Line data    Source code

       1             : /*
       2             :    Unix SMB/CIFS implementation.
       3             : 
       4             :    SMB2 client oplock break handling
       5             : 
       6             :    Copyright (C) Stefan Metzmacher 2008
       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 "libcli/smb2/smb2.h"
      24             : #include "libcli/smb2/smb2_calls.h"
      25             : 
      26             : /*
      27             :   send a break request
      28             : */
      29          46 : struct smb2_request *smb2_break_send(struct smb2_tree *tree, struct smb2_break *io)
      30             : {
      31             :         struct smb2_request *req;
      32             : 
      33          46 :         req = smb2_request_init_tree(tree, SMB2_OP_BREAK, 0x18, false, 0);
      34          46 :         if (req == NULL) return NULL;
      35             : 
      36          46 :         SCVAL(req->out.body, 0x02, io->in.oplock_level);
      37          46 :         SCVAL(req->out.body, 0x03, io->in.reserved);
      38          46 :         SIVAL(req->out.body, 0x04, io->in.reserved2);
      39          46 :         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
      40             : 
      41          46 :         smb2_transport_send(req);
      42             : 
      43          46 :         return req;
      44             : }
      45             : 
      46             : 
      47             : /*
      48             :   recv a break reply
      49             : */
      50          46 : NTSTATUS smb2_break_recv(struct smb2_request *req, struct smb2_break *io)
      51             : {
      52          90 :         if (!smb2_request_receive(req) ||
      53          46 :             !smb2_request_is_ok(req)) {
      54           4 :                 return smb2_request_destroy(req);
      55             :         }
      56             : 
      57          42 :         SMB2_CHECK_PACKET_RECV(req, 0x18, false);
      58             : 
      59          42 :         io->out.oplock_level = CVAL(req->in.body, 0x02);
      60          42 :         io->out.reserved     = CVAL(req->in.body, 0x03);
      61          42 :         io->out.reserved2    = IVAL(req->in.body, 0x04);
      62          42 :         smb2_pull_handle(req->in.body+0x08, &io->out.file.handle);
      63             : 
      64          42 :         return smb2_request_destroy(req);
      65             : }
      66             : 
      67             : /*
      68             :   sync flush request
      69             : */
      70           4 : NTSTATUS smb2_break(struct smb2_tree *tree, struct smb2_break *io)
      71             : {
      72           4 :         struct smb2_request *req = smb2_break_send(tree, io);
      73           4 :         return smb2_break_recv(req, io);
      74             : }