source4/libcli/smb2/break.c

   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 struct smb2_request *smb2_break_send(struct smb2_tree *tree, struct smb2_break *io)
  30 {
  31         struct smb2_request *req;
  32
  33         req = smb2_request_init_tree(tree, SMB2_OP_BREAK, 0x18, false, 0);
  34         if (req == NULL) return NULL;
  35
  36         SCVAL(req->out.body, 0x02, io->in.oplock_level);
  37         SCVAL(req->out.body, 0x03, io->in.reserved);
  38         SIVAL(req->out.body, 0x04, io->in.reserved2);
  39         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
  40
  41         smb2_transport_send(req);
  42
  43         return req;
  44 }
  45
  46
  47 /*
  48   recv a break reply
  49 */
  50 NTSTATUS smb2_break_recv(struct smb2_request *req, struct smb2_break *io)
  51 {
  52         if (!smb2_request_receive(req) ||
  53             !smb2_request_is_ok(req)) {
  54                 return smb2_request_destroy(req);
  55         }
  56
  57         SMB2_CHECK_PACKET_RECV(req, 0x18, false);
  58
  59         io->out.oplock_level    = CVAL(req->in.body, 0x02);
  60         io->out.reserved        = CVAL(req->in.body, 0x03);
  61         io->out.reserved2       = IVAL(req->in.body, 0x04);
  62         smb2_pull_handle(req->in.body+0x08, &io->out.file.handle);
  63
  64         return smb2_request_destroy(req);
  65 }
  66
  67 /*
  68   sync flush request
  69 */
  70 NTSTATUS smb2_break(struct smb2_tree *tree, struct smb2_break *io)
  71 {
  72         struct smb2_request *req = smb2_break_send(tree, io);
  73         return smb2_break_recv(req, io);
  74 }