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| Rev | Author | Line No. | Line |
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| 2518 | jermar | 1 | /* |
| 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 | |||
| 29 | /** @addtogroup fs |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | |||
| 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 | |||
| 2520 | jermar | 38 | #include <ipc/ipc.h> |
| 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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| 2532 | jermar | 42 | #include <stdio.h> |
| 2523 | jermar | 43 | #include <bool.h> |
| 2526 | jermar | 44 | #include <libadt/list.h> |
| 2520 | jermar | 45 | #include "vfs.h" |
| 46 | |||
| 2532 | jermar | 47 | #define dprintf(...) printf(__VA_ARGS__) |
| 48 | |||
| 2520 | jermar | 49 | static void vfs_connection(ipc_callid_t iid, ipc_call_t *icall) |
| 50 | { |
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| 2523 | jermar | 51 | bool keep_on_going = 1; |
| 2520 | jermar | 52 | |
| 2532 | jermar | 53 | printf("Connection opened from %p\n", icall->in_phone_hash); |
| 54 | |||
| 2520 | jermar | 55 | /* |
| 56 | * The connection was opened via the IPC_CONNECT_ME_TO call. |
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| 57 | * This call needs to be answered. |
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| 58 | */ |
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| 2523 | jermar | 59 | ipc_answer_fast(iid, EOK, 0, 0); |
| 2520 | jermar | 60 | |
| 61 | /* |
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| 2523 | jermar | 62 | * Here we enter the main connection fibril loop. |
| 63 | * The logic behind this loop and the protocol is that we'd like to keep |
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| 64 | * each connection open for a while before we close it. The benefit of |
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| 65 | * this is that the client doesn't have to establish a new connection |
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| 66 | * upon each request. On the other hand, the client must be ready to |
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| 67 | * re-establish a connection if we hang it up due to reaching of maximum |
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| 68 | * number of requests per connection or due to the client timing out. |
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| 2520 | jermar | 69 | */ |
| 2523 | jermar | 70 | |
| 71 | while (keep_on_going) { |
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| 72 | ipc_callid_t callid; |
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| 73 | ipc_call_t call; |
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| 74 | |||
| 75 | callid = async_get_call(&call); |
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| 2532 | jermar | 76 | |
| 77 | printf("Received call, method=%d\n", IPC_GET_METHOD(call)); |
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| 2523 | jermar | 78 | |
| 79 | switch (IPC_GET_METHOD(call)) { |
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| 80 | case IPC_M_PHONE_HUNGUP: |
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| 81 | keep_on_going = false; |
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| 82 | break; |
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| 83 | case VFS_REGISTER: |
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| 84 | vfs_register(callid, &call); |
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| 85 | keep_on_going = false; |
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| 86 | break; |
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| 87 | case VFS_MOUNT: |
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| 88 | case VFS_UNMOUNT: |
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| 89 | case VFS_OPEN: |
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| 90 | case VFS_CREATE: |
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| 91 | case VFS_CLOSE: |
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| 92 | case VFS_READ: |
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| 93 | case VFS_WRITE: |
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| 94 | case VFS_SEEK: |
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| 95 | default: |
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| 96 | ipc_answer_fast(callid, ENOTSUP, 0, 0); |
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| 97 | break; |
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| 98 | } |
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| 2520 | jermar | 99 | } |
| 2523 | jermar | 100 | |
| 101 | /* TODO: cleanup after the client */ |
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| 102 | |||
| 2520 | jermar | 103 | } |
| 104 | |||
| 2518 | jermar | 105 | int main(int argc, char **argv) |
| 106 | { |
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| 2520 | jermar | 107 | ipcarg_t phonead; |
| 108 | |||
| 2532 | jermar | 109 | printf("VFS: HelenOS VFS server\n"); |
| 110 | |||
| 2526 | jermar | 111 | list_initialize(&fs_head); |
| 2520 | jermar | 112 | async_set_client_connection(vfs_connection); |
| 113 | ipc_connect_to_me(PHONE_NS, SERVICE_VFS, 0, &phonead); |
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| 114 | async_manager(); |
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| 2518 | jermar | 115 | return 0; |
| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * @} |
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| 120 | */ |