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*/ 29struct smb2_request *smb2_lock_send(struct smb2_tree *tree, struct smb2_lock *io) 30{ 31 struct smb2_request *req; 32 int i; 33 34 req = smb2_request_init_tree(tree, SMB2_OP_LOCK, 35 24 + io->in.lock_count*24, false, 0); 36 if (req == NULL) return NULL; 37 38 /* this is quite bizarre - the spec says we must lie about the length! */ 39 SSVAL(req->out.body, 0, 0x30); 40 41 SSVAL(req->out.body, 0x02, io->in.lock_count); 42 SIVAL(req->out.body, 0x04, io->in.reserved); 43 smb2_push_handle(req->out.body+0x08, &io->in.file.handle); 44 45 for (i=0;i<io->in.lock_count;i++) { 46 SBVAL(req->out.body, 0x18 + i*24, io->in.locks[i].offset); 47 SBVAL(req->out.body, 0x20 + i*24, io->in.locks[i].length); 48 SIVAL(req->out.body, 0x28 + i*24, io->in.locks[i].flags); 49 SIVAL(req->out.body, 0x2C + i*24, io->in.locks[i].reserved); 50 } 51 52 smb2_transport_send(req); 53 54 return req; 55} 56 57 58/* 59 recv a lock reply 60*/ 61NTSTATUS smb2_lock_recv(struct smb2_request *req, struct smb2_lock *io) 62{ 63 if (!smb2_request_receive(req) || 64 smb2_request_is_error(req)) { 65 return smb2_request_destroy(req); 66 } 67 68 SMB2_CHECK_PACKET_RECV(req, 0x04, false); 69 70 io->out.reserved = SVAL(req->in.body, 0x02); 71 72 return smb2_request_destroy(req); 73} 74 75/* 76 sync lock request 77*/ 78NTSTATUS smb2_lock(struct smb2_tree *tree, struct smb2_lock *io) 79{ 80 struct smb2_request *req = smb2_lock_send(tree, io); 81 return smb2_lock_recv(req, io); 82} 83