0,0 → 1,127 |
/* |
* 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 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_READ: |
devfs_read(callid, &call); |
break; |
case VFS_WRITE: |
devfs_write(callid, &call); |
break; |
case VFS_TRUNCATE: |
devfs_truncate(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; |
} |
|
/** |
* @} |
*/ |