source4/libcli/raw/clioplock.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    SMB client oplock functions
   4    Copyright (C) Andrew Tridgell 2001
   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 #include "includes.h"
  21 #include "libcli/raw/libcliraw.h"
  22 #include "libcli/raw/raw_proto.h"
  23
  24 /****************************************************************************
  25 send an ack for an oplock break request
  26 ****************************************************************************/
  27 _PUBLIC_ bool smbcli_oplock_ack(struct smbcli_tree *tree, uint16_t fnum, uint16_t ack_level)
  28 {
  29         bool ret;
  30         struct smbcli_request *req;
  31
  32         req = smbcli_request_setup(tree, SMBlockingX, 8, 0);
  33         if (req == NULL) {
  34                 return false;
  35         }
  36
  37         SSVAL(req->out.vwv,VWV(0),0xFF);
  38         SSVAL(req->out.vwv,VWV(1),0);
  39         SSVAL(req->out.vwv,VWV(2),fnum);
  40         SCVAL(req->out.vwv,VWV(3),LOCKING_ANDX_OPLOCK_RELEASE);
  41         SCVAL(req->out.vwv,VWV(3)+1,ack_level);
  42         SIVAL(req->out.vwv,VWV(4),0);
  43         SSVAL(req->out.vwv,VWV(6),0);
  44         SSVAL(req->out.vwv,VWV(7),0);
  45
  46         /*
  47          * The low level code knows it is a
  48          * one way request by looking at SMBlockingX,
  49          * wct == 8 and LOCKING_ANDX_OPLOCK_RELEASE
  50          */
  51         ret = smbcli_request_send(req);
  52
  53         return ret;
  54 }
  55
  56
  57 /****************************************************************************
  58 set the oplock handler for a connection
  59 ****************************************************************************/
  60 _PUBLIC_ void smbcli_oplock_handler(struct smbcli_transport *transport,
  61                         bool (*handler)(struct smbcli_transport *, uint16_t, uint16_t, uint8_t, void *),
  62                         void *private_data)
  63 {
  64         transport->oplock.handler = handler;
  65         transport->oplock.private_data = private_data;
  66 }