libcli/smb/tstream_smbXcli_np.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan Metzmacher 2010
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #ifndef _CLI_NP_TSTREAM_H_
  21 #define _CLI_NP_TSTREAM_H_
  22
  23 struct tevent_context;
  24 struct tevent_req;
  25 struct tstream_context;
  26 struct smbXcli_conn;
  27 struct smbXcli_session;
  28 struct smbXcli_tcon;
  29
  30 struct tevent_req *tstream_smbXcli_np_open_send(TALLOC_CTX *mem_ctx,
  31                                                 struct tevent_context *ev,
  32                                                 struct smbXcli_conn *conn,
  33                                                 struct smbXcli_session *session,
  34                                                 struct smbXcli_tcon *tcon,
  35                                                 uint16_t pid,
  36                                                 unsigned int timeout,
  37                                                 const char *npipe);
  38 NTSTATUS _tstream_smbXcli_np_open_recv(struct tevent_req *req,
  39                                        TALLOC_CTX *mem_ctx,
  40                                        struct tstream_context **_stream,
  41                                        const char *location);
  42 #define tstream_smbXcli_np_open_recv(req, mem_ctx, stream) \
  43                 _tstream_smbXcli_np_open_recv(req, mem_ctx, stream, __location__)
  44
  45 bool tstream_is_smbXcli_np(struct tstream_context *stream);
  46
  47 NTSTATUS tstream_smbXcli_np_use_trans(struct tstream_context *stream);
  48
  49 unsigned int tstream_smbXcli_np_set_timeout(struct tstream_context *stream,
  50                                             unsigned int timeout);
  51
  52 /*
  53  * Windows uses 4280 (the max xmit/recv size negotiated on DCERPC).
  54  * This is fits into the max_xmit negotiated at the SMB layer.
  55  *
  56  * On the sending side they may use SMBtranss if the request does not
  57  * fit into a single SMBtrans call.
  58  *
  59  * Windows uses 1024 as max data size of a SMBtrans request and then
  60  * possibly reads the rest of the DCERPC fragment (up to 3256 bytes)
  61  * via a SMBreadX.
  62  *
  63  * For now we just ask for the full 4280 bytes (max data size) in the SMBtrans
  64  * request to get the whole fragment at once (like samba 3.5.x and below did.
  65  *
  66  * It is important that we use do SMBwriteX with the size of a full fragment,
  67  * otherwise we may get NT_STATUS_PIPE_BUSY on the SMBtrans request
  68  * from NT4 servers. (See bug #8195)
  69  */
  70 #define TSTREAM_SMBXCLI_NP_MAX_BUF_SIZE 4280
  71
  72 #endif /*  _CLI_NP_TSTREAM_H_ */