| 0,0 → 1,157 |
|---|
| /* |
| * Copyright (c) 2007 Jakub Jermar |
| * 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 libc |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #include <vfs.h> |
| #include <ipc/ipc.h> |
| #include <ipc/services.h> |
| #include <async.h> |
| #include <atomic.h> |
| #include <futex.h> |
| #include <errno.h> |
| #include <string.h> |
| #include "../../srv/vfs/vfs.h" |
| |
| int vfs_phone = -1; |
| atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
| |
| static int vfs_connect(void) |
| { |
| if (vfs_phone < 0) |
| vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
| return vfs_phone; |
| } |
| |
| int mount(const char *fs_name, const char *mp, const char *dev) |
| { |
| int res; |
| ipcarg_t rc; |
| aid_t req; |
| |
| int dev_handle = 0; /* TODO */ |
| |
| futex_down(&vfs_phone_futex); |
| async_serialize_start(); |
| if (vfs_phone < 0) { |
| res = vfs_connect(); |
| if (res < 0) { |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return res; |
| } |
| } |
| req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
| rc = ipc_data_write_send(vfs_phone, (void *)fs_name, strlen(fs_name)); |
| if (rc != EOK) { |
| async_wait_for(req, NULL); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (int) rc; |
| } |
| rc = ipc_data_write_send(vfs_phone, (void *)mp, strlen(mp)); |
| if (rc != EOK) { |
| async_wait_for(req, NULL); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (int) rc; |
| } |
| async_wait_for(req, &rc); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (int) rc; |
| } |
| |
| |
| int open(const char *name, int oflag, ...) |
| { |
| int res; |
| ipcarg_t rc; |
| ipc_call_t answer; |
| aid_t req; |
| |
| futex_down(&vfs_phone_futex); |
| async_serialize_start(); |
| if (vfs_phone < 0) { |
| res = vfs_connect(); |
| if (res < 0) { |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return res; |
| } |
| } |
| req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
| rc = ipc_data_write_send(vfs_phone, name, strlen(name)); |
| if (rc != EOK) { |
| async_wait_for(req, NULL); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (int) rc; |
| } |
| async_wait_for(req, &rc); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (int) IPC_GET_ARG1(answer); |
| } |
| |
| ssize_t read(int fildes, void *buf, size_t nbyte) |
| { |
| int res; |
| ipcarg_t rc; |
| ipc_call_t answer; |
| aid_t req; |
| |
| futex_down(&vfs_phone_futex); |
| async_serialize_start(); |
| if (vfs_phone < 0) { |
| res = vfs_connect(); |
| if (res < 0) { |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return res; |
| } |
| } |
| req = async_send_1(vfs_phone, VFS_READ, 0, &answer); |
| if (ipc_data_read_send(vfs_phone, buf, sizeof(buf)) != EOK) { |
| async_wait_for(req, NULL); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (ssize_t) rc; |
| } |
| async_wait_for(req, &rc); |
| async_serialize_end(); |
| futex_up(&vfs_phone_futex); |
| return (ssize_t) IPC_GET_ARG1(answer); |
| } |
| |
| /** @} |
| */ |