| 444,7 → 444,7 |
|---|
| */ |
| |
| int fd = IPC_GET_ARG1(*request); |
| |
| |
| /* Lookup the file structure corresponding to the file descriptor. */ |
| vfs_file_t *file = vfs_file_get(fd); |
| if (!file) { |
| 451,7 → 451,7 |
|---|
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| |
| |
| /* |
| * Now we need to receive a call with client's |
| * IPC_M_DATA_READ/IPC_M_DATA_WRITE request. |
| 467,13 → 467,13 |
|---|
| ipc_answer_0(rid, EINVAL); |
| return; |
| } |
| |
| |
| /* |
| * Lock the open file structure so that no other thread can manipulate |
| * the same open file at a time. |
| */ |
| futex_down(&file->lock); |
| |
| |
| /* |
| * Lock the file's node so that no other client can read/write to it at |
| * the same time. |
| 482,7 → 482,7 |
|---|
| rwlock_read_lock(&file->node->contents_rwlock); |
| else |
| rwlock_write_lock(&file->node->contents_rwlock); |
| |
| |
| int fs_phone = vfs_grab_phone(file->node->fs_handle); |
| |
| /* Make a VFS_READ/VFS_WRITE request at the destination FS server. */ |
| 500,14 → 500,14 |
|---|
| * don't have to bother. |
| */ |
| ipc_forward_fast(callid, fs_phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
| |
| |
| vfs_release_phone(fs_phone); |
| |
| |
| /* Wait for reply from the FS server. */ |
| ipcarg_t rc; |
| async_wait_for(msg, &rc); |
| size_t bytes = IPC_GET_ARG1(answer); |
| |
| |
| /* Unlock the VFS node. */ |
| if (read) |
| rwlock_read_unlock(&file->node->contents_rwlock); |
| 517,12 → 517,12 |
|---|
| file->node->size = IPC_GET_ARG2(answer); |
| rwlock_write_unlock(&file->node->contents_rwlock); |
| } |
| |
| |
| /* Update the position pointer and unlock the open file. */ |
| if (rc == EOK) |
| file->pos += bytes; |
| futex_up(&file->lock); |
| |
| |
| /* |
| * FS server's reply is the final result of the whole operation we |
| * return to the client. |