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/*
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/*
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 * Copyright (c) 2007 Jakub Jermar
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 * Copyright (c) 2007 Jakub Jermar
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 * All rights reserved.
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 * All rights reserved.
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 *
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * are met:
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 *
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 *
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 * - Redistributions of source code must retain the above copyright
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *   derived from this software without specific prior written permission.
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 *
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/** @addtogroup fs
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/** @addtogroup fs
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 * @{
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 * @{
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 */
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 */
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/**
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/**
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 * @file    vfs.c
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 * @file    vfs.c
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 * @brief   VFS multiplexer for HelenOS.
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 * @brief   VFS multiplexer for HelenOS.
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 */
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 */
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#include <ipc/ipc.h>
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#include <ipc/ipc.h>
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#include <ipc/services.h>
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#include <ipc/services.h>
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#include <async.h>
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#include <async.h>
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#include <errno.h>
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#include <errno.h>
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#include "vfs.h"
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#include "vfs.h"
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static void vfs_register(ipc_callid_t iid, ipc_call_t *icall)
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{
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    ipc_callid_t callid;
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    ipc_call_t call;
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    callid = async_get_call(&call);
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    if (IPC_GET_METHOD(call) == IPC_M_DATA_SEND) {
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        size_t size = IPC_GET_ARG3(call);
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        if (size != sizeof(vfs_info_t)) {
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            /*
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             * The client is sending us something, which cannot be
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             * the info structure.
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             */
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            ipc_answer_fast(iid, EINVAL, 0, 0);
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            ipc_answer_fast(callid, EINVAL, 0, 0);
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            return;
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        }
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        /*
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         * XXX: continue here
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         * Allocate an info structue, answer the call, check sanity
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         * of the copied-in info structure, ...
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         */
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    } else {
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        /*
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         * The client doesn't obey the same protocol as we do.
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         */
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        ipc_answer_fast(iid, EINVAL, 0, 0);
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        ipc_answer_fast(callid, EINVAL, 0, 0);
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        return;
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    }
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}
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static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
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{
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    ipcarg_t iarg1, iarg2;
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    ipcarg_t iarg1, iarg2;
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    /*
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    /*
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     * The connection was opened via the IPC_CONNECT_ME_TO call.
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     * The connection was opened via the IPC_CONNECT_ME_TO call.
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     * This call needs to be answered.
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     * This call needs to be answered.
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     *
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     *
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     * The protocol is that the requested action is specified in ARG1
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     * The protocol is that the requested action is specified in ARG1
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     * of the opening call. If the request has a single integer argument,
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     * of the opening call. If the request has a single integer argument,
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     * it is passed in ARG2.
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     * it is passed in ARG2.
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     */
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     */
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    iarg1 = IPC_GET_ARG1(*icall);
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    iarg1 = IPC_GET_ARG1(*icall);
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    iarg2 = IPC_GET_ARG2(*icall);
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    iarg2 = IPC_GET_ARG2(*icall);
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    /*
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    /*
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     * Now, the connection can either be from an individual FS,
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     * Now, the connection can either be from an individual FS,
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     * which is trying to register itself and pass us its capabilities.
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     * which is trying to register itself and pass us its capabilities.
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     * Or, the connection is a regular connection from a client that wants
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     * Or, the connection is a regular connection from a client that wants
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     * us to do something for it (e.g. open a file, mount a fs etc.).
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     * us to do something for it (e.g. open a file, mount a fs etc.).
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     */
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     */
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    switch (iarg1) {
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    switch (iarg1) {
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    case VFS_REGISTER:
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    case VFS_REGISTER:
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        vfs_register(iid, icall);
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        break;
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    case VFS_MOUNT:
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    case VFS_MOUNT:
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    case VFS_UNMOUNT:
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    case VFS_UNMOUNT:
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    case VFS_OPEN:
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    case VFS_OPEN:
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    default:
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    default:
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        ipc_answer_fast(iid, ENOTSUP, 0, 0);
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        ipc_answer_fast(iid, ENOTSUP, 0, 0);
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        break;
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        break;
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    }
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    }
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}
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}
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int main(int argc, char **argv)
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int main(int argc, char **argv)
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{
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{
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    ipcarg_t phonead;
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    ipcarg_t phonead;
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    async_set_client_connection(vfs_connection);
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    async_set_client_connection(vfs_connection);
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    ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, &phonead);
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    ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, &phonead);
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    async_manager();
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    async_manager();
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    return 0;
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    return 0;
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}
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}
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/**
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/**
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 * @}
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 * @}
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 */
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 */
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