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/*
Unix SMB/CIFS implementation.
composite request interfaces
Copyright (C) Andrew Tridgell 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
this defines the structures associated with "composite"
requests. Composite requests are libcli requests that are internally
implemented as multiple async calls, but can be treated as a
single call via these composite calls. The composite calls are
particularly designed to be used in async applications.
you can also stack multiple level of composite call
*/
/*
a composite call moves between the following 3 states.
*/
enum composite_state { COMPOSITE_STATE_INIT, /* we are creating the request */
COMPOSITE_STATE_IN_PROGRESS, /* the request is in the outgoing socket Q */
COMPOSITE_STATE_DONE, /* the request is received by the caller finished */
COMPOSITE_STATE_ERROR }; /* a packet or transport level error has occurred */
/* the context of one "composite" call */
struct composite_context {
/* the external state - will be queried by the caller */
enum composite_state state;
/* a private pointer for use by the composite function
implementation */
void *private_data;
/* status code when finished */
NTSTATUS status;
/* the event context we are using */
struct event_context *event_ctx;
/* information on what to do on completion */
struct {
void (*fn)(struct composite_context *);
void *private_data;
} async;
};
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