samba-mirror/source4/smb_server/reply.c

/* 
   Unix SMB/CIFS implementation.
   Main SMB reply routines
   Copyright (C) Andrew Tridgell 1992-2003
   Copyright (C) James J Myers 2003 <myersjj@samba.org>

   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
   This file handles most of the reply_ calls that the server
   makes to handle specific protocols
*/

#include "includes.h"

/* useful way of catching wct errors with file and line number */
#define REQ_CHECK_WCT(req, wcount) do { \
	if ((req)->in.wct != (wcount)) { \
		DEBUG(1,("Unexpected WCT %d at %s(%d) - expected %d\n", \
			 (req)->in.wct, __FILE__, __LINE__, wcount)); \
		req_reply_dos_error(req, ERRSRV, ERRerror); \
		return; \
	}} while (0)

/* check req->async.status and if not OK then send an error reply */
#define CHECK_ASYNC_STATUS do { \
	if (!NT_STATUS_IS_OK(req->async.status)) { \
		req_reply_error(req, req->async.status); \
		return; \
	}} while (0)
	
/* useful wrapper for talloc with NO_MEMORY reply */
#define REQ_TALLOC(ptr, size) do { \
	ptr = talloc(req->mem_ctx, size); \
	if (!ptr) { \
		req_reply_error(req, NT_STATUS_NO_MEMORY); \
		return; \
	}} while (0)

/* 
   check if the backend wants to handle the request asynchronously.
   if it wants it handled synchronously then call the send function
   immediately
*/
#define REQ_ASYNC_TAIL do { \
	if (!(req->control_flags & REQ_CONTROL_ASYNC)) { \
		req->async.send_fn(req); \
	}} while (0)

/* zero out some reserved fields in a reply */
#define REQ_VWV_RESERVED(start, count) memset(req->out.vwv + VWV(start), 0, (count)*2)

/****************************************************************************
 Reply to a simple request (async send)
****************************************************************************/
static void reply_simple_send(struct request_context *req)
{
	CHECK_ASYNC_STATUS;

	req_setup_reply(req, 0, 0);
	req_send_reply(req);
}


/****************************************************************************
 Reply to a tcon.
****************************************************************************/
void reply_tcon(struct request_context *req)
{
	union smb_tcon con;
	NTSTATUS status;
	char *p;
	
	/* parse request */
	REQ_CHECK_WCT(req, 0);

	con.tcon.level = RAW_TCON_TCON;

	p = req->in.data;	
	p += req_pull_ascii4(req, &con.tcon.in.service, p, STR_TERMINATE);
	p += req_pull_ascii4(req, &con.tcon.in.password, p, STR_TERMINATE);
	p += req_pull_ascii4(req, &con.tcon.in.dev, p, STR_TERMINATE);

	if (!con.tcon.in.service || !con.tcon.in.password || !con.tcon.in.dev) {
		req_reply_error(req, NT_STATUS_INVALID_PARAMETER);
		return;
	}

	/* call backend */
	status = tcon_backend(req, &con);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 2, 0);

	SSVAL(req->out.vwv, VWV(0), con.tcon.out.max_xmit);
	SSVAL(req->out.vwv, VWV(1), con.tcon.out.cnum);
	SSVAL(req->out.hdr, HDR_TID, req->conn->cnum);
  
	req_send_reply(req);
}


/****************************************************************************
 Reply to a tcon and X.
****************************************************************************/
void reply_tcon_and_X(struct request_context *req)
{
	NTSTATUS status;
	union smb_tcon con;
	char *p;
	uint16 passlen;

	con.tconx.level = RAW_TCON_TCONX;

	/* parse request */
	REQ_CHECK_WCT(req, 4);

	con.tconx.in.flags  = SVAL(req->in.vwv, VWV(2));
	passlen             = SVAL(req->in.vwv, VWV(3));

	p = req->in.data;

	if (!req_pull_blob(req, p, passlen, &con.tconx.in.password)) {
		req_reply_error(req, NT_STATUS_ILL_FORMED_PASSWORD);
		return;
	}
	p += passlen;

	p += req_pull_string(req, &con.tconx.in.path, p, -1, STR_TERMINATE);
	p += req_pull_string(req, &con.tconx.in.device, p, -1, STR_ASCII);

	if (!con.tconx.in.path || !con.tconx.in.device) {
		req_reply_error(req, NT_STATUS_BAD_DEVICE_TYPE);
		return;
	}

	/* call backend */
	status = tcon_backend(req, &con);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply - two varients */
	if (req->smb->negotiate.protocol < PROTOCOL_NT1) {
		req_setup_reply(req, 2, 0);

		SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
		SSVAL(req->out.vwv, VWV(1), 0);

		req_push_str(req, NULL, con.tconx.out.dev_type, -1, STR_TERMINATE|STR_ASCII);
	} else {
		req_setup_reply(req, 3, 0);

		SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
		SSVAL(req->out.vwv, VWV(1), 0);
		SSVAL(req->out.vwv, VWV(2), con.tconx.out.options);

		req_push_str(req, NULL, con.tconx.out.dev_type, -1, STR_TERMINATE|STR_ASCII);
		req_push_str(req, NULL, con.tconx.out.fs_type, -1, STR_TERMINATE);
	}

	/* set the incoming and outgoing tid to the just created one */
	SSVAL(req->in.hdr, HDR_TID, con.tconx.out.cnum);
	SSVAL(req->out.hdr,HDR_TID, con.tconx.out.cnum);

	chain_reply(req);
}


/****************************************************************************
 Reply to an unknown request
****************************************************************************/
void reply_unknown(struct request_context *req)
{
	int type;

	type = CVAL(req->in.hdr, HDR_COM);
  
	DEBUG(0,("unknown command type %d (0x%X)\n", type, type));

	req_reply_dos_error(req, ERRSRV, ERRunknownsmb);
}


/****************************************************************************
 Reply to an ioctl (async reply)
****************************************************************************/
static void reply_ioctl_send(struct request_context *req)
{
	union smb_ioctl *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* the +1 is for nicer alignment */
	req_setup_reply(req, 8, io->ioctl.out.blob.length+1);
	SSVAL(req->out.vwv, VWV(1), io->ioctl.out.blob.length);
	SSVAL(req->out.vwv, VWV(5), io->ioctl.out.blob.length);
	SSVAL(req->out.vwv, VWV(6), PTR_DIFF(req->out.data, req->out.hdr) + 1);

	memcpy(req->out.data+1, io->ioctl.out.blob.data, io->ioctl.out.blob.length);

	req_send_reply(req);
}

/****************************************************************************
 Reply to an ioctl.
****************************************************************************/
void reply_ioctl(struct request_context *req)
{
	union smb_ioctl *io;

	/* parse request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(io, sizeof(*io));

	io->ioctl.level = RAW_IOCTL_IOCTL;
	io->ioctl.in.fnum     = req_fnum(req, req->in.vwv, VWV(0));
	io->ioctl.in.request  = IVAL(req->in.vwv, VWV(1));

	req->async.send_fn = reply_ioctl_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->ioctl(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a chkpth.
****************************************************************************/
void reply_chkpth(struct request_context *req)
{
	struct smb_chkpath *io;

	REQ_TALLOC(io, sizeof(*io));

	req_pull_ascii4(req, &io->in.path, req->in.data, STR_TERMINATE);

	req->async.send_fn = reply_simple_send;

	req->async.status = req->conn->ntvfs_ops->chkpath(req, io);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a getatr (async reply)
****************************************************************************/
static void reply_getatr_send(struct request_context *req)
{
	union smb_fileinfo *st = req->async.private;

	CHECK_ASYNC_STATUS;
	
	/* construct reply */
	req_setup_reply(req, 10, 0);

	SSVAL(req->out.vwv,         VWV(0), st->getattr.out.attrib);
	srv_push_dos_date3(req->smb, req->out.vwv, VWV(1), st->getattr.out.write_time);
	SIVAL(req->out.vwv,         VWV(3), st->getattr.out.size);

	REQ_VWV_RESERVED(5, 5);

	req_send_reply(req);
}


/****************************************************************************
 Reply to a getatr.
****************************************************************************/
void reply_getatr(struct request_context *req)
{
	union smb_fileinfo *st;

	REQ_TALLOC(st, sizeof(*st));
	
	st->getattr.level = RAW_FILEINFO_GETATTR;

	/* parse request */
	req_pull_ascii4(req, &st->getattr.in.fname, req->in.data, STR_TERMINATE);
	if (!st->getattr.in.fname) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}

	req->async.send_fn = reply_getatr_send;
	req->async.private = st;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->qpathinfo(req, st);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a setatr.
****************************************************************************/
void reply_setatr(struct request_context *req)
{
	union smb_setfileinfo *st;

	/* parse request */
	REQ_CHECK_WCT(req, 8);
	REQ_TALLOC(st, sizeof(*st));

	st->setattr.level = RAW_SFILEINFO_SETATTR;
	st->setattr.in.attrib     = SVAL(req->in.vwv, VWV(0));
	st->setattr.in.write_time = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(1));
	
	req_pull_ascii4(req, &st->setattr.file.fname, req->in.data, STR_TERMINATE);

	if (!st->setattr.file.fname) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}
	
	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->setpathinfo(req, st);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a dskattr (async reply)
****************************************************************************/
static void reply_dskattr_send(struct request_context *req)
{
	union smb_fsinfo *fs = req->async.private;

	CHECK_ASYNC_STATUS;
	
	/* construct reply */
	req_setup_reply(req, 5, 0);

	SSVAL(req->out.vwv, VWV(0), fs->dskattr.out.units_total);
	SSVAL(req->out.vwv, VWV(1), fs->dskattr.out.blocks_per_unit);
	SSVAL(req->out.vwv, VWV(2), fs->dskattr.out.block_size);
	SSVAL(req->out.vwv, VWV(3), fs->dskattr.out.units_free);

	REQ_VWV_RESERVED(4, 1);

	req_send_reply(req);
}


/****************************************************************************
 Reply to a dskattr.
****************************************************************************/
void reply_dskattr(struct request_context *req)
{
	union smb_fsinfo *fs;

	REQ_TALLOC(fs, sizeof(*fs));
	
	fs->dskattr.level = RAW_QFS_DSKATTR;

	req->async.send_fn = reply_dskattr_send;
	req->async.private = fs;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->fsinfo(req, fs);

	REQ_ASYNC_TAIL;
}



/****************************************************************************
 Reply to an open (async reply)
****************************************************************************/
static void reply_open_send(struct request_context *req)
{
	union smb_open *oi = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 7, 0);

	SSVAL(req->out.vwv, VWV(0), oi->open.out.fnum);
	SSVAL(req->out.vwv, VWV(1), oi->open.out.attrib);
	srv_push_dos_date3(req->smb, req->out.vwv, VWV(2), oi->open.out.write_time);
	SIVAL(req->out.vwv, VWV(4), oi->open.out.size);
	SSVAL(req->out.vwv, VWV(6), oi->open.out.rmode);

	req_send_reply(req);
}

/****************************************************************************
 Reply to an open.
****************************************************************************/
void reply_open(struct request_context *req)
{
	union smb_open *oi;

	/* parse request */
	REQ_CHECK_WCT(req, 2);
	REQ_TALLOC(oi, sizeof(*oi));

	oi->open.level = RAW_OPEN_OPEN;
	oi->open.in.flags = SVAL(req->in.vwv, VWV(0));
	oi->open.in.search_attrs = SVAL(req->in.vwv, VWV(1));

	req_pull_ascii4(req, &oi->open.in.fname, req->in.data, STR_TERMINATE);

	if (!oi->open.in.fname) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}

	req->async.send_fn = reply_open_send;
	req->async.private = oi;
	
	/* call backend */
	req->async.status = req->conn->ntvfs_ops->open(req, oi);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to an open and X (async reply)
****************************************************************************/
static void reply_open_and_X_send(struct request_context *req)
{
	union smb_open *oi = req->async.private;

	CHECK_ASYNC_STATUS;

	/* build the reply */
	if (oi->openx.in.flags & OPENX_FLAGS_EXTENDED_RETURN) {
		req_setup_reply(req, 19, 0);
	} else {
		req_setup_reply(req, 15, 0);
	}

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), oi->openx.out.fnum);
	SSVAL(req->out.vwv, VWV(3), oi->openx.out.attrib);
	srv_push_dos_date3(req->smb, req->out.vwv, VWV(4), oi->openx.out.write_time);
	SIVAL(req->out.vwv, VWV(6), oi->openx.out.size);
	SSVAL(req->out.vwv, VWV(8), oi->openx.out.access);
	SSVAL(req->out.vwv, VWV(9), oi->openx.out.ftype);
	SSVAL(req->out.vwv, VWV(10),oi->openx.out.devstate);
	SSVAL(req->out.vwv, VWV(11),oi->openx.out.action);
	SIVAL(req->out.vwv, VWV(12),oi->openx.out.unique_fid);
	SSVAL(req->out.vwv, VWV(14),0); /* reserved */
	if (oi->openx.in.flags & OPENX_FLAGS_EXTENDED_RETURN) {
		SIVAL(req->out.vwv, VWV(15),oi->openx.out.access_mask);
		REQ_VWV_RESERVED(17, 2);
	}

	chain_reply(req);
}


/****************************************************************************
 Reply to an open and X.
****************************************************************************/
void reply_open_and_X(struct request_context *req)
{
	union smb_open *oi;

	/* parse the request */
	REQ_CHECK_WCT(req, 15);
	REQ_TALLOC(oi, sizeof(*oi));

	oi->openx.level = RAW_OPEN_OPENX;
	oi->openx.in.flags        = SVAL(req->in.vwv, VWV(2));
	oi->openx.in.open_mode    = SVAL(req->in.vwv, VWV(3));
	oi->openx.in.search_attrs = SVAL(req->in.vwv, VWV(4));
	oi->openx.in.file_attrs   = SVAL(req->in.vwv, VWV(5));
	oi->openx.in.write_time   = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(6));
	oi->openx.in.open_func    = SVAL(req->in.vwv, VWV(8));
	oi->openx.in.size         = IVAL(req->in.vwv, VWV(9));
	oi->openx.in.timeout      = IVAL(req->in.vwv, VWV(11));

	req_pull_ascii4(req, &oi->openx.in.fname, req->in.data, STR_TERMINATE);

	if (!oi->openx.in.fname) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}

	req->async.send_fn = reply_open_and_X_send;
	req->async.private = oi;

	/* call the backend */
	req->async.status = req->conn->ntvfs_ops->open(req, oi);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a mknew or a create.
****************************************************************************/
static void reply_mknew_send(struct request_context *req)
{
	union smb_open *oi = req->async.private;

	CHECK_ASYNC_STATUS;

	/* build the reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), oi->mknew.out.fnum);

	req_send_reply(req);
}


/****************************************************************************
 Reply to a mknew or a create.
****************************************************************************/
void reply_mknew(struct request_context *req)
{
	union smb_open *oi;

	/* parse the request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(oi, sizeof(*oi));

	oi->mknew.level = RAW_OPEN_MKNEW;
	oi->mknew.in.attrib  = SVAL(req->in.vwv, VWV(0));
	oi->mknew.in.write_time  = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(1));

	req_pull_ascii4(req, &oi->mknew.in.fname, req->in.data, STR_TERMINATE);

	if (!oi->mknew.in.fname) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}

	req->async.send_fn = reply_mknew_send;
	req->async.private = oi;

	/* call the backend */
	req->async.status = req->conn->ntvfs_ops->open(req, oi);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a create temporary file (async reply)
****************************************************************************/
static void reply_ctemp_send(struct request_context *req)
{
	union smb_open *oi = req->async.private;

	CHECK_ASYNC_STATUS;

	/* build the reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), oi->ctemp.out.fnum);

	/* the returned filename is relative to the directory */
	req_push_str(req, NULL, oi->ctemp.out.name, -1, STR_TERMINATE);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a create temporary file.
****************************************************************************/
void reply_ctemp(struct request_context *req)
{
	union smb_open *oi;

	/* parse the request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(oi, sizeof(*oi));

	oi->ctemp.level = RAW_OPEN_CTEMP;
	oi->ctemp.in.attrib = SVAL(req->in.vwv, VWV(0));
	oi->ctemp.in.write_time = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(1));

	/* the filename is actually a directory name, the server provides a filename
	   in that directory */
	req_pull_ascii4(req, &oi->ctemp.in.directory, req->in.data, STR_TERMINATE);

	if (!oi->ctemp.in.directory) {
		req_reply_error(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
		return;
	}

	req->async.send_fn = reply_ctemp_send;
	req->async.private = oi;

	/* call the backend */
	req->async.status = req->conn->ntvfs_ops->open(req, oi);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a unlink
****************************************************************************/
void reply_unlink(struct request_context *req)
{
	struct smb_unlink *unl;

	/* parse the request */
	REQ_CHECK_WCT(req, 1);
	REQ_TALLOC(unl, sizeof(*unl));
	
	unl->in.attrib = SVAL(req->in.vwv, VWV(0));

	req_pull_ascii4(req, &unl->in.pattern, req->in.data, STR_TERMINATE);
	
	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->unlink(req, unl);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a readbraw (core+ protocol).
 this is a strange packet because it doesn't use a standard SMB header in the reply,
 only the 4 byte NBT header
 This command must be replied to synchronously
****************************************************************************/
void reply_readbraw(struct request_context *req)
{
	NTSTATUS status;
	union smb_read io;

	io.readbraw.level = RAW_READ_READBRAW;

	/* there are two varients, one with 10 and one with 8 command words */
	if (req->in.wct != 10) {
		REQ_CHECK_WCT(req, 8);
	}

	io.readbraw.in.fnum    = req_fnum(req, req->in.vwv, VWV(0));
	io.readbraw.in.offset  = IVAL(req->in.vwv, VWV(1));
	io.readbraw.in.mincnt  = SVAL(req->in.vwv, VWV(3));
	io.readbraw.in.maxcnt  = SVAL(req->in.vwv, VWV(4));
	io.readbraw.in.timeout = IVAL(req->in.vwv, VWV(5));

	/* the 64 bit varient */
	if (req->in.wct == 10) {
		uint32 offset_high = IVAL(req->in.vwv, VWV(8));
#ifdef LARGE_SMB_OFF_T
		io.readbraw.in.offset |= (((SMB_OFF_T)offset_high) << 32);
#else
		if (offset_high != 0) {
			goto failed;
		}
#endif
	}

	/* before calling the backend we setup the raw buffer. This
	 * saves a copy later */
	req->out.size = io.readbraw.in.maxcnt + NBT_HDR_SIZE;
	req->out.buffer = talloc(req->mem_ctx, req->out.size);
	if (req->out.buffer == NULL) {
		goto failed;
	}
	SIVAL(req->out.buffer, 0, 0); /* init NBT header */

	/* tell the backend where to put the data */
	io.readbraw.out.data = req->out.buffer + NBT_HDR_SIZE;

	/* call the backend */
	status = req->conn->ntvfs_ops->read(req, &io);

	if (!NT_STATUS_IS_OK(status)) {
		goto failed;
	}

	req->out.size = io.readbraw.out.nread + NBT_HDR_SIZE;

	req_send_reply(req);
	return;

failed:
	/* any failure in readbraw is equivalent to reading zero bytes */
	req->out.size = 4;
	req->out.buffer = talloc(req->mem_ctx, req->out.size);
	SIVAL(req->out.buffer, 0, 0); /* init NBT header */
	req_send_reply(req);
}


/****************************************************************************
 Reply to a lockread (async reply)
****************************************************************************/
static void reply_lockread_send(struct request_context *req)
{
	union smb_read *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* trim packet */
	io->lockread.out.nread = MIN(io->lockread.out.nread,
		req_max_data(req) - 3);
	req_grow_data(req, 3 + io->lockread.out.nread);

	/* construct reply */
	SSVAL(req->out.vwv, VWV(0), io->lockread.out.nread);
	REQ_VWV_RESERVED(1, 4);

	SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
	SSVAL(req->out.data, 1, io->lockread.out.nread);

	req_send_reply(req);
}


/****************************************************************************
 Reply to a lockread (core+ protocol).
 note that the lock is a write lock, not a read lock!
****************************************************************************/
void reply_lockread(struct request_context *req)
{
	union smb_read *io;
	
	/* parse request */
	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(io, sizeof(*io));

	io->lockread.level = RAW_READ_LOCKREAD;
	io->lockread.in.fnum      = req_fnum(req, req->in.vwv, VWV(0));
	io->lockread.in.count     = SVAL(req->in.vwv, VWV(1));
	io->lockread.in.offset    = IVAL(req->in.vwv, VWV(2));
	io->lockread.in.remaining = SVAL(req->in.vwv, VWV(4));
	
	/* setup the reply packet assuming the maximum possible read */
	req_setup_reply(req, 5, 3 + io->lockread.in.count);

	/* tell the backend where to put the data */
	io->lockread.out.data = req->out.data + 3;

	req->async.send_fn = reply_lockread_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->read(req, io);

	REQ_ASYNC_TAIL;
}



/****************************************************************************
 Reply to a read (async reply)
****************************************************************************/
static void reply_read_send(struct request_context *req)
{
	union smb_read *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* trim packet */
	io->read.out.nread = MIN(io->read.out.nread,
		req_max_data(req) - 3);
	req_grow_data(req, 3 + io->read.out.nread);

	/* construct reply */
	SSVAL(req->out.vwv, VWV(0), io->read.out.nread);
	REQ_VWV_RESERVED(1, 4);

	SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
	SSVAL(req->out.data, 1, io->read.out.nread);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a read.
****************************************************************************/
void reply_read(struct request_context *req)
{
	union smb_read *io;

	/* parse request */
	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(io, sizeof(*io));
	
	io->read.level = RAW_READ_READ;
	io->read.in.fnum          = req_fnum(req, req->in.vwv, VWV(0));
	io->read.in.count         = SVAL(req->in.vwv, VWV(1));
	io->read.in.offset        = IVAL(req->in.vwv, VWV(2));
	io->read.in.remaining     = SVAL(req->in.vwv, VWV(4));
	
	/* setup the reply packet assuming the maximum possible read */
	req_setup_reply(req, 5, 3 + io->read.in.count);

	/* tell the backend where to put the data */
	io->read.out.data = req->out.data + 3;

	req->async.send_fn = reply_read_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->read(req, io);

	REQ_ASYNC_TAIL;
}



/****************************************************************************
 Reply to a read and X (async reply)
****************************************************************************/
static void reply_read_and_X_send(struct request_context *req)
{
	union smb_read *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* readx reply packets can be over-sized */
	req->control_flags |= REQ_CONTROL_LARGE;
	req_grow_data(req, 1 + io->readx.out.nread);

	/* construct reply */
	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), io->readx.out.remaining);
	SSVAL(req->out.vwv, VWV(3), io->readx.out.compaction_mode);
	REQ_VWV_RESERVED(4, 1);
	SSVAL(req->out.vwv, VWV(5), io->readx.out.nread);
	SSVAL(req->out.vwv, VWV(6), PTR_DIFF(io->readx.out.data, req->out.hdr));
	SCVAL(req->out.data, 0, 0); /* padding */
	REQ_VWV_RESERVED(7, 5);

	chain_reply(req);
}

/****************************************************************************
 Reply to a read and X.
****************************************************************************/
void reply_read_and_X(struct request_context *req)
{
	union smb_read *io;

	/* parse request */
	if (req->in.wct != 12) {
		REQ_CHECK_WCT(req, 10);
	}

	REQ_TALLOC(io, sizeof(*io));

	io->readx.level = RAW_READ_READX;
	io->readx.in.fnum          = req_fnum(req, req->in.vwv, VWV(2));
	io->readx.in.offset        = IVAL(req->in.vwv, VWV(3));
	io->readx.in.maxcnt        = SVAL(req->in.vwv, VWV(5));
	io->readx.in.mincnt        = SVAL(req->in.vwv, VWV(6));
	io->readx.in.remaining     = SVAL(req->in.vwv, VWV(9));
	
	/* the 64 bit varient */
	if (req->in.wct == 12) {
		uint32 offset_high = IVAL(req->in.vwv, VWV(10));
#ifdef LARGE_SMB_OFF_T
		io->readx.in.offset |= (((SMB_OFF_T)offset_high) << 32);
#else
		if (offset_high != 0) {
			req_reply_error(req, NT_STATUS_FOOBAR);
			return;
		}
#endif
	}

	/* setup the reply packet assuming the maximum possible read */
	req_setup_reply(req, 12, 1 + io->readx.in.maxcnt);

	/* tell the backend where to put the data. Notice the pad byte. */
	io->readx.out.data = req->out.data + 1;

	req->async.send_fn = reply_read_and_X_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->read(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a writebraw (core+ or LANMAN1.0 protocol).
****************************************************************************/
void reply_writebraw(struct request_context *req)
{
	/* this one is damn complex - put it off for now */
	req_reply_error(req, NT_STATUS_FOOBAR);
}


/****************************************************************************
 Reply to a writeunlock (async reply)
****************************************************************************/
static void reply_writeunlock_send(struct request_context *req)
{
	union smb_write *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), io->writeunlock.out.nwritten);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a writeunlock (core+).
****************************************************************************/
void reply_writeunlock(struct request_context *req)
{
	union smb_write *io;

	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(io, sizeof(*io));

	io->writeunlock.level = RAW_WRITE_WRITEUNLOCK;
	io->writeunlock.in.fnum        = req_fnum(req, req->in.vwv, VWV(0));
	io->writeunlock.in.count       = SVAL(req->in.vwv, VWV(1));
	io->writeunlock.in.offset      = IVAL(req->in.vwv, VWV(2));
	io->writeunlock.in.remaining   = SVAL(req->in.vwv, VWV(4));
	io->writeunlock.in.data        = req->in.data + 3;

	/* make sure they gave us the data they promised */
	if (io->writeunlock.in.count+3 > req->in.data_size) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	/* make sure the data block is big enough */
	if (SVAL(req->in.data, 1) < io->writeunlock.in.count) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_writeunlock_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->write(req, io);

	REQ_ASYNC_TAIL;
}



/****************************************************************************
 Reply to a write (async reply)
****************************************************************************/
static void reply_write_send(struct request_context *req)
{
	union smb_write *io = req->async.private;
	
	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), io->write.out.nwritten);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a write
****************************************************************************/
void reply_write(struct request_context *req)
{
	union smb_write *io;

	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(io, sizeof(*io));

	io->write.level = RAW_WRITE_WRITE;
	io->write.in.fnum        = req_fnum(req, req->in.vwv, VWV(0));
	io->write.in.count       = SVAL(req->in.vwv, VWV(1));
	io->write.in.offset      = IVAL(req->in.vwv, VWV(2));
	io->write.in.remaining   = SVAL(req->in.vwv, VWV(4));
	io->write.in.data        = req->in.data + 3;

	/* make sure they gave us the data they promised */
	if (req_data_oob(req, io->write.in.data, io->write.in.count)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	/* make sure the data block is big enough */
	if (SVAL(req->in.data, 1) < io->write.in.count) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_write_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->write(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a write and X (async reply)
****************************************************************************/
static void reply_write_and_X_send(struct request_context *req)
{
	union smb_write *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 6, 0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), io->writex.out.nwritten & 0xFFFF);
	SSVAL(req->out.vwv, VWV(3), io->writex.out.remaining);
	SSVAL(req->out.vwv, VWV(4), io->writex.out.nwritten >> 16);
	REQ_VWV_RESERVED(5, 1);

	chain_reply(req);
}

/****************************************************************************
 Reply to a write and X.
****************************************************************************/
void reply_write_and_X(struct request_context *req)
{
	union smb_write *io;
	
	if (req->in.wct != 14) {
		REQ_CHECK_WCT(req, 12);
	}

	REQ_TALLOC(io, sizeof(*io));

	io->writex.level = RAW_WRITE_WRITEX;
	io->writex.in.fnum      = req_fnum(req, req->in.vwv, VWV(2));
	io->writex.in.offset    = IVAL(req->in.vwv, VWV(3));
	io->writex.in.wmode     = SVAL(req->in.vwv, VWV(7));
	io->writex.in.remaining = SVAL(req->in.vwv, VWV(8));
	io->writex.in.count     = SVAL(req->in.vwv, VWV(10));
	io->writex.in.data      = req->in.hdr + SVAL(req->in.vwv, VWV(11));

	if (req->in.wct == 14) {
		uint32 offset_high = IVAL(req->in.vwv, VWV(12));
		uint16 count_high = SVAL(req->in.vwv, VWV(9));
#ifdef LARGE_SMB_OFF_T
		io->writex.in.offset |= (((SMB_OFF_T)offset_high) << 32);
#else
		if (offset_high != 0) {
			req_reply_error(req, NT_STATUS_FOOBAR);
			return;
		}
#endif
		io->writex.in.count |= ((uint32)count_high) << 16;
	}

	/* make sure the data is in bounds */
	if (req_data_oob(req, io->writex.in.data, io->writex.in.count)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	} 

	req->async.send_fn = reply_write_and_X_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->write(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a lseek (async reply)
****************************************************************************/
static void reply_lseek_send(struct request_context *req)
{
	struct smb_seek *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 2, 0);

	SIVALS(req->out.vwv, VWV(0), io->out.offset);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a lseek.
****************************************************************************/
void reply_lseek(struct request_context *req)
{
	struct smb_seek *io;

	REQ_CHECK_WCT(req, 4);
	REQ_TALLOC(io, sizeof(*io));

	io->in.fnum   = req_fnum(req, req->in.vwv,  VWV(0));
	io->in.mode   = SVAL(req->in.vwv,  VWV(1));
	io->in.offset = IVALS(req->in.vwv, VWV(2));

	req->async.send_fn = reply_lseek_send;
	req->async.private = io;
	
	/* call backend */
	req->async.status = req->conn->ntvfs_ops->seek(req, io);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a flush.
****************************************************************************/
void reply_flush(struct request_context *req)
{
	struct smb_flush *io;

	/* parse request */
	REQ_CHECK_WCT(req, 1);
	REQ_TALLOC(io, sizeof(*io));

	io->in.fnum   = req_fnum(req, req->in.vwv,  VWV(0));
	
	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->flush(req, io);
	
	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a exit.
****************************************************************************/
void reply_exit(struct request_context *req)
{
	REQ_CHECK_WCT(req, 0);

	req->async.send_fn = reply_simple_send;

	if (!req->conn) {
		req_reply_error(req, NT_STATUS_INVALID_HANDLE);
		return;
	}

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->exit(req);
	
	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a close 

 Note that this has to deal with closing a directory opened by NT SMB's.
****************************************************************************/
void reply_close(struct request_context *req)
{
	union smb_close *io;

	/* parse request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(io, sizeof(*io));

	io->close.level = RAW_CLOSE_CLOSE;
	io->close.in.fnum  = req_fnum(req, req->in.vwv,  VWV(0));
	io->close.in.write_time = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(1));

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->close(req, io);

	REQ_ASYNC_TAIL;
}



/****************************************************************************
 Reply to a writeclose (async reply)
****************************************************************************/
static void reply_writeclose_send(struct request_context *req)
{
	union smb_write *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), io->write.out.nwritten);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a writeclose (Core+ protocol).
****************************************************************************/
void reply_writeclose(struct request_context *req)
{
	union smb_write *io;

	/* this one is pretty weird - the wct can be 6 or 12 */
	if (req->in.wct != 12) {
		REQ_CHECK_WCT(req, 6);
	}

	REQ_TALLOC(io, sizeof(*io));

	io->writeclose.level = RAW_WRITE_WRITECLOSE;
	io->writeclose.in.fnum   = req_fnum(req, req->in.vwv, VWV(0));
	io->writeclose.in.count  = SVAL(req->in.vwv, VWV(1));
	io->writeclose.in.offset = IVAL(req->in.vwv, VWV(2));
	io->writeclose.in.mtime  = srv_pull_dos_date3(req->smb, req->in.vwv + VWV(4));
	io->writeclose.in.data   = req->in.data + 1;

	/* make sure they gave us the data they promised */
	if (req_data_oob(req, io->writeclose.in.data, io->writeclose.in.count)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_writeclose_send;
	req->async.private = io;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->write(req, io);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a lock.
****************************************************************************/
void reply_lock(struct request_context *req)
{
	union smb_lock *lck;

	/* parse request */
	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(lck, sizeof(*lck));

	lck->lock.level     = RAW_LOCK_LOCK;
	lck->lock.in.fnum   = req_fnum(req, req->in.vwv, VWV(0));
	lck->lock.in.count  = IVAL(req->in.vwv, VWV(1));
	lck->lock.in.offset = IVAL(req->in.vwv, VWV(3));

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->lock(req, lck);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a unlock.
****************************************************************************/
void reply_unlock(struct request_context *req)
{
	union smb_lock *lck;

	/* parse request */
	REQ_CHECK_WCT(req, 5);
	REQ_TALLOC(lck, sizeof(*lck));

	lck->unlock.level = RAW_LOCK_UNLOCK;
	lck->unlock.in.fnum   = req_fnum(req, req->in.vwv, VWV(0));
	lck->unlock.in.count  = IVAL(req->in.vwv, VWV(1));
	lck->unlock.in.offset = IVAL(req->in.vwv, VWV(3));

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->lock(req, lck);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a tdis.
****************************************************************************/
void reply_tdis(struct request_context *req)
{
	REQ_CHECK_WCT(req, 0);

	close_cnum(req->conn);

	/* construct reply */
	req_setup_reply(req, 0, 0);

	req_send_reply(req);
}


/****************************************************************************
 Reply to a echo. This is one of the few calls that is handled directly (the
 backends don't see it at all)
****************************************************************************/
void reply_echo(struct request_context *req)
{
	uint16 count;
	int i;

	REQ_CHECK_WCT(req, 0);

	count = SVAL(req->in.vwv, VWV(0));

	req_setup_reply(req, 1, req->in.data_size);

	memcpy(req->out.data, req->in.data, req->in.data_size);

	/* we need to make sure the request isn't destroyed till the
	 * last packet */
	req->control_flags |= REQ_CONTROL_PROTECTED;

	for (i=1; i <= count;i++) {
		if (i == count) {
			req->control_flags &= ~REQ_CONTROL_PROTECTED;
		}

		SSVAL(req->out.vwv, VWV(0), i);
		req_send_reply(req);
	}
}



/****************************************************************************
 Reply to a printopen (async reply)
****************************************************************************/
static void reply_printopen_send(struct request_context *req)
{
	union smb_open *oi = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), oi->open.out.fnum);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a printopen.
****************************************************************************/
void reply_printopen(struct request_context *req)
{
	union smb_open *oi;

	/* parse request */
	REQ_CHECK_WCT(req, 2);
	REQ_TALLOC(oi, sizeof(*oi));

	oi->splopen.level = RAW_OPEN_SPLOPEN;
	oi->splopen.in.setup_length = SVAL(req->in.vwv, VWV(0));
	oi->splopen.in.mode         = SVAL(req->in.vwv, VWV(1));

	req_pull_ascii4(req, &oi->splopen.in.ident, req->in.data, STR_TERMINATE);

	req->async.send_fn = reply_printopen_send;
	req->async.private = oi;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->open(req, oi);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a printclose.
****************************************************************************/
void reply_printclose(struct request_context *req)
{
	union smb_close *io;

	/* parse request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(io, sizeof(*io));

	io->splclose.level = RAW_CLOSE_SPLCLOSE;
	io->splclose.in.fnum = req_fnum(req, req->in.vwv,  VWV(0));

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->close(req, io);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a printqueue.
****************************************************************************/
void reply_printqueue_send(struct request_context *req)
{
	union smb_lpq *lpq = req->async.private;
	int i, maxcount;
	const uint_t el_size = 28;	

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 2, 0);

	/* truncate the returned list to fit in the negotiated buffer size */
	maxcount = (req_max_data(req) - 3) / el_size;
	if (maxcount < lpq->retq.out.count) {
		lpq->retq.out.count = maxcount;
	}

	/* setup enough space in the reply */
	req_grow_data(req, 3 + el_size*lpq->retq.out.count);
	
	/* and fill it in */
	SSVAL(req->out.vwv, VWV(0), lpq->retq.out.count);
	SSVAL(req->out.vwv, VWV(1), lpq->retq.out.restart_idx);

	SCVAL(req->out.data, 0, SMB_DATA_BLOCK);
	SSVAL(req->out.data, 1, el_size*lpq->retq.out.count);

	req->out.ptr = req->out.data + 3;

	for (i=0;i<lpq->retq.out.count;i++) {
		srv_push_dos_date2(req->smb, req->out.ptr, 0 , lpq->retq.out.queue[i].time);
		SCVAL(req->out.ptr,  4, lpq->retq.out.queue[i].status);
		SSVAL(req->out.ptr,  5, lpq->retq.out.queue[i].job);
		SIVAL(req->out.ptr,  7, lpq->retq.out.queue[i].size);
		SCVAL(req->out.ptr, 11, 0); /* reserved */
		req_push_str(req, req->out.ptr+12, lpq->retq.out.queue[i].user, 16, STR_ASCII);
		req->out.ptr += el_size;
	}

	req_send_reply(req);
}

/****************************************************************************
 Reply to a printqueue.
****************************************************************************/
void reply_printqueue(struct request_context *req)
{
	union smb_lpq *lpq;

	/* parse request */
	REQ_CHECK_WCT(req, 2);
	REQ_TALLOC(lpq, sizeof(*lpq));

	lpq->retq.level = RAW_LPQ_RETQ;
	lpq->retq.in.maxcount = SVAL(req->in.vwv,  VWV(0));
	lpq->retq.in.startidx = SVAL(req->in.vwv,  VWV(1));

	req->async.send_fn = reply_printqueue_send;
	req->async.private = lpq;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->lpq(req, lpq);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a printwrite.
****************************************************************************/
void reply_printwrite(struct request_context *req)
{
	union smb_write *io;

	/* parse request */
	REQ_CHECK_WCT(req, 1);
	REQ_TALLOC(io, sizeof(*io));

	io->splwrite.level = RAW_WRITE_SPLWRITE;

	if (req->in.data_size < 3) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	io->splwrite.in.fnum  = req_fnum(req, req->in.vwv, VWV(0));
	io->splwrite.in.count = SVAL(req->in.data, 1);
	io->splwrite.in.data  = req->in.data + 3;

	/* make sure they gave us the data they promised */
	if (req_data_oob(req, io->splwrite.in.data, io->splwrite.in.count)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->write(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a mkdir.
****************************************************************************/
void reply_mkdir(struct request_context *req)
{
	union smb_mkdir *io;

	/* parse the request */
	REQ_CHECK_WCT(req, 0);
	REQ_TALLOC(io, sizeof(*io));

	io->generic.level = RAW_MKDIR_MKDIR;
	req_pull_ascii4(req, &io->mkdir.in.path, req->in.data, STR_TERMINATE);

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->mkdir(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a rmdir.
****************************************************************************/
void reply_rmdir(struct request_context *req)
{
	struct smb_rmdir *io;
 
	/* parse the request */
	REQ_CHECK_WCT(req, 0);
	REQ_TALLOC(io, sizeof(*io));

	req_pull_ascii4(req, &io->in.path, req->in.data, STR_TERMINATE);

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->rmdir(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a mv.
****************************************************************************/
void reply_mv(struct request_context *req)
{
	union smb_rename *io;
	char *p;
 
	/* parse the request */
	REQ_CHECK_WCT(req, 1);
	REQ_TALLOC(io, sizeof(*io));

	io->generic.level = RAW_RENAME_RENAME;
	io->rename.in.attrib = SVAL(req->in.vwv, VWV(0));

	p = req->in.data;
	p += req_pull_ascii4(req, &io->rename.in.pattern1, p, STR_TERMINATE);
	p += req_pull_ascii4(req, &io->rename.in.pattern2, p, STR_TERMINATE);

	if (!io->rename.in.pattern1 || !io->rename.in.pattern2) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->rename(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to an NT rename.
****************************************************************************/
void reply_ntrename(struct request_context *req)
{
	union smb_rename *io;
	char *p;
 
	/* parse the request */
	REQ_CHECK_WCT(req, 4);
	REQ_TALLOC(io, sizeof(*io));

	io->generic.level = RAW_RENAME_NTRENAME;
	io->ntrename.in.attrib  = SVAL(req->in.vwv, VWV(0));
	io->ntrename.in.flags   = SVAL(req->in.vwv, VWV(1));
	io->ntrename.in.cluster_size = IVAL(req->in.vwv, VWV(2));

	p = req->in.data;
	p += req_pull_ascii4(req, &io->ntrename.in.old_name, p, STR_TERMINATE);
	p += req_pull_ascii4(req, &io->ntrename.in.new_name, p, STR_TERMINATE);

	if (!io->ntrename.in.old_name || !io->ntrename.in.new_name) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->rename(req, io);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a file copy (async reply)
****************************************************************************/
static void reply_copy_send(struct request_context *req)
{
	struct smb_copy *cp = req->async.private;

	CHECK_ASYNC_STATUS;

	/* build the reply */
	req_setup_reply(req, 1, 0);

	SSVAL(req->out.vwv, VWV(0), cp->out.count);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a file copy.
****************************************************************************/
void reply_copy(struct request_context *req)
{
	struct smb_copy *cp;
	char *p;

	/* parse request */
	REQ_CHECK_WCT(req, 3);
	REQ_TALLOC(cp, sizeof(*cp));

	cp->in.tid2  = SVAL(req->in.vwv, VWV(0));
	cp->in.ofun  = SVAL(req->in.vwv, VWV(1));
	cp->in.flags = SVAL(req->in.vwv, VWV(2));

	p = req->in.data;
	p += req_pull_ascii4(req, &cp->in.path1, p, STR_TERMINATE);
	p += req_pull_ascii4(req, &cp->in.path2, p, STR_TERMINATE);

	if (!cp->in.path1 || !cp->in.path2) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_copy_send;
	req->async.private = cp;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->copy(req, cp);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a lockingX request (async send)
****************************************************************************/
static void reply_lockingX_send(struct request_context *req)
{
	union smb_lock *lck = req->async.private;

	CHECK_ASYNC_STATUS;

	/* if it was an oplock break ack then we only send a reply if
	   there was an error */
	if (lck->lockx.in.ulock_cnt + lck->lockx.in.lock_cnt == 0) {
		req_destroy(req);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 2, 0);
	
	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);

	chain_reply(req);
}


/****************************************************************************
 Reply to a lockingX request.
****************************************************************************/
void reply_lockingX(struct request_context *req)
{
	union smb_lock *lck;
	uint_t total_locks, i;
	uint_t lck_size;
	char *p;

	/* parse request */
	REQ_CHECK_WCT(req, 8);
	REQ_TALLOC(lck, sizeof(*lck));

	lck->lockx.level = RAW_LOCK_LOCKX;
	lck->lockx.in.fnum      = req_fnum(req, req->in.vwv, VWV(2));
	lck->lockx.in.mode      = SVAL(req->in.vwv, VWV(3));
	lck->lockx.in.timeout   = IVAL(req->in.vwv, VWV(4));
	lck->lockx.in.ulock_cnt = SVAL(req->in.vwv, VWV(6));
	lck->lockx.in.lock_cnt  = SVAL(req->in.vwv, VWV(7));

	total_locks = lck->lockx.in.ulock_cnt + lck->lockx.in.lock_cnt;

	/* there are two varients, one with 64 bit offsets and counts */
	if (lck->lockx.in.mode & LOCKING_ANDX_LARGE_FILES) {
		lck_size = 20;
	} else {
		lck_size = 10;		
	}

	/* make sure we got the promised data */
	if (req_data_oob(req, req->in.data, total_locks * lck_size)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	/* allocate the locks array */
	if (total_locks) {
		REQ_TALLOC(lck->lockx.in.locks, total_locks * sizeof(lck->lockx.in.locks[0]));
	}

	p = req->in.data;

	/* construct the locks array */
	for (i=0;i<total_locks;i++) {
		uint32 ofs_high=0, count_high=0;

		lck->lockx.in.locks[i].pid = SVAL(p, 0);

		if (lck->lockx.in.mode & LOCKING_ANDX_LARGE_FILES) {
			ofs_high   = IVAL(p, 4);
			lck->lockx.in.locks[i].offset = IVAL(p, 8);
			count_high = IVAL(p, 12);
			lck->lockx.in.locks[i].count  = IVAL(p, 16);
		} else {
			lck->lockx.in.locks[i].offset = IVAL(p, 2);
			lck->lockx.in.locks[i].count  = IVAL(p, 6);
		}
		if (ofs_high != 0 || count_high != 0) {
#ifdef LARGE_SMB_OFF_T
			lck->lockx.in.locks[i].count  |= ((SMB_OFF_T)count_high) << 32;
			lck->lockx.in.locks[i].offset |= ((SMB_OFF_T)ofs_high) << 32;
#else
			req_reply_error(req, NT_STATUS_FOOBAR);
			return;
#endif
		}
		p += lck_size;
	}

	req->async.send_fn = reply_lockingX_send;
	req->async.private = lck;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->lock(req, lck);

	REQ_ASYNC_TAIL;
}

/****************************************************************************
 Reply to a SMBreadbmpx (read block multiplex) request.
****************************************************************************/
void reply_readbmpx(struct request_context *req)
{
	/* tell the client to not use a multiplexed read - its too broken to use */
	req_reply_dos_error(req, ERRSRV, ERRuseSTD);
}


/****************************************************************************
 Reply to a SMBsetattrE.
****************************************************************************/
void reply_setattrE(struct request_context *req)
{
	union smb_setfileinfo *info;

	/* parse request */
	REQ_CHECK_WCT(req, 7);
	REQ_TALLOC(info, sizeof(*info));

	info->setattre.level = RAW_SFILEINFO_SETATTRE;
	info->setattre.file.fnum =      req_fnum(req, req->in.vwv,    VWV(0));
	info->setattre.in.create_time = srv_pull_dos_date2(req->smb, req->in.vwv + VWV(1));
	info->setattre.in.access_time = srv_pull_dos_date2(req->smb, req->in.vwv + VWV(3));
	info->setattre.in.write_time  = srv_pull_dos_date2(req->smb, req->in.vwv + VWV(5));

	req->async.send_fn = reply_simple_send;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->setfileinfo(req, info);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to a SMBwritebmpx (write block multiplex primary) request.
****************************************************************************/
void reply_writebmpx(struct request_context *req)
{
	/* we will need to implement this one for OS/2, but right now I can't be bothered */
	req_reply_error(req, NT_STATUS_FOOBAR);
}


/****************************************************************************
 Reply to a SMBwritebs (write block multiplex secondary) request.
****************************************************************************/
void reply_writebs(struct request_context *req)
{
	/* see reply_writebmpx */
	req_reply_error(req, NT_STATUS_FOOBAR);
}



/****************************************************************************
 Reply to a SMBgetattrE (async reply)
****************************************************************************/
static void reply_getattrE_send(struct request_context *req)
{
	union smb_fileinfo *info = req->async.private;

	CHECK_ASYNC_STATUS;

	/* setup reply */
	req_setup_reply(req, 11, 0);

	srv_push_dos_date2(req->smb, req->out.vwv, VWV(0), info->getattre.out.create_time);
	srv_push_dos_date2(req->smb, req->out.vwv, VWV(2), info->getattre.out.access_time);
	srv_push_dos_date2(req->smb, req->out.vwv, VWV(4), info->getattre.out.write_time);
	SIVAL(req->out.vwv,         VWV(6), info->getattre.out.size);
	SIVAL(req->out.vwv,         VWV(8), info->getattre.out.alloc_size);
	SSVAL(req->out.vwv,        VWV(10), info->getattre.out.attrib);

	req_send_reply(req);
}

/****************************************************************************
 Reply to a SMBgetattrE.
****************************************************************************/
void reply_getattrE(struct request_context *req)
{
	union smb_fileinfo *info;

	/* parse request */
	REQ_CHECK_WCT(req, 1);
	REQ_TALLOC(info, sizeof(*info));

	info->getattr.level = RAW_FILEINFO_GETATTRE;
	info->getattr.in.fnum = req_fnum(req, req->in.vwv, VWV(0));

	req->async.send_fn = reply_getattrE_send;
	req->async.private = info;

	/* call backend */
	req->async.status = req->conn->ntvfs_ops->qfileinfo(req, info);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
reply to an old style session setup command
****************************************************************************/
static void reply_sesssetup_old(struct request_context *req)
{
	NTSTATUS status;
	union smb_sesssetup sess;
	char *p;
	uint16 passlen;

	sess.old.level = RAW_SESSSETUP_OLD;

	/* parse request */
	sess.old.in.bufsize = SVAL(req->in.vwv, VWV(2));
	sess.old.in.mpx_max = SVAL(req->in.vwv, VWV(3));
	sess.old.in.vc_num  = SVAL(req->in.vwv, VWV(4));
	sess.old.in.sesskey = IVAL(req->in.vwv, VWV(5));
	passlen             = SVAL(req->in.vwv, VWV(7));

	/* check the request isn't malformed */
	if (req_data_oob(req, req->in.data, passlen)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	
	p = req->in.data;
	if (!req_pull_blob(req, p, passlen, &sess.old.in.password)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	p += passlen;
	
	p += req_pull_string(req, &sess.old.in.user,   p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.old.in.domain, p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.old.in.os,     p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.old.in.lanman, p, -1, STR_TERMINATE);

	/* call the generic handler */
	status = sesssetup_backend(req, &sess);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 3, 0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), sess.old.out.action);

	SSVAL(req->out.hdr, HDR_UID, sess.old.out.vuid);

	chain_reply(req);
}


/****************************************************************************
reply to an NT1 style session setup command
****************************************************************************/
static void reply_sesssetup_nt1(struct request_context *req)
{
	NTSTATUS status;
	union smb_sesssetup sess;
	char *p;
	uint16 passlen1, passlen2;

	sess.nt1.level = RAW_SESSSETUP_NT1;

	/* parse request */
	sess.nt1.in.bufsize      = SVAL(req->in.vwv, VWV(2));
	sess.nt1.in.mpx_max      = SVAL(req->in.vwv, VWV(3));
	sess.nt1.in.vc_num       = SVAL(req->in.vwv, VWV(4));
	sess.nt1.in.sesskey      = IVAL(req->in.vwv, VWV(5));
	passlen1                 = SVAL(req->in.vwv, VWV(7));
	passlen2                 = SVAL(req->in.vwv, VWV(8));
	sess.nt1.in.capabilities = IVAL(req->in.vwv, VWV(11));

	/* check the request isn't malformed */
	if (req_data_oob(req, req->in.data, passlen1) ||
	    req_data_oob(req, req->in.data + passlen1, passlen2)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	
	p = req->in.data;
	if (!req_pull_blob(req, p, passlen1, &sess.nt1.in.password1)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	p += passlen1;
	if (!req_pull_blob(req, p, passlen2, &sess.nt1.in.password2)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	p += passlen2;
	
	p += req_pull_string(req, &sess.nt1.in.user,   p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.nt1.in.domain, p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.nt1.in.os,     p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.nt1.in.lanman, p, -1, STR_TERMINATE);

	/* call the generic handler */
	status = sesssetup_backend(req, &sess);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 3, 0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), sess.nt1.out.action);

	SSVAL(req->out.hdr, HDR_UID, sess.nt1.out.vuid);

	req_push_str(req, NULL, sess.nt1.out.os, -1, STR_TERMINATE);
	req_push_str(req, NULL, sess.nt1.out.lanman, -1, STR_TERMINATE);
	req_push_str(req, NULL, sess.nt1.out.domain, -1, STR_TERMINATE);

	chain_reply(req);
}


/****************************************************************************
reply to an SPNEGO style session setup command
****************************************************************************/
static void reply_sesssetup_spnego(struct request_context *req)
{
	NTSTATUS status;
	union smb_sesssetup sess;
	char *p;
	uint16 blob_len;

	sess.spnego.level = RAW_SESSSETUP_SPNEGO;

	/* parse request */
	sess.spnego.in.bufsize      = SVAL(req->in.vwv, VWV(2));
	sess.spnego.in.mpx_max      = SVAL(req->in.vwv, VWV(3));
	sess.spnego.in.vc_num       = SVAL(req->in.vwv, VWV(4));
	sess.spnego.in.sesskey      = IVAL(req->in.vwv, VWV(5));
	blob_len                    = SVAL(req->in.vwv, VWV(7));
	sess.spnego.in.capabilities = IVAL(req->in.vwv, VWV(10));

	p = req->in.data;
	if (!req_pull_blob(req, p, blob_len, &sess.spnego.in.secblob)) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}
	p += blob_len;
	
	p += req_pull_string(req, &sess.spnego.in.os,     p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.spnego.in.lanman, p, -1, STR_TERMINATE);
	p += req_pull_string(req, &sess.spnego.in.domain, p, -1, STR_TERMINATE);

	/* call the generic handler */
	status = sesssetup_backend(req, &sess);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 4, sess.spnego.out.secblob.length);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);
	SSVAL(req->out.vwv, VWV(2), sess.spnego.out.action);
	SSVAL(req->out.vwv, VWV(3), sess.spnego.out.secblob.length);

	SSVAL(req->out.hdr, HDR_UID, sess.spnego.out.vuid);

	memcpy(req->out.data, sess.spnego.out.secblob.data, sess.spnego.out.secblob.length);
	req_push_str(req, NULL, sess.spnego.out.os, -1, STR_TERMINATE);
	req_push_str(req, NULL, sess.spnego.out.lanman, -1, STR_TERMINATE);

	chain_reply(req);
}


/****************************************************************************
reply to a session setup command
****************************************************************************/
void reply_sesssetup(struct request_context *req)
{
	switch (req->in.wct) {
	case 10:
		/* a pre-NT1 call */
		reply_sesssetup_old(req);
		return;
	case 13:
		/* a NT1 call */
		reply_sesssetup_nt1(req);
		return;
	case 12:
		/* a SPNEGO call */
		reply_sesssetup_spnego(req);
		return;
	}

	/* unsupported varient */
	req_reply_error(req, NT_STATUS_FOOBAR);
}


/****************************************************************************
 Reply to a SMBulogoffX.
****************************************************************************/
void reply_ulogoffX(struct request_context *req)
{
	uint16 vuid;

	vuid = SVAL(req->in.hdr, HDR_UID);
	
	/* in user level security we are supposed to close any files
	   open by this user */
	if ((vuid != 0) && (lp_security() != SEC_SHARE)) {
		DEBUG(0,("REWRITE: not closing user files\n"));
	}

	invalidate_vuid(req->smb, vuid);

	req_setup_reply(req, 2, 0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);	
	
	chain_reply(req);
}


/****************************************************************************
 Reply to an SMBfindclose request
****************************************************************************/
void reply_findclose(struct request_context *req)
{
	NTSTATUS status;
	union smb_search_close io;

	io.findclose.level = RAW_FINDCLOSE_CLOSE;

	/* parse request */
	REQ_CHECK_WCT(req, 1);

	io.findclose.in.handle  = SVAL(req->in.vwv, VWV(0));
	
	/* call backend */
	status = req->conn->ntvfs_ops->search_close(req, &io);

	if (!NT_STATUS_IS_OK(status)) {
		req_reply_error(req, status);
		return;
	}

	/* construct reply */
	req_setup_reply(req, 0, 0);

	req_send_reply(req);	
}

/****************************************************************************
 Reply to an SMBfindnclose request
****************************************************************************/
void reply_findnclose(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}


/****************************************************************************
 Reply to an SMBntcreateX request (async send)
****************************************************************************/
static void reply_ntcreate_and_X_send(struct request_context *req)
{
	union smb_open *io = req->async.private;

	CHECK_ASYNC_STATUS;

	/* construct reply */
	req_setup_reply(req, 34, 0);

	SSVAL(req->out.vwv, VWV(0), SMB_CHAIN_NONE);
	SSVAL(req->out.vwv, VWV(1), 0);	
	SCVAL(req->out.vwv, VWV(2), io->ntcreatex.out.oplock_level);

	/* the rest of the parameters are not aligned! */
	SSVAL(req->out.vwv,        5, io->ntcreatex.out.fnum);
	SIVAL(req->out.vwv,        7, io->ntcreatex.out.create_action);
	push_nttime(req->out.vwv, 11, &io->ntcreatex.out.create_time);
	push_nttime(req->out.vwv, 19, &io->ntcreatex.out.access_time);
	push_nttime(req->out.vwv, 27, &io->ntcreatex.out.write_time);
	push_nttime(req->out.vwv, 35, &io->ntcreatex.out.change_time);
	SIVAL(req->out.vwv,       43, io->ntcreatex.out.attrib);
	SBVAL(req->out.vwv,       47, io->ntcreatex.out.alloc_size);
	SBVAL(req->out.vwv,       55, io->ntcreatex.out.size);
	SSVAL(req->out.vwv,       63, io->ntcreatex.out.file_type);
	SSVAL(req->out.vwv,       65, io->ntcreatex.out.ipc_state);
	SCVAL(req->out.vwv,       67, io->ntcreatex.out.is_directory);

	chain_reply(req);
}

/****************************************************************************
 Reply to an SMBntcreateX request
****************************************************************************/
void reply_ntcreate_and_X(struct request_context *req)
{
	union smb_open *io;
	uint16 fname_len;

	/* parse the request */
	REQ_CHECK_WCT(req, 24);
	REQ_TALLOC(io, sizeof(*io));

	io->ntcreatex.level = RAW_OPEN_NTCREATEX;

	/* notice that the word parameters are not word aligned, so we don't use VWV() */
	fname_len =                         SVAL(req->in.vwv, 5);
	io->ntcreatex.in.flags =            IVAL(req->in.vwv, 7);
	io->ntcreatex.in.root_fid =         IVAL(req->in.vwv, 11);
	io->ntcreatex.in.access_mask =      IVAL(req->in.vwv, 15);
	io->ntcreatex.in.alloc_size =       BVAL(req->in.vwv, 19);
	io->ntcreatex.in.file_attr =        IVAL(req->in.vwv, 27);
	io->ntcreatex.in.share_access =     IVAL(req->in.vwv, 31);
	io->ntcreatex.in.open_disposition = IVAL(req->in.vwv, 35);
	io->ntcreatex.in.create_options =   IVAL(req->in.vwv, 39);
	io->ntcreatex.in.impersonation =    IVAL(req->in.vwv, 43);
	io->ntcreatex.in.security_flags =   CVAL(req->in.vwv, 47);

	/* we need a neater way to handle this alignment */
	if ((req->flags2 & FLAGS2_UNICODE_STRINGS) && 
	    ucs2_align(req->in.buffer, req->in.data, STR_TERMINATE|STR_UNICODE)) {
		fname_len++;
	}

	req_pull_string(req, &io->ntcreatex.in.fname, req->in.data, fname_len, STR_TERMINATE);
	if (!io->ntcreatex.in.fname) {
		req_reply_error(req, NT_STATUS_FOOBAR);
		return;
	}

	req->async.send_fn = reply_ntcreate_and_X_send;
	req->async.private = io;

	/* call the backend */
	req->async.status = req->conn->ntvfs_ops->open(req, io);

	REQ_ASYNC_TAIL;
}


/****************************************************************************
 Reply to an SMBntcancel request
****************************************************************************/
void reply_ntcancel(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}

/****************************************************************************
 Reply to an SMBsends request
****************************************************************************/
void reply_sends(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}

/****************************************************************************
 Reply to an SMBsendstrt request
****************************************************************************/
void reply_sendstrt(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}

/****************************************************************************
 Reply to an SMBsendend request
****************************************************************************/
void reply_sendend(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}

/****************************************************************************
 Reply to an SMBsendtxt request
****************************************************************************/
void reply_sendtxt(struct request_context *req)
{
	req_reply_error(req, NT_STATUS_FOOBAR);
}



/****************************************************************************
 Reply to a special message - a SMB packet with non zero NBT message type
****************************************************************************/
void reply_special(struct request_context *req)
{
	uint8 msg_type;
	char buf[4];
	
	msg_type = CVAL(req->in.buffer,0);

	SIVAL(buf, 0, 0);
	
	switch (msg_type) {
	case 0x81: /* session request */
		if (req->smb->negotiate.done_nbt_session) {
			exit_server(req->smb, "multiple session request not permitted");
		}
		
		SCVAL(buf,0,0x82);
		SCVAL(buf,3,0);
		
		DEBUG(0,("REWRITE: not parsing netbios names in NBT session request!\n"));
		
		req->smb->negotiate.done_nbt_session = True;
		
		req->out.buffer = buf;
		req->out.size = 4;
		req_send_reply(req);
		return;
		
	case 0x89: /* session keepalive request 
		      (some old clients produce this?) */
		SCVAL(buf, 0, SMBkeepalive);
		SCVAL(buf, 3, 0);
		req->out.buffer = buf;
		req->out.size = 4;
		req_send_reply(req);
		return;
		
	case SMBkeepalive: 
		/* session keepalive - swallow it */
		req_destroy(req);
		return;
	}

	DEBUG(0,("Unexpected NBT session packet (%d)\n", msg_type));
	req_destroy(req);
}