source: mainline/uspace/srv/ns/ns.c@ 76f566d

/*
 * Copyright (c) 2006 Ondrej Palkovsky
 * 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 ns
 * @{
 */

/**
 * @file  ns.c
 * @brief Naming service for HelenOS IPC.
 */

#include <abi/ipc/methods.h>
#include <async.h>
#include <ipc/ns.h>
#include <ipc/services.h>
#include <abi/ipc/interfaces.h>
#include <stdio.h>
#include <errno.h>
#include <macros.h>
#include "ns.h"
#include "service.h"
#include "clonable.h"
#include "task.h"

static void ns_connection(cap_call_handle_t icall_handle, ipc_call_t *icall, void *arg)
{
        ipc_call_t call;
        cap_call_handle_t chandle;
        iface_t iface;
        service_t service;

        iface = IPC_GET_ARG1(*icall);
        service = IPC_GET_ARG2(*icall);
        if (service != 0) {
                /*
                 * Client requests to be connected to a service.
                 */
                if (service_clonable(service)) {
                        connect_to_clonable(service, iface, icall, icall_handle);
                } else {
                        connect_to_service(service, iface, icall, icall_handle);
                }
                return;
        }

        async_answer_0(icall_handle, EOK);

        while (true) {
                process_pending_conn();

                chandle = async_get_call(&call);
                if (!IPC_GET_IMETHOD(call))
                        break;

                task_id_t id;
                errno_t retval;

                service_t service;
                sysarg_t phone;

                switch (IPC_GET_IMETHOD(call)) {
                case NS_REGISTER:
                        service = IPC_GET_ARG1(call);
                        phone = IPC_GET_ARG5(call);

                        /*
                         * Server requests service registration.
                         */
                        if (service_clonable(service)) {
                                register_clonable(service, phone, &call, chandle);
                                continue;
                        } else {
                                retval = register_service(service, phone, &call);
                        }

                        break;
                case NS_PING:
                        retval = EOK;
                        break;
                case NS_TASK_WAIT:
                        id = (task_id_t)
                            MERGE_LOUP32(IPC_GET_ARG1(call), IPC_GET_ARG2(call));
                        wait_for_task(id, &call, chandle);
                        continue;
                case NS_ID_INTRO:
                        retval = ns_task_id_intro(&call);
                        break;
                case NS_RETVAL:
                        retval = ns_task_retval(&call);
                        break;
                default:
                        printf("ns: method not supported\n");
                        retval = ENOTSUP;
                        break;
                }

                async_answer_0(chandle, retval);
        }

        (void) ns_task_disconnect(&call);
}

int main(int argc, char **argv)
{
        printf("%s: HelenOS IPC Naming Service\n", NAME);

        errno_t rc = service_init();
        if (rc != EOK)
                return rc;

        rc = clonable_init();
        if (rc != EOK)
                return rc;

        rc = task_init();
        if (rc != EOK)
                return rc;

        async_set_fallback_port_handler(ns_connection, NULL);

        printf("%s: Accepting connections\n", NAME);
        async_manager();

        /* Not reached */
        return 0;
}

/**
 * @}
 */