小编Scr*_*own的帖子

首先,我不得不说我对Android开发非常新,所以如果我忽略了一些明显的东西,请原谅我.

对于大学项目,我必须创建一个应用程序,首先使用Firebase通过其Google帐户对用户进行身份验证.我先按照我在这里找到的说明进行操作.

首先,我从Firebase Tutorial复制粘贴此代码.一切似乎都在起作用,除了一件事:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.d(TAG, "------------------ onActivityResult ------------------");
    super.onActivityResult(requestCode, resultCode, data);

    // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
    if (requestCode == RC_SIGN_IN) {
        GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
        if (result.isSuccess()) {
            Log.d(TAG, "------------------ googleSignInSuccess ------------------");
            // Google Sign In was successful, authenticate with Firebase
            GoogleSignInAccount account = result.getSignInAccount();
            firebaseAuthWithGoogle(account);
            // Start menu activity once the user has been logged in
            Intent intent = …

我定义了以下数据类：

"""This module declares the SubtitleItem dataclass."""

import re

from dataclasses import dataclass
from time_utils import Timestamp

@dataclass
class SubtitleItem:
    """Class for storing all the information for
    a subtitle item."""
    index: int
    start_time: Timestamp
    end_time: Timestamp
    text: str

    @staticmethod
    def load_from_text_item(text_item: str) -> "SubtitleItem":
        """Create new subtitle item from their .srt file text.

        Example, if your .srt file contains the following subtitle item:

        ```
        3
        00:00:05,847 --> 00:00:06,916
        The robot.
        ```

        This function will return:

        ```
        SubtitleItem(
            index=3,
            start_time=Timestamp(seconds=5, milliseconds=847), …

为了完成家庭作业，我必须修改 Linux 内核。

我正在虚拟机上工作，我向内核添加了一个系统调用，我将其称为get_unique_id. 这是代码get_unique_id.c：

#include <linux/linkage.h>\n#include <asm/uaccess.h>\n\nasmlinkage long sys_get_unique_id(int * uuid)\n{\n    // static because we want its state to persist between calls\n    static int uid = 0;\n\n    ++uid;\n\n    // assign new uid value to user-provided mem location\n    // returns non-zero if success or -EFAULT otherwise\n    int ret = put_user(uid, uuid);\n    return ret;\n}\n

我还将这一行添加到syscalls.h：

asmlinkage long sys_get_unique_id(int * uuid);\n

这一行到 syscall_32.tbl ：

383 i386    get_unique_id       sys_get_unique_id\n

最后这一行 …