samba-mirror/source4/libcli/raw/clioplock.c

/* 
   Unix SMB/CIFS implementation.
   SMB client oplock functions
   Copyright (C) Andrew Tridgell 2001
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"

/****************************************************************************
send an ack for an oplock break request
****************************************************************************/
_PUBLIC_ bool smbcli_oplock_ack(struct smbcli_tree *tree, uint16_t fnum, uint16_t ack_level)
{
	bool ret;
	struct smbcli_request *req;

	req = smbcli_request_setup(tree, SMBlockingX, 8, 0);
	if (req == NULL) {
		return false;
	}

	SSVAL(req->out.vwv,VWV(0),0xFF);
	SSVAL(req->out.vwv,VWV(1),0);
	SSVAL(req->out.vwv,VWV(2),fnum);
	SCVAL(req->out.vwv,VWV(3),LOCKING_ANDX_OPLOCK_RELEASE);
	SCVAL(req->out.vwv,VWV(3)+1,ack_level);
	SIVAL(req->out.vwv,VWV(4),0);
	SSVAL(req->out.vwv,VWV(6),0);
	SSVAL(req->out.vwv,VWV(7),0);

	/*
	 * The low level code knows it is a
	 * one way request by looking at SMBlockingX,
	 * wct == 8 and LOCKING_ANDX_OPLOCK_RELEASE
	 */
	ret = smbcli_request_send(req);

	return ret;
}


/****************************************************************************
set the oplock handler for a connection
****************************************************************************/
_PUBLIC_ void smbcli_oplock_handler(struct smbcli_transport *transport, 
			bool (*handler)(struct smbcli_transport *, uint16_t, uint16_t, uint8_t, void *),
			void *private_data)
{
	transport->oplock.handler = handler;
	transport->oplock.private_data = private_data;
}