| 0,0 → 1,141 |
|---|
| /* |
| * Copyright (c) 2009 Martin Decky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** @addtogroup fs |
| * @{ |
| */ |
| |
| /** |
| * @file devfs.c |
| * @brief Devices file system. |
| * |
| * Every device registered to device mapper is represented as a file in this |
| * file system. |
| */ |
| |
| #include <stdio.h> |
| #include <ipc/ipc.h> |
| #include <ipc/services.h> |
| #include <async.h> |
| #include <errno.h> |
| #include <libfs.h> |
| #include "devfs.h" |
| #include "devfs_ops.h" |
| |
| #define NAME "devfs" |
| |
| static vfs_info_t devfs_vfs_info = { |
| .name = "devfs", |
| }; |
| |
| fs_reg_t devfs_reg; |
| |
| static void devfs_connection(ipc_callid_t iid, ipc_call_t *icall) |
| { |
| if (iid) |
| ipc_answer_0(iid, EOK); |
| |
| while (true) { |
| ipc_call_t call; |
| ipc_callid_t callid = async_get_call(&call); |
| |
| switch (IPC_GET_METHOD(call)) { |
| case IPC_M_PHONE_HUNGUP: |
| return; |
| case VFS_MOUNTED: |
| devfs_mounted(callid, &call); |
| break; |
| case VFS_MOUNT: |
| devfs_mount(callid, &call); |
| break; |
| case VFS_LOOKUP: |
| devfs_lookup(callid, &call); |
| break; |
| case VFS_OPEN_NODE: |
| devfs_open_node(callid, &call); |
| break; |
| case VFS_DEVICE: |
| devfs_device(callid, &call); |
| break; |
| case VFS_READ: |
| devfs_read(callid, &call); |
| break; |
| case VFS_WRITE: |
| devfs_write(callid, &call); |
| break; |
| case VFS_TRUNCATE: |
| devfs_truncate(callid, &call); |
| break; |
| case VFS_CLOSE: |
| devfs_close(callid, &call); |
| break; |
| case VFS_SYNC: |
| devfs_sync(callid, &call); |
| break; |
| case VFS_DESTROY: |
| devfs_destroy(callid, &call); |
| break; |
| default: |
| ipc_answer_0(callid, ENOTSUP); |
| break; |
| } |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| printf(NAME ": HelenOS Device Filesystem\n"); |
| |
| if (!devfs_init()) { |
| printf(NAME ": failed to initialize devfs\n"); |
| return -1; |
| } |
| |
| int vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0); |
| if (vfs_phone < EOK) { |
| printf(NAME ": Unable to connect to VFS\n"); |
| return -1; |
| } |
| |
| int rc = fs_register(vfs_phone, &devfs_reg, &devfs_vfs_info, |
| devfs_connection); |
| if (rc != EOK) { |
| printf(NAME ": Failed to register file system (%d)\n", rc); |
| return rc; |
| } |
| |
| printf(NAME ": Accepting connections\n"); |
| async_manager(); |
| |
| /* Not reached */ |
| return 0; |
| } |
| |
| /** |
| * @} |
| */ |