source/libsmb/clioplock.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    SMB client oplock functions
   5    Copyright (C) Andrew Tridgell 2001
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #define NO_SYSLOG
  23
  24 #include "includes.h"
  25 extern int DEBUGLEVEL;
  26
  27
  28 /****************************************************************************
  29 send an ack for an oplock break request
  30 ****************************************************************************/
  31 BOOL cli_oplock_ack(struct cli_state *cli, int fnum, unsigned char level)
  32 {
  33         char *oldbuf = cli->outbuf;
  34         pstring buf;
  35         BOOL ret;
  36
  37         cli->outbuf = buf;
  38
  39         memset(buf,'\0',smb_size);
  40         set_message(buf,8,0,True);
  41
  42         CVAL(buf,smb_com) = SMBlockingX;
  43         SSVAL(buf,smb_tid, cli->cnum);
  44         cli_setup_packet(cli);
  45         SSVAL(buf,smb_vwv0,0xFF);
  46         SSVAL(buf,smb_vwv1,0);
  47         SSVAL(buf,smb_vwv2,fnum);
  48         if (level == 1)
  49                 SSVAL(buf,smb_vwv3,0x102); /* levelII oplock break ack */
  50         else
  51                 SSVAL(buf,smb_vwv3,2); /* exclusive oplock break ack */
  52         SIVAL(buf,smb_vwv4,0); /* timoeut */
  53         SSVAL(buf,smb_vwv6,0); /* unlockcount */
  54         SSVAL(buf,smb_vwv7,0); /* lockcount */
  55
  56         ret = cli_send_smb(cli);
  57
  58         cli->outbuf = oldbuf;
  59
  60         return ret;
  61 }
  62
  63
  64 /****************************************************************************
  65 set the oplock handler for a connection
  66 ****************************************************************************/
  67 void cli_oplock_handler(struct cli_state *cli,
  68                         BOOL (*handler)(struct cli_state *, int, unsigned char))
  69 {
  70         cli->oplock_handler = handler;
  71 }
  72