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2518 jermar 1 
/*
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 * Copyright (c) 2007 Jakub Jermar
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 * All rights reserved.
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 *
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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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 * are met:
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 *
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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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 * - 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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 *   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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 *   derived from this software without specific prior written permission.
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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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 * 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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 * 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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 * 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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 * 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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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup fs
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 * @{
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 */
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/**
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 * @file    vfs.c
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 * @brief   VFS multiplexer for HelenOS.
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 */
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2520 jermar 38 
#include <ipc/ipc.h>
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#include <ipc/services.h>
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#include <async.h>
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#include <errno.h>
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#include <stdio.h>
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#include <bool.h>
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#include <libadt/list.h>
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#include "vfs.h"
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#define dprintf(...)    printf(__VA_ARGS__)
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static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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{
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    bool keep_on_going = 1;
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    printf("Connection opened from %p\n", icall->in_phone_hash);
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    /*
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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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     */
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    ipc_answer_fast(iid, EOK, 0, 0);
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    /*
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     * Here we enter the main connection fibril loop.
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     * The logic behind this loop and the protocol is that we'd like to keep
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     * each connection open for a while before we close it. The benefit of
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     * this is that the client doesn't have to establish a new connection
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     * upon each request.  On the other hand, the client must be ready to
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     * re-establish a connection if we hang it up due to reaching of maximum
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     * number of requests per connection or due to the client timing out.
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     */
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    while (keep_on_going) {
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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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        printf("Received call, method=%d\n", IPC_GET_METHOD(call));
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        switch (IPC_GET_METHOD(call)) {
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        case IPC_M_PHONE_HUNGUP:
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            keep_on_going = false;
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            break;
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        case VFS_REGISTER:
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            vfs_register(callid, &call);
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            keep_on_going = false;
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            break;
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        case VFS_MOUNT:
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        case VFS_UNMOUNT:
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        case VFS_OPEN:
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        case VFS_CREATE:
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        case VFS_CLOSE:
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        case VFS_READ:
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        case VFS_WRITE:
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        case VFS_SEEK:
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        default:
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            ipc_answer_fast(callid, ENOTSUP, 0, 0);
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            break;
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        }
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    }
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    /* TODO: cleanup after the client */
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}
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int main(int argc, char **argv)
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{
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    ipcarg_t phonead;
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2532 jermar 109 
    printf("VFS: HelenOS VFS server\n");
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2526 jermar 111 
    list_initialize(&fs_head);
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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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    async_manager();
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    return 0;
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}
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/**
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 * @}
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 */