source3/smbd/smb1_oplock.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    oplock processing
   4    Copyright (C) Andrew Tridgell 1992-1998
   5    Copyright (C) Jeremy Allison 1998 - 2001
   6    Copyright (C) Volker Lendecke 2005
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "lib/util/server_id.h"
  24 #include "locking/share_mode_lock.h"
  25 #include "smbd/smbd.h"
  26 #include "smbd/globals.h"
  27 #include "messages.h"
  28 #include "locking/leases_db.h"
  29 #include "../librpc/gen_ndr/ndr_open_files.h"
  30
  31 /****************************************************************************
  32  Set up an oplock break message.
  33 ****************************************************************************/
  34
  35 void new_break_message_smb1(files_struct *fsp, int cmd,
  36                             char result[SMB1_BREAK_MESSAGE_LENGTH])
  37 {
  38         memset(result,'\0',smb_size);
  39         srv_smb1_set_message(result,8,0,true);
  40         SCVAL(result,smb_com,SMBlockingX);
  41         SSVAL(result,smb_tid,fsp->conn->cnum);
  42         SSVAL(result,smb_pid,0xFFFF);
  43         SSVAL(result,smb_uid,0);
  44         SSVAL(result,smb_mid,0xFFFF);
  45         SCVAL(result,smb_vwv0,0xFF);
  46         SSVAL(result,smb_vwv2,fsp->fnum);
  47         SCVAL(result,smb_vwv3,LOCKING_ANDX_OPLOCK_RELEASE);
  48         SCVAL(result,smb_vwv3+1,cmd);
  49 }
  50
  51 void send_break_message_smb1(files_struct *fsp, int level)
  52 {
  53         struct smbXsrv_connection *xconn = NULL;
  54         char break_msg[SMB1_BREAK_MESSAGE_LENGTH];
  55
  56         /*
  57          * For SMB1 we only have one connection
  58          */
  59         xconn = fsp->conn->sconn->client->connections;
  60
  61         new_break_message_smb1(fsp, level, break_msg);
  62
  63         show_msg(break_msg);
  64         if (!smb1_srv_send(xconn,
  65                         break_msg, false, 0,
  66                         IS_CONN_ENCRYPTED(fsp->conn),
  67                         NULL)) {
  68                 exit_server_cleanly("send_break_message_smb1: "
  69                         "smb1_srv_send failed.");
  70         }
  71 }