Line data    Source code

       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 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 lock request
      28             : */
      29         403 : struct smb2_request *smb2_lock_send(struct smb2_tree *tree, struct smb2_lock *io)
      30             : {
      31             :         struct smb2_request *req;
      32             :         int i;
      33             : 
      34         403 :         req = smb2_request_init_tree(tree, SMB2_OP_LOCK, 
      35         403 :                                      24 + io->in.lock_count*24, false, 0);
      36         403 :         if (req == NULL) return NULL;
      37             : 
      38             :         /* this is quite bizarre - the spec says we must lie about the length! */
      39         403 :         SSVAL(req->out.body, 0, 0x30);
      40             : 
      41         403 :         SSVAL(req->out.body, 0x02, io->in.lock_count);
      42         403 :         SIVAL(req->out.body, 0x04, io->in.lock_sequence);
      43         403 :         smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
      44             : 
      45         812 :         for (i=0;i<io->in.lock_count;i++) {
      46         409 :                 SBVAL(req->out.body, 0x18 + i*24, io->in.locks[i].offset);
      47         409 :                 SBVAL(req->out.body, 0x20 + i*24, io->in.locks[i].length);
      48         409 :                 SIVAL(req->out.body, 0x28 + i*24, io->in.locks[i].flags);
      49         409 :                 SIVAL(req->out.body, 0x2C + i*24, io->in.locks[i].reserved);
      50             :         }
      51             : 
      52         403 :         smb2_transport_send(req);
      53             : 
      54         403 :         return req;
      55             : }
      56             : 
      57             : 
      58             : /*
      59             :   recv a lock reply
      60             : */
      61         403 : NTSTATUS smb2_lock_recv(struct smb2_request *req, struct smb2_lock *io)
      62             : {
      63         806 :         if (!smb2_request_receive(req) || 
      64         403 :             smb2_request_is_error(req)) {
      65         135 :                 return smb2_request_destroy(req);
      66             :         }
      67             : 
      68         268 :         SMB2_CHECK_PACKET_RECV(req, 0x04, false);
      69             : 
      70         268 :         io->out.reserved = SVAL(req->in.body, 0x02);
      71             : 
      72         268 :         return smb2_request_destroy(req);
      73             : }
      74             : 
      75             : /*
      76             :   sync lock request
      77             : */
      78         397 : NTSTATUS smb2_lock(struct smb2_tree *tree, struct smb2_lock *io)
      79             : {
      80         397 :         struct smb2_request *req = smb2_lock_send(tree, io);
      81         397 :         return smb2_lock_recv(req, io);
      82             : }