| 1 | /*
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| 2 | * Copyright (c) 2007 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup fs
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| 30 | * @{
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| 31 | */
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| 32 |
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| 33 | /**
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| 34 | * @file vfs.c
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| 35 | * @brief VFS multiplexer for HelenOS.
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| 36 | */
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| 37 |
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| 38 | #include <ipc/ipc.h>
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| 39 | #include <ipc/services.h>
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| 40 | #include <async.h>
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| 41 | #include <errno.h>
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| 42 | #include "vfs.h"
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| 43 |
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| 44 | static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall)
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| 45 | {
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| 46 | ipcarg_t iarg1, iarg2;
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| 47 |
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| 48 | /*
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| 49 | * The connection was opened via the IPC_CONNECT_ME_TO call.
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| 50 | * This call needs to be answered.
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| 51 | *
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| 52 | * The protocol is that the requested action is specified in ARG1
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| 53 | * of the opening call. If the request has a single integer argument,
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| 54 | * it is passed in ARG2.
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| 55 | */
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| 56 | iarg1 = IPC_GET_ARG1(*icall);
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| 57 | iarg2 = IPC_GET_ARG2(*icall);
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| 58 |
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| 59 | /*
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| 60 | * Now, the connection can either be from an individual FS,
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| 61 | * which is trying to register itself and pass us its capabilities.
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| 62 | * Or, the connection is a regular connection from a client that wants
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| 63 | * us to do something for it (e.g. open a file, mount a fs etc.).
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| 64 | */
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| 65 | switch (iarg1) {
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| 66 | case VFS_REGISTER:
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| 67 | case VFS_MOUNT:
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| 68 | case VFS_UNMOUNT:
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| 69 | case VFS_OPEN:
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| 70 | default:
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| 71 | ipc_answer_fast(iid, ENOTSUP, 0, 0);
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| 72 | break;
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | int main(int argc, char **argv)
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| 77 | {
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| 78 | ipcarg_t phonead;
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| 79 |
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| 80 | async_set_client_connection(vfs_connection);
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| 81 | ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, &phonead);
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| 82 | async_manager();
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| 83 | return 0;
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| 84 | }
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| 85 |
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| 86 | /**
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| 87 | * @}
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| 88 | */
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