/*
   Unix SMB/CIFS implementation.
   NTSTATUS wrappers for async_req.h
   Copyright (C) Volker Lendecke 2008, 2009

   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 3 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, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "lib/tevent/tevent.h"
#include "lib/talloc/talloc.h"
#include "lib/util/dlinklist.h"
#include "lib/async_req/async_req_ntstatus.h"

/**
 * @brief Helper function for nomem check
 * @param[in] p		The pointer to be checked
 * @param[in] req	The request being processed
 *
 * Convenience helper to easily check alloc failure within a callback
 * implementing the next step of an async request.
 *
 * Call pattern would be
 * \code
 * p = talloc(mem_ctx, bla);
 * if (async_req_ntnomem(p, req)) {
 *	return;
 * }
 * \endcode
 */

bool async_req_ntnomem(const void *p, struct async_req *req)
{
	if (p != NULL) {
		return false;
	}
	async_req_nterror(req, NT_STATUS_NO_MEMORY);
	return true;
}

void async_req_nterror(struct async_req *req, NTSTATUS status)
{
	async_req_error(req, NT_STATUS_V(status));
}

bool async_post_ntstatus(struct async_req *req, struct tevent_context *ev,
			 NTSTATUS status)
{
	return async_post_error(req, ev, NT_STATUS_V(status));
}

bool async_req_is_nterror(struct async_req *req, NTSTATUS *status)
{
	uint32_t error = NT_STATUS_V(NT_STATUS_INTERNAL_ERROR);

	if (async_req_is_error(req, &error)) {
		*status = NT_STATUS(error);
		return true;
	}
	return false;
}

NTSTATUS async_req_simple_recv_ntstatus(struct async_req *req)
{
	NTSTATUS status;

	if (async_req_is_nterror(req, &status)) {
		return status;
	}
	return NT_STATUS_OK;
}