mirror of
https://github.com/samba-team/samba.git
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a5bafffd66
- the 0xffffffffffffffff seqnum is reserved for SMB2 Break (oplock breaks)
so don't use it in a request. we should someday try to test this...
metze
(This used to be commit 730cdc4475)
79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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Unix SMB/CIFS implementation.
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SMB2 client notify calls
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Copyright (C) Stefan Metzmacher 2006
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#include "libcli/raw/libcliraw.h"
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#include "libcli/smb2/smb2.h"
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#include "libcli/smb2/smb2_calls.h"
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/*
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send a cancel request
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*/
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NTSTATUS smb2_cancel(struct smb2_request *r)
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{
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NTSTATUS status;
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struct smb2_request *c;
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uint32_t old_timeout;
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uint64_t old_seqnum;
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/*
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* if we don't get a pending id yet, we just
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* mark the request for pending, so that we directly
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* send the cancel after getting the pending id
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*/
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if (!r->cancel.can_cancel) {
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r->cancel.do_cancel++;
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return NT_STATUS_OK;
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}
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/* we don't want a seqmun for a SMB2 Cancel */
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old_seqnum = r->transport->seqnum;
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c = smb2_request_init(r->transport, SMB2_OP_CANCEL, 0x04, False, 0);
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r->transport->seqnum = old_seqnum;
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NT_STATUS_HAVE_NO_MEMORY(c);
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c->seqnum = 0;
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SIVAL(c->out.hdr, SMB2_HDR_FLAGS, 0x00000002);
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SSVAL(c->out.hdr, SMB2_HDR_UNKNOWN1, 0x0030);
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SIVAL(c->out.hdr, SMB2_HDR_PID, r->cancel.pending_id);
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SBVAL(c->out.hdr, SMB2_HDR_SEQNUM, c->seqnum);
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if (r->session) {
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SBVAL(c->out.hdr, SMB2_HDR_UID, r->session->uid);
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}
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SSVAL(c->out.body, 0x02, 0);
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old_timeout = c->transport->options.timeout;
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c->transport->options.timeout = 0;
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smb2_transport_send(c);
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c->transport->options.timeout = old_timeout;
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if (c->state == SMB2_REQUEST_ERROR) {
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status = c->status;
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} else {
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status = NT_STATUS_OK;
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}
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talloc_free(c);
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return status;
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}
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