source: mainline/kernel/generic/src/ipc/ops/concttome.c@ a53ed3a

/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * Copyright (c) 2012 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup genericipc
 * @{
 */
/** @file
 */

#include <ipc/sysipc_ops.h>
#include <ipc/ipc.h>
#include <ipc/ipcrsc.h>
#include <abi/errno.h>
#include <arch.h>

static int request_process(call_t *call, answerbox_t *box)
{
        cap_handle_t phone_handle;
        errno_t rc = phone_alloc(TASK, &phone_handle);
        IPC_SET_ARG5(call->data, (rc == EOK) ? phone_handle : -1);
        return 0;
}

static errno_t answer_cleanup(call_t *answer, ipc_data_t *olddata)
{
        cap_handle_t phone_handle = (cap_handle_t) IPC_GET_ARG5(*olddata);

        if (phone_handle >= 0)
                phone_dealloc(phone_handle);

        return EOK;
}

static errno_t answer_preprocess(call_t *answer, ipc_data_t *olddata)
{
        cap_handle_t phone_handle = (cap_handle_t) IPC_GET_ARG5(*olddata);

        if (IPC_GET_RETVAL(answer->data) != EOK) {
                /* The connection was not accepted */
                answer_cleanup(answer, olddata);
        } else if (phone_handle >= 0) {
                /* The connection was accepted */
                if (phone_connect(phone_handle, &answer->sender->answerbox)) {
                        /* Set 'phone hash' as ARG5 of response */
                        kobject_t *phone_obj = kobject_get(TASK, phone_handle,
                            KOBJECT_TYPE_PHONE);
                        IPC_SET_ARG5(answer->data,
                            (sysarg_t) phone_obj->phone);
                        kobject_put(phone_obj);
                } else {
                        /* The answerbox is shutting down. */
                        IPC_SET_RETVAL(answer->data, ENOENT);
                        answer_cleanup(answer, olddata);
                }
        } else {
                IPC_SET_RETVAL(answer->data, ELIMIT);
        }

        return EOK;
}


sysipc_ops_t ipc_m_connect_to_me_ops = {
        .request_preprocess = null_request_preprocess,
        .request_forget = null_request_forget,
        .request_process = request_process,
        .answer_cleanup = answer_cleanup,
        .answer_preprocess = answer_preprocess,
        .answer_process = null_answer_process,
};

/** @}
 */