| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 |
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| 4 | SMB2 client lock handling
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| 5 |
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| 6 | Copyright (C) Stefan Metzmacher 2006
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| 7 |
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| 8 | This program is free software; you can redistribute it and/or modify
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| 9 | it under the terms of the GNU General Public License as published by
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| 10 | the Free Software Foundation; either version 3 of the License, or
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| 11 | (at your option) any later version.
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| 12 |
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| 13 | This program is distributed in the hope that it will be useful,
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| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 16 | GNU General Public License for more details.
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| 17 |
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| 18 | You should have received a copy of the GNU General Public License
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| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 20 | */
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| 21 |
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| 22 | #include "includes.h"
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| 23 | #include "libcli/smb2/smb2.h"
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| 24 | #include "libcli/smb2/smb2_calls.h"
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| 25 |
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| 26 | /*
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| 27 | send a lock request
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| 28 | */
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| 29 | struct smb2_request *smb2_lock_send(struct smb2_tree *tree, struct smb2_lock *io)
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| 30 | {
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| 31 | struct smb2_request *req;
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| 32 | int i;
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| 33 |
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| 34 | req = smb2_request_init_tree(tree, SMB2_OP_LOCK,
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| 35 | 24 + io->in.lock_count*24, false, 0);
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| 36 | if (req == NULL) return NULL;
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| 37 |
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| 38 | /* this is quite bizarre - the spec says we must lie about the length! */
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| 39 | SSVAL(req->out.body, 0, 0x30);
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| 40 |
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| 41 | SSVAL(req->out.body, 0x02, io->in.lock_count);
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| 42 | SIVAL(req->out.body, 0x04, io->in.lock_sequence);
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| 43 | smb2_push_handle(req->out.body+0x08, &io->in.file.handle);
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| 44 |
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| 45 | for (i=0;i<io->in.lock_count;i++) {
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| 46 | SBVAL(req->out.body, 0x18 + i*24, io->in.locks[i].offset);
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| 47 | SBVAL(req->out.body, 0x20 + i*24, io->in.locks[i].length);
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| 48 | SIVAL(req->out.body, 0x28 + i*24, io->in.locks[i].flags);
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| 49 | SIVAL(req->out.body, 0x2C + i*24, io->in.locks[i].reserved);
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| 50 | }
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| 51 |
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| 52 | smb2_transport_send(req);
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| 53 |
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| 54 | return req;
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| 55 | }
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| 56 |
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| 57 |
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| 58 | /*
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| 59 | recv a lock reply
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| 60 | */
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| 61 | NTSTATUS smb2_lock_recv(struct smb2_request *req, struct smb2_lock *io)
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| 62 | {
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| 63 | if (!smb2_request_receive(req) ||
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| 64 | smb2_request_is_error(req)) {
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| 65 | return smb2_request_destroy(req);
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| 66 | }
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| 67 |
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| 68 | SMB2_CHECK_PACKET_RECV(req, 0x04, false);
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| 69 |
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| 70 | io->out.reserved = SVAL(req->in.body, 0x02);
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| 71 |
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| 72 | return smb2_request_destroy(req);
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| 73 | }
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| 74 |
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| 75 | /*
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| 76 | sync lock request
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| 77 | */
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| 78 | NTSTATUS smb2_lock(struct smb2_tree *tree, struct smb2_lock *io)
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| 79 | {
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| 80 | struct smb2_request *req = smb2_lock_send(tree, io);
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| 81 | return smb2_lock_recv(req, io);
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| 82 | }
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