Rev 4581 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4417 | decky | 1 | /* |
| 2 | * Copyright (c) 2009 Martin Decky |
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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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| 4464 | decky | 31 | */ |
| 4417 | decky | 32 | |
| 33 | /** |
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| 34 | * @file devfs.c |
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| 35 | * @brief Devices file system. |
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| 36 | * |
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| 37 | * Every device registered to device mapper is represented as a file in this |
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| 38 | * file system. |
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| 39 | */ |
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| 40 | |||
| 41 | #include <stdio.h> |
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| 42 | #include <ipc/ipc.h> |
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| 43 | #include <ipc/services.h> |
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| 44 | #include <async.h> |
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| 45 | #include <errno.h> |
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| 46 | #include <libfs.h> |
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| 47 | #include "devfs.h" |
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| 48 | #include "devfs_ops.h" |
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| 49 | |||
| 50 | #define NAME "devfs" |
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| 51 | |||
| 52 | static vfs_info_t devfs_vfs_info = { |
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| 53 | .name = "devfs", |
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| 54 | }; |
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| 55 | |||
| 56 | fs_reg_t devfs_reg; |
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| 57 | |||
| 58 | static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall) |
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| 59 | { |
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| 60 | if (iid) |
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| 61 | ipc_answer_0(iid, EOK); |
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| 62 | |||
| 63 | while (true) { |
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| 64 | ipc_call_t call; |
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| 65 | ipc_callid_t callid = async_get_call(&call); |
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| 66 | |||
| 67 | switch (IPC_GET_METHOD(call)) { |
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| 4562 | jermar | 68 | case IPC_M_PHONE_HUNGUP: |
| 69 | return; |
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| 4718 | mejdrech | 70 | case VFS_OUT_MOUNTED: |
| 4417 | decky | 71 | devfs_mounted(callid, &call); |
| 72 | break; |
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| 4718 | mejdrech | 73 | case VFS_OUT_MOUNT: |
| 4417 | decky | 74 | devfs_mount(callid, &call); |
| 75 | break; |
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| 4718 | mejdrech | 76 | case VFS_OUT_LOOKUP: |
| 4417 | decky | 77 | devfs_lookup(callid, &call); |
| 78 | break; |
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| 4718 | mejdrech | 79 | case VFS_OUT_OPEN_NODE: |
| 4464 | decky | 80 | devfs_open_node(callid, &call); |
| 81 | break; |
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| 4718 | mejdrech | 82 | case VFS_OUT_STAT: |
| 83 | devfs_stat(callid, &call); |
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| 4464 | decky | 84 | break; |
| 4718 | mejdrech | 85 | case VFS_OUT_READ: |
| 4417 | decky | 86 | devfs_read(callid, &call); |
| 87 | break; |
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| 4718 | mejdrech | 88 | case VFS_OUT_WRITE: |
| 4417 | decky | 89 | devfs_write(callid, &call); |
| 90 | break; |
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| 4718 | mejdrech | 91 | case VFS_OUT_TRUNCATE: |
| 4417 | decky | 92 | devfs_truncate(callid, &call); |
| 93 | break; |
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| 4718 | mejdrech | 94 | case VFS_OUT_CLOSE: |
| 4464 | decky | 95 | devfs_close(callid, &call); |
| 96 | break; |
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| 4718 | mejdrech | 97 | case VFS_OUT_SYNC: |
| 4464 | decky | 98 | devfs_sync(callid, &call); |
| 99 | break; |
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| 4718 | mejdrech | 100 | case VFS_OUT_DESTROY: |
| 4417 | decky | 101 | devfs_destroy(callid, &call); |
| 102 | break; |
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| 103 | default: |
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| 104 | ipc_answer_0(callid, ENOTSUP); |
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| 105 | break; |
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| 106 | } |
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| 107 | } |
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| 108 | } |
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| 109 | |||
| 110 | int main(int argc, char *argv[]) |
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| 111 | { |
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| 112 | printf(NAME ": HelenOS Device Filesystem\n"); |
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| 113 | |||
| 114 | if (!devfs_init()) { |
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| 115 | printf(NAME ": failed to initialize devfs\n"); |
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| 116 | return -1; |
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| 117 | } |
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| 118 | |||
| 119 | int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0); |
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| 120 | if (vfs_phone < EOK) { |
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| 121 | printf(NAME ": Unable to connect to VFS\n"); |
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| 122 | return -1; |
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| 123 | } |
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| 124 | |||
| 125 | int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info, |
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| 126 | devfs_connection); |
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| 127 | if (rc != EOK) { |
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| 128 | printf(NAME ": Failed to register file system (%d)\n", rc); |
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| 129 | return rc; |
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| 130 | } |
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| 131 | |||
| 132 | printf(NAME ": Accepting connections\n"); |
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| 133 | async_manager(); |
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| 134 | |||
| 135 | /* Not reached */ |
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| 136 | return 0; |
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| 137 | } |
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| 138 | |||
| 4464 | decky | 139 | /** |
| 4417 | decky | 140 | * @} |
| 141 | */ |