source4/libcli/smb2/lock.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    SMB2 client lock handling
   5
   6    Copyright (C) Stefan Metzmacher 2006
   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 2 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, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "libcli/smb2/smb2.h"
  25 #include "libcli/smb2/smb2_calls.h"
  26
  27 /*
  28   send a lock request
  29 */
  30 struct smb2_request *smb2_lock_send(struct smb2_tree *tree, struct smb2_lock *io)
  31 {
  32         struct smb2_request *req;
  33
  34         req = smb2_request_init_tree(tree, SMB2_OP_LOCK, 0x30, False, 0);
  35         if (req == NULL) return NULL;
  36
  37         SSVAL(req->out.body, 0x02, io->in.unknown1);
  38         SIVAL(req->out.body, 0x04, io->in.unknown2);
  39         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
  40         SBVAL(req->out.body, 0x18, io->in.offset);
  41         SBVAL(req->out.body, 0x20, io->in.count);
  42         SIVAL(req->out.body, 0x28, io->in.unknown5);
  43         SIVAL(req->out.body, 0x28, io->in.flags);
  44
  45         smb2_transport_send(req);
  46
  47         return req;
  48 }
  49
  50
  51 /*
  52   recv a lock reply
  53 */
  54 NTSTATUS smb2_lock_recv(struct smb2_request *req, struct smb2_lock *io)
  55 {
  56         if (!smb2_request_receive(req) ||
  57             smb2_request_is_error(req)) {
  58                 return smb2_request_destroy(req);
  59         }
  60
  61         SMB2_CHECK_PACKET_RECV(req, 0x04, False);
  62
  63         io->out.unknown1 = SVAL(req->in.body, 0x02);
  64
  65         return smb2_request_destroy(req);
  66 }
  67
  68 /*
  69   sync lock request
  70 */
  71 NTSTATUS smb2_lock(struct smb2_tree *tree, struct smb2_lock *io)
  72 {
  73         struct smb2_request *req = smb2_lock_send(tree, io);
  74         return smb2_lock_recv(req, io);
  75 }