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atom.xml
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<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<title>SmallTalk</title>
<subtitle>Stay Hungry, Stay Foolish.</subtitle>
<link href="https://wanix1988.github.io/atom.xml" rel="self"/>
<link href="https://wanix1988.github.io/"/>
<updated>2024-06-29T14:28:54.736Z</updated>
<id>https://wanix1988.github.io/</id>
<author>
<name>wanix1988</name>
</author>
<generator uri="https://hexo.io/">Hexo</generator>
<entry>
<title>Linux(Kali)安装Mysql(MariaDB)</title>
<link href="https://wanix1988.github.io/2024/06/29/Linux-Kali-%E5%AE%89%E8%A3%85Mysql-MariaDB/"/>
<id>https://wanix1988.github.io/2024/06/29/Linux-Kali-%E5%AE%89%E8%A3%85Mysql-MariaDB/</id>
<published>2024-06-29T13:37:27.000Z</published>
<updated>2024-06-29T14:28:54.736Z</updated>
<content type="html"><![CDATA[<h1 id="情景说明"><a href="#情景说明" class="headerlink" title="情景说明"></a>情景说明</h1><p>因业务需要开展Linux系统内存优化，需要将所有数据源采集后存入数据库，方便后续查询和分析，以及可视化。先在PC上安装MySQL，进行建表和开发过程。</p><h1 id="安装过程"><a href="#安装过程" class="headerlink" title="安装过程"></a>安装过程</h1><ol><li><p>使用apt安装mysql-server</p><blockquote><p>sudo apt install mysql-server</p></blockquote></li><li><p>使用apt安装的MySQL已经完成了启动和自启动，无需使用systemctl enable/start，可以使用下面的命令来启动/停止/查看状态</p> <figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">sudo service mysql status # 查看服务状态</span><br><span class="line">sudo service mysql start # 启动服务</span><br><span class="line">sudo service mysql stop # 停止服务</span><br><span class="line">sudo service mysql restart # 重启服务</span><br></pre></td></tr></table></figure></li><li><p>安装完成后的MySQL还需要进行设置才能使用，否则无法连接上</p><blockquote><p>sudo mysql_secure_installation</p></blockquote><p>按照步骤输入安装密码，进行选择，完成安装</p></li><li><p>使用客户端测试连接<br><img src="Navicat-MySQL-Test-Connection.png" alt="Navicat测试MySQL连接"></p></li></ol><h1 id="错误及其解决方法"><a href="#错误及其解决方法" class="headerlink" title="错误及其解决方法"></a>错误及其解决方法</h1><ol><li>Q: 1698 - Access denied for user ‘root‘@’localhost’<br>A: 执行下面的命令设置密码，注意密码要符合policy要求，否则无法设置成功<blockquote><p>sudo mysql -u root<br>ALTER USER ‘root‘@’localhost’ IDENTIFIED WITH mysql_native_password BY ‘test’; </p></blockquote></li></ol><ol start="2"><li>Q: ERROR 1819 (HY000): Your password does not satisfy the current policy requirements<br>A: 密码不符合要求，需要符合policy的要求</li></ol><ol start="3"><li>Q: ERROR 1045 (28000): Access denied for user ‘root‘@’localhost’ (using password: YES)<br>A: 需要按照#1的方法设置密码后重新连接</li></ol><h1 id="参考资料"><a href="#参考资料" class="headerlink" title="参考资料"></a>参考资料</h1><ol><li><a href="https://segmentfault.com/a/1190000039203507">ubuntu20 安装和配置mysql8.0.23</a></li><li><a href="https://askubuntu.com/questions/1029177/error-1698-28000-access-denied-for-user-rootlocalhost-at-ubuntu-18-04">ERROR 1698 (28000): Access denied for user ‘root‘@’localhost’ at Ubuntu 18.04</a></li></ol>]]></content>
<summary type="html"><h1 id="情景说明"><a href="#情景说明" class="headerlink" title="情景说明"></a>情景说明</h1><p>因业务需要开展Linux系统内存优化，需要将所有数据源采集后存入数据库，方便后续查询和分析，以及可视化。先在PC上安装MyS</summary>
<category term="Linux,Kali,Mysql,MariaDB" scheme="https://wanix1988.github.io/tags/Linux-Kali-Mysql-MariaDB/"/>
</entry>
<entry>
<title>Add customization information in kernel boot time</title>
<link href="https://wanix1988.github.io/2024/04/01/Add-customization-information-in-kernel-boot-time/"/>
<id>https://wanix1988.github.io/2024/04/01/Add-customization-information-in-kernel-boot-time/</id>
<published>2024-04-01T14:18:08.000Z</published>
<updated>2024-04-01T14:19:19.265Z</updated>
<content type="html"><![CDATA[<p><a name="QAN2Z"></a></p><h1 id="添加自定义启动信息"><a href="#添加自定义启动信息" class="headerlink" title="添加自定义启动信息"></a>添加自定义启动信息</h1><figure class="highlight c"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line">diff --git a/init/main.c b/init/main.c</span><br><span class="line">index <span class="number">9e6</span>ab6d593bd.<span class="number">.24</span>f915fa4bb6 <span class="number">100644</span></span><br><span class="line">--- a/init/main.c</span><br><span class="line">+++ b/init/main.c</span><br><span class="line">@@ <span class="number">-874</span>,<span class="number">6</span> +<span class="number">874</span>,<span class="number">8</span> @@ <span class="type">static</span> <span class="type">void</span> __init <span class="title function_">print_unknown_bootoptions</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line"> asmlinkage __visible __init __no_sanitize_address __noreturn __no_stack_protector</span><br><span class="line"> <span class="type">void</span> <span class="title function_">start_kernel</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line"> {</span><br><span class="line">+ <span class="type">const</span> <span class="type">char</span> *custom_banner = <span class="string">"Welcome to rpi/Linux compiled by wanix1988"</span>;</span><br><span class="line">+</span><br><span class="line"> <span class="type">char</span> *command_line;</span><br><span class="line"> <span class="type">char</span> *after_dashes;</span><br><span class="line"> </span><br><span class="line">@@ <span class="number">-893</span>,<span class="number">6</span> +<span class="number">895</span>,<span class="number">8</span> @@ <span class="type">void</span> <span class="title function_">start_kernel</span><span class="params">(<span class="type">void</span>)</span></span><br><span class="line"> */</span><br><span class="line"> <span class="title function_">boot_cpu_init</span><span class="params">()</span>;</span><br><span class="line"> page_address_init();</span><br><span class="line">+</span><br><span class="line">+ pr_notice(<span class="string">"%s"</span>, custom_banner);</span><br><span class="line"> pr_notice(<span class="string">"%s"</span>, linux_banner);</span><br><span class="line"> early_security_init();</span><br><span class="line"> setup_arch(&command_line);</span><br></pre></td></tr></table></figure><p><a name="aD0q6"></a></p><h1 id="编译生成Image"><a href="#编译生成Image" class="headerlink" title="编译生成Image"></a>编译生成Image</h1><p>build> time make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image<br /> CALL scripts/checksyscalls.sh<br /> CC init/main.o<br /> AR init/built-in.a<br /> AR built-in.a<br /> AR vmlinux.a<br /> LD vmlinux.o<br /> OBJCOPY modules.builtin.modinfo<br /> GEN modules.builtin<br /> GEN .vmlinux.objs<br /> MODPOST vmlinux.symvers<br /> UPD include/generated/utsversion.h<br /> CC init/version-timestamp.o<br /> LD .tmp_vmlinux.kallsyms1<br /> NM .tmp_vmlinux.kallsyms1.syms<br /> KSYMS .tmp_vmlinux.kallsyms1.S<br /> AS .tmp_vmlinux.kallsyms1.S<br /> LD .tmp_vmlinux.kallsyms2<br /> NM .tmp_vmlinux.kallsyms2.syms<br /> KSYMS .tmp_vmlinux.kallsyms2.S<br /> AS .tmp_vmlinux.kallsyms2.S<br /> LD vmlinux<br /> NM System.map<br /> SORTTAB vmlinux<br /> OBJCOPY arch/arm64/boot/Image<br />make -j8 ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- Image 138.45s user 46.13s system 268% cpu 1:08.80 total<br><a name="kp3gn"></a></p><h1 id="替换rpi中的Image"><a href="#替换rpi中的Image" class="headerlink" title="替换rpi中的Image"></a>替换rpi中的Image</h1><blockquote><p>替换/boot/firmware/kernel8.img</p></blockquote><p><a name="rn2Fb"></a></p><h1 id="重启抓取dmesg"><a href="#重启抓取dmesg" class="headerlink" title="重启抓取dmesg"></a>重启抓取dmesg</h1><p>log<a href="https://www.yuque.com/attachments/yuque/0/2024/txt/42488629/1711979554289-a1f69ba3-b7df-4113-acb4-28f20e8f1811.txt">dmesg.txt</a></p>]]></content>
<summary type="html"><p><a name="QAN2Z"></a></p>
<h1 id="添加自定义启动信息"><a href="#添加自定义启动信息" class="headerlink" title="添加自定义启动信息"></a>添加自定义启动信息</h1><figure class="hi</summary>
<category term="kernel,boot,banner,log" scheme="https://wanix1988.github.io/tags/kernel-boot-banner-log/"/>
</entry>
<entry>
<title>Pairing devices over Wi-Fi in Android</title>
<link href="https://wanix1988.github.io/2024/03/17/Pairing-devices-over-Wi-Fi-in-Android/"/>
<id>https://wanix1988.github.io/2024/03/17/Pairing-devices-over-Wi-Fi-in-Android/</id>
<published>2024-03-17T12:36:44.000Z</published>
<updated>2024-03-17T13:02:46.030Z</updated>
<content type="html"><![CDATA[<h1 id="Android使用Wi-Fi配对的原理和实现"><a href="#Android使用Wi-Fi配对的原理和实现" class="headerlink" title="Android使用Wi-Fi配对的原理和实现"></a>Android使用Wi-Fi配对的原理和实现</h1><h1 id="原理"><a href="#原理" class="headerlink" title="原理"></a>原理</h1><h2 id="Android-Studio中插件实现的原理"><a href="#Android-Studio中插件实现的原理" class="headerlink" title="Android Studio中插件实现的原理"></a>Android Studio中插件实现的原理</h2><ol><li>源码</li></ol><p><a href="https://cs.android.com/android-studio/platform/tools/adt/idea/+/mirror-goog-studio-master-dev:android-adb/src/com/android/tools/idea/adb/wireless/WiFiPairingServiceImpl.kt">https://cs.android.com/android-studio/platform/tools/adt/idea/+/mirror-goog-studio-master-dev:android-adb/src/com/android/tools/idea/adb/wireless/WiFiPairingServiceImpl.kt</a></p><ol start="2"><li><p>重点函数说明</p><p> 2.1 检查adb mdns的支持状况</p> <figure class="highlight kotlin"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">override</span> <span class="function"><span class="keyword">fun</span> <span class="title">checkMdnsSupport</span><span class="params">()</span></span>: ListenableFuture<MdnsSupportState> {</span><br><span class="line"> <span class="comment">// <span class="doctag">TODO:</span> Investigate updating (then using) ddmlib instead of spawning an adb client command, so that</span></span><br><span class="line"> <span class="comment">// we don't have to rely on parsing command line output</span></span><br><span class="line"> LOG.info(<span class="string">"Checking if mDNS is supported (`adb mdns check` command)"</span>)</span><br><span class="line"> <span class="keyword">val</span> futureResult = adbService.executeCommand(listOf(<span class="string">"mdns"</span>, <span class="string">"check"</span>))</span><br><span class="line"> <span class="keyword">return</span> futureResult.transform(taskExecutor) { result -></span><br><span class="line"> <span class="keyword">when</span> {</span><br><span class="line"> result.errorCode != <span class="number">0</span> -> {</span><br><span class="line"> LOG.warn(<span class="string">"`adb mdns check` returned a non-zero error code (<span class="subst">${result.errorCode}</span>)"</span>)</span><br><span class="line"> <span class="keyword">val</span> isUnknownCommand = result.stderr.any { line -> line.contains(Regex(<span class="string">"unknown.*command"</span>)) }</span><br><span class="line"> <span class="keyword">if</span> (isUnknownCommand)</span><br><span class="line"> MdnsSupportState.AdbVersionTooLow</span><br><span class="line"> <span class="keyword">else</span></span><br><span class="line"> MdnsSupportState.AdbInvocationError</span><br><span class="line"> }</span><br><span class="line"> result.stdout.isEmpty() -> {</span><br><span class="line"> LOG.warn(<span class="string">"`adb mdns check` returned an empty output (why?)"</span>)</span><br><span class="line"> MdnsSupportState.AdbInvocationError</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// See https://android-review.googlesource.com/c/platform/system/core/+/1274009/5/adb/client/transport_mdns.cpp#553</span></span><br><span class="line"> result.stdout.any { it.contains(<span class="string">"mdns daemon version"</span>) } -> {</span><br><span class="line"> MdnsSupportState.Supported</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">else</span> -> {</span><br><span class="line"> MdnsSupportState.NotSupported</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }.catching(taskExecutor, Throwable::<span class="keyword">class</span>.java) { t -></span><br><span class="line"> LOG.warn(<span class="string">"Error executing `adb mdns check`"</span>, t)</span><br><span class="line"> MdnsSupportState.AdbInvocationError</span><br><span class="line"> }.transform(taskExecutor) { supportState -></span><br><span class="line"> <span class="comment">// This `tansform` is just for logging purposes</span></span><br><span class="line"> LOG.info(<span class="string">"Checking if mDNS is supportState result: <span class="subst">${supportState}</span>"</span>)</span><br><span class="line"> supportState</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p> 2.2 adb mdns services列出支持mdns的设备</p> <figure class="highlight kotlin"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">override</span> <span class="function"><span class="keyword">fun</span> <span class="title">scanMdnsServices</span><span class="params">()</span></span>: ListenableFuture<List<MdnsService>> {</span><br><span class="line"> <span class="comment">// <span class="doctag">TODO:</span> Investigate updating (then using) ddmlib instead of spawning an adb client command, so that</span></span><br><span class="line"> <span class="comment">// we don't have to rely on parsing command line output</span></span><br><span class="line"> <span class="keyword">val</span> futureResult = adbService.executeCommand(listOf(<span class="string">"mdns"</span>, <span class="string">"services"</span>))</span><br><span class="line"> <span class="keyword">return</span> futureResult.transform(taskExecutor) { result -></span><br><span class="line"> <span class="comment">// Output example:</span></span><br><span class="line"> <span class="comment">// List of discovered mdns services</span></span><br><span class="line"> <span class="comment">// adb-939AX05XBZ-vWgJpq_adb-tls-connect._tcp.192.168.1.86:39149</span></span><br><span class="line"> <span class="comment">// adb-939AX05XBZ-vWgJpq_adb-tls-pairing._tcp.192.168.1.86:37313</span></span><br><span class="line"> <span class="comment">// Regular expression</span></span><br><span class="line"> <span class="comment">// adb-<everything-until-space><spaces>__adb-tls-pairing._tcp.<spaces><everything-until-colon>:<port></span></span><br><span class="line"> <span class="keyword">val</span> lineRegex = Regex(<span class="string">"([^\\t]+)\\t*_adb-tls-pairing._tcp.\\t*([^:]+):([0-9]+)"</span>)</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (result.errorCode != <span class="number">0</span>) {</span><br><span class="line"> <span class="keyword">throw</span> AdbCommandException(<span class="string">"Error discovering services"</span>, result.errorCode, result.stderr)</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (result.stdout.isEmpty()) {</span><br><span class="line"> <span class="keyword">throw</span> AdbCommandException(<span class="string">"Empty output from \"adb mdns services\" command"</span>, -<span class="number">1</span>, result.stderr)</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span><span class="symbol">@transform</span> result.stdout</span><br><span class="line"> .drop(<span class="number">1</span>)</span><br><span class="line"> .mapNotNull { line -></span><br><span class="line"> <span class="keyword">val</span> matchResult = lineRegex.find(line)</span><br><span class="line"> matchResult?.let {</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="keyword">val</span> serviceName = it.groupValues[<span class="number">1</span>]</span><br><span class="line"> <span class="keyword">val</span> ipAddress = InetAddress.getByName(it.groupValues[<span class="number">2</span>])</span><br><span class="line"> <span class="keyword">val</span> port = it.groupValues[<span class="number">3</span>].toInt()</span><br><span class="line"> <span class="keyword">val</span> serviceType = <span class="keyword">if</span> (serviceName.startsWith(studioServiceNamePrefix)) ServiceType.QrCode <span class="keyword">else</span> ServiceType.PairingCode</span><br><span class="line"> MdnsService(serviceName, serviceType, ipAddress, port)</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">catch</span> (ignored: Exception) {</span><br><span class="line"> LOG.warn(<span class="string">"mDNS service entry ignored due do invalid characters: <span class="subst">${line}</span>"</span>)</span><br><span class="line"> <span class="literal">null</span></span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p> 2.3 adb pair ipAddr:port password，用来配对PC和Android手机</p> <figure class="highlight kotlin"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">override</span> <span class="function"><span class="keyword">fun</span> <span class="title">pairMdnsService</span><span class="params">(mdnsService: <span class="type">MdnsService</span>, password: <span class="type">String</span>)</span></span>: ListenableFuture<PairingResult> {</span><br><span class="line"> LOG.info(<span class="string">"Start mDNS pairing: <span class="subst">${mdnsService}</span>"</span>)</span><br><span class="line"></span><br><span class="line"> <span class="keyword">val</span> deviceAddress = <span class="string">"<span class="subst">${mdnsService.ipAddress.hostAddress}</span>:<span class="subst">${mdnsService.port}</span>"</span></span><br><span class="line"> <span class="comment">// <span class="doctag">TODO:</span> Update this when password can be passed as an argument</span></span><br><span class="line"> <span class="keyword">val</span> passwordInput = password + LineSeparator.getSystemLineSeparator().separatorString</span><br><span class="line"> <span class="comment">// <span class="doctag">TODO:</span> Investigate updating (then using) ddmlib instead of spawning an adb client command, so that</span></span><br><span class="line"> <span class="comment">// we don't have to rely on parsing command line output</span></span><br><span class="line"> <span class="keyword">val</span> futureResult = adbService.executeCommand(listOf(<span class="string">"pair"</span>, deviceAddress), passwordInput)</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> futureResult.transform(taskExecutor) { result -></span><br><span class="line"> LOG.info(<span class="string">"mDNS pairing exited with code <span class="subst">${result.errorCode}</span>"</span>)</span><br><span class="line"> result.stdout.take(<span class="number">5</span>).forEachIndexed { index, line -></span><br><span class="line"> LOG.info(<span class="string">" stdout line #<span class="variable">$index</span>: <span class="variable">$line</span>"</span>) }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (result.errorCode != <span class="number">0</span>) {</span><br><span class="line"> <span class="keyword">throw</span> AdbCommandException(<span class="string">"Error pairing device"</span>, result.errorCode, result.stderr)</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (result.stdout.isEmpty()) {</span><br><span class="line"> <span class="keyword">throw</span> AdbCommandException(<span class="string">"Empty output from \"adb pair\" command"</span>, -<span class="number">1</span>, result.stderr)</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">// Output example:</span></span><br><span class="line"> <span class="comment">// Enter pairing code: Successfully paired to 192.168.1.86:41915 [guid=adb-939AX05XBZ-vWgJpq]</span></span><br><span class="line"> <span class="comment">// Regular expression</span></span><br><span class="line"> <span class="comment">// <Prefix><everything-until-colon>:<port>[guid=<everything-until-close-bracket>]</span></span><br><span class="line"> <span class="keyword">val</span> lineRegex = Regex(<span class="string">"Successfully paired to ([^:]*):([0-9]*) \\[guid=([^\\]]*)\\]"</span>)</span><br><span class="line"> <span class="keyword">val</span> matchResult = lineRegex.find(result.stdout[<span class="number">0</span>])</span><br><span class="line"> matchResult?.let {</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="keyword">val</span> ipAddress = InetAddress.getByName(it.groupValues[<span class="number">1</span>])</span><br><span class="line"> <span class="keyword">val</span> port = it.groupValues[<span class="number">2</span>].toInt()</span><br><span class="line"> <span class="keyword">val</span> serviceGuid = it.groupValues[<span class="number">3</span>]</span><br><span class="line"> PairingResult(ipAddress, port, serviceGuid)</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">catch</span> (e: Exception) {</span><br><span class="line"> <span class="keyword">throw</span> InvalidDataException(<span class="string">"Pairing result is invalid"</span>, e)</span><br><span class="line"> }</span><br><span class="line"> } ?: <span class="keyword">throw</span> InvalidDataException(<span class="string">"Pairing result is invalid"</span>)</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p> 2.4 生成二维码的内容格式</p> <figure class="highlight kotlin"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment">* Format is "WIFI:T:ADB;S:service;P:password;;" (without the quotes)</span></span><br><span class="line"><span class="comment">*/</span></span><br><span class="line"><span class="keyword">private</span> <span class="function"><span class="keyword">fun</span> <span class="title">createPairingString</span><span class="params">(service: <span class="type">String</span>, password: <span class="type">String</span>)</span></span>: String {</span><br><span class="line"> <span class="keyword">return</span> <span class="string">"WIFI:T:ADB;S:<span class="subst">${service}</span>;P:<span class="subst">${password}</span>;;"</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></li></ol><h1 id="实现"><a href="#实现" class="headerlink" title="实现"></a>实现</h1><h2 id="用nodejs实现的命令行工具"><a href="#用nodejs实现的命令行工具" class="headerlink" title="用nodejs实现的命令行工具"></a>用nodejs实现的命令行工具</h2><ol><li><a href="https://github.com/wanix1988/adb-wifi">adb-wifi2</a></li></ol>]]></content>
<summary type="html"><h1 id="Android使用Wi-Fi配对的原理和实现"><a href="#Android使用Wi-Fi配对的原理和实现" class="headerlink" title="Android使用Wi-Fi配对的原理和实现"></a>Android使用Wi-Fi配对的原理和</summary>
<category term="Android" scheme="https://wanix1988.github.io/categories/Android/"/>
<category term="Android,adb,Wi-Fi,Pairing" scheme="https://wanix1988.github.io/tags/Android-adb-Wi-Fi-Pairing/"/>
</entry>
<entry>
<title>Hello World</title>
<link href="https://wanix1988.github.io/2024/03/12/hello-world/"/>
<id>https://wanix1988.github.io/2024/03/12/hello-world/</id>
<published>2024-03-12T04:56:08.308Z</published>
<updated>2024-03-12T04:56:08.308Z</updated>
<content type="html"><![CDATA[<p>Welcome to <a href="https://hexo.io/">Hexo</a>! This is your very first post. Check <a href="https://hexo.io/docs/">documentation</a> for more info. If you get any problems when using Hexo, you can find the answer in <a href="https://hexo.io/docs/troubleshooting.html">troubleshooting</a> or you can ask me on <a href="https://github.com/hexojs/hexo/issues">GitHub</a>.</p><h2 id="Quick-Start"><a href="#Quick-Start" class="headerlink" title="Quick Start"></a>Quick Start</h2><h3 id="Create-a-new-post"><a href="#Create-a-new-post" class="headerlink" title="Create a new post"></a>Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/writing.html">Writing</a></p><h3 id="Run-server"><a href="#Run-server" class="headerlink" title="Run server"></a>Run server</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo server</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/server.html">Server</a></p><h3 id="Generate-static-files"><a href="#Generate-static-files" class="headerlink" title="Generate static files"></a>Generate static files</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo generate</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/generating.html">Generating</a></p><h3 id="Deploy-to-remote-sites"><a href="#Deploy-to-remote-sites" class="headerlink" title="Deploy to remote sites"></a>Deploy to remote sites</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo deploy</span><br></pre></td></tr></table></figure><p>More info: <a href="https://hexo.io/docs/deployment.html">Deployment</a></p>]]></content>
<summary type="html"><p>Welcome to <a href="https://hexo.io/">Hexo</a>! This is your very first post. Check <a href="https://hexo.io/docs/">documentation</a> for</summary>
</entry>
<entry>
<title>Debug Linux Kernel With KGDB</title>
<link href="https://wanix1988.github.io/2018/12/04/Debug-Linux-Kernel-With-KGDB/"/>
<id>https://wanix1988.github.io/2018/12/04/Debug-Linux-Kernel-With-KGDB/</id>
<published>2018-12-04T03:30:00.000Z</published>
<updated>2024-03-12T04:56:08.308Z</updated>
<content type="html"><![CDATA[<h1 id="使用KGDB调试Linux-Kernel-20181114"><a href="#使用KGDB调试Linux-Kernel-20181114" class="headerlink" title="使用KGDB调试Linux Kernel(20181114)"></a>使用KGDB调试Linux Kernel(20181114)</h1><ol><li><p>Grub启动命令行中添加kgdboc=ttyS0,115200 kgdbwait nokaslr<br>a) rodata=off </p><blockquote><p>这条好像没什么用？待验证 </p></blockquote><p>b)必须添加nokaslr，否则vmlinux符号会对不上，无法正常显示debug信息和下断点</p></li><li>使用socat做转发<br>a) sudo socat -d -d /tmp/vboxsock PTY<blockquote><ol><li>记下打印出的转发设备，比如/dev/pts/4 </li><li>这个操作要在串口连接虚拟机前做，不然就会直接退出，连接不上了 </li><li>控制台不要关闭</li><li>如果没有权限连接/dev/pts/4，可以在gdb中执行下面的命令开启权限<blockquote><p>sudo chmod 777 /dev/pts/4</p></blockquote></li></ol></blockquote></li><li>不要在start_kernel处下断点，因为kgdb在start_kernel执行后才初始化，所以不会在start_kernel断下来</li><li>References <ul><li><a href="https://kgdb.wiki.kernel.org/index.php/Main_Page">https://kgdb.wiki.kernel.org/index.php/Main_Page</a></li><li><a href="https://kernelnewbies.org/KernelHacking-HOWTO/Debugging_Kernel">https://kernelnewbies.org/KernelHacking-HOWTO/Debugging_Kernel</a></li><li><a href="https://www.kernel.org/doc/htmldocs/kgdb/index.html">https://www.kernel.org/doc/htmldocs/kgdb/index.html</a></li><li><a href="https://stackoverflow.com/questions/48539434/kgdb-and-gdb-over-serial-cable-cannot-set-breakpoints">https://stackoverflow.com/questions/48539434/kgdb-and-gdb-over-serial-cable-cannot-set-breakpoints</a></li></ul></li></ol>]]></content>
<summary type="html"><h1 id="使用KGDB调试Linux-Kernel-20181114"><a href="#使用KGDB调试Linux-Kernel-20181114" class="headerlink" title="使用KGDB调试Linux Kernel(20181114)"></</summary>
<category term="kernel" scheme="https://wanix1988.github.io/categories/kernel/"/>
<category term="debug,linux,kernel,kgdbkdb" scheme="https://wanix1988.github.io/tags/debug-linux-kernel-kgdbkdb/"/>
</entry>
<entry>
<title>debug_linux_kernel_with_virtualbox</title>
<link href="https://wanix1988.github.io/2018/11/13/debug-linux-kernel-with-virtualbox/"/>
<id>https://wanix1988.github.io/2018/11/13/debug-linux-kernel-with-virtualbox/</id>
<published>2018-11-13T14:25:52.000Z</published>
<updated>2024-03-12T04:56:08.308Z</updated>
<content type="html"><![CDATA[<h1 id="使用VirtualBox搭建Linux-Kernel调试平台"><a href="#使用VirtualBox搭建Linux-Kernel调试平台" class="headerlink" title="使用VirtualBox搭建Linux Kernel调试平台"></a>使用VirtualBox搭建Linux Kernel调试平台</h1><h2 id="1-安装linux-source-uname-r"><a href="#1-安装linux-source-uname-r" class="headerlink" title="1.安装linux-source-$(uname -r)"></a>1.安装linux-source-$(uname -r)</h2><pre><code>a) 最好在Host上安装/编译，然后将linux-source目录挂载到虚拟机中安装，如果在虚拟机中安装和编译，会导致debug kernel的时候无法访问源码和symbolsb) 如果/分区够大(free > 30GB)，可以选择放在/usr/src目录下，否则找分区free空间较大的放置，防止空间不够</code></pre><h2 id="2-解压-usr-src-linux-source-uname-r-并修改相关目录权限"><a href="#2-解压-usr-src-linux-source-uname-r-并修改相关目录权限" class="headerlink" title="2.解压/usr/src/linux-source-$(uname -r),并修改相关目录权限"></a>2.解压/usr/src/linux-source-$(uname -r),并修改相关目录权限</h2><h2 id="3-使用make-oldconfig创建模板config"><a href="#3-使用make-oldconfig创建模板config" class="headerlink" title="3.使用make oldconfig创建模板config"></a>3.使用make oldconfig创建模板config</h2><h2 id="4-使用make-menuconfig客制化选项-gt-打开debug开关和所需其他功能"><a href="#4-使用make-menuconfig客制化选项-gt-打开debug开关和所需其他功能" class="headerlink" title="4.使用make menuconfig客制化选项 ==> 打开debug开关和所需其他功能"></a>4.使用make menuconfig客制化选项 ==> 打开debug开关和所需其他功能</h2><h2 id="5-make-j4-amp-amp-make-modules"><a href="#5-make-j4-amp-amp-make-modules" class="headerlink" title="5.make -j4 && make modules"></a>5.make -j4 && make modules</h2><h2 id="6-make-install-amp-amp-make-modules-install"><a href="#6-make-install-amp-amp-make-modules-install" class="headerlink" title="6.make install && make modules_install"></a>6.make install && make modules_install</h2><h2 id="7-sudo-mkinitramfs-4-15-0-o-boot-initrd-4-15-8"><a href="#7-sudo-mkinitramfs-4-15-0-o-boot-initrd-4-15-8" class="headerlink" title="7.sudo mkinitramfs 4.15.0 -o /boot/initrd-4.15.8"></a>7.sudo mkinitramfs 4.15.0 -o /boot/initrd-4.15.8</h2><pre><code>a) 这步必须要做，否则开机找不到initramfs会无法挂载/root</code></pre><h2 id="8-sudo-update-grub"><a href="#8-sudo-update-grub" class="headerlink" title="8.sudo update-grub"></a>8.sudo update-grub</h2><h2 id="9-设置VirtualBox的串口"><a href="#9-设置VirtualBox的串口" class="headerlink" title="9.设置VirtualBox的串口"></a>9.设置VirtualBox的串口</h2><pre><code>a) com1b) Host Pipec) 不要勾选连接已有pipe/socketd) Path/Address填写/tmp/vboxsock (随便命名)</code></pre><h2 id="10-安装minicom"><a href="#10-安装minicom" class="headerlink" title="10.安装minicom"></a>10.安装minicom</h2><h2 id="11-配置minicom"><a href="#11-配置minicom" class="headerlink" title="11.配置minicom"></a>11.配置minicom</h2><pre><code>a) 串口名称unix#/tmp/vboxsock ==>此处一定要记得加unix#前缀，否则连不上b) 115200n8c) 配置会写到~/.minirc中</code></pre><h2 id="12-Kgdb设置"><a href="#12-Kgdb设置" class="headerlink" title="12.Kgdb设置"></a>12.Kgdb设置</h2><pre><code>a) console=ttyS0,115200 kgdboc=ttyS0,115200 kgdbwaitb) 启动内核后，在串口终端中，输入如下命令： i.bash-3.2# echo g > /proc/sysrq-trigger 1.SysRq : DEBUG 2.Entering KGDBc) 建议开始时每次在启动时暂停grub，然后在kernel后输入上面command line参数后启动，避免修改grub相关文件导致的无法启动问题 d) 如果修改/boot/grub/grub.cfg，或者/etc/default/grub，或者/boot/grub/menu.lst等文件导致启动问题无法正常进入系统，可以在光驱中挂载livecd，然后进入后挂载/boot分区后修复即可，无需重装系统。</code></pre><h1 id="注意事项："><a href="#注意事项：" class="headerlink" title="注意事项："></a>注意事项：</h1><pre><code>1.Ubuntu 16.04.5 LTS使用Ubuntu18.04 LTS编译的linux-source-4.15.8执行make modules_install时报错: error while loading shared libraries: libssl.so.1.1 (and libcrypto.so.1.1) a) 需要编译libopenssl-1.1.x版本替换1.0.0版本 ii.下载并解压源码： 1.wget https://www.openssl.org/source/openssl-1.1.1.tar.gz 2.tar -zxf openssl-1.1.1.tar.gz iii.编译安装： 1.cd openssl-1.1.1 2../config 3.make install iv.移除旧版本 Openssl： 1.mv /usr/bin/openssl /tmp/ 2.ln -s /usr/local/bin/openssl /usr/bin/openssl v.复制源码： 1.如果报错：openssl: error while loading shared libraries: libssl.so.1.1: cannot open shared object a)cp libssl.so.1.1 /lib/x86_64-linux-gnu b)libcrypto.so.1.1 /lib/x86_64-linux-gnu2.映射Host文件夹到虚拟机 a) 虚拟机中安装VirtualBox Guest Additional i.sudo mount -t iso9660 /dev/cdrom /mnt/ ii.sudo /mnt/VBoxAdditional.sh b) 在Share Folders中选择Host目录，并自动挂载文件夹 i.sudo mkdir /mnt/vboxshare ii.sudo mount -t vboxsf Host文件夹名 /mnt/vboxshare 1.上面要使用Host文件夹名，否则使用share会报Protocol Error</code></pre>]]></content>
<summary type="html"><h1 id="使用VirtualBox搭建Linux-Kernel调试平台"><a href="#使用VirtualBox搭建Linux-Kernel调试平台" class="headerlink" title="使用VirtualBox搭建Linux Kernel调试平台"></summary>
<category term="kernel" scheme="https://wanix1988.github.io/categories/kernel/"/>
<category term="debug,linux,kernel,virtualbox,kgdb,serial" scheme="https://wanix1988.github.io/tags/debug-linux-kernel-virtualbox-kgdb-serial/"/>
</entry>
<entry>
<title>difference_between___stdcall___cdcel___fastcall</title>
<link href="https://wanix1988.github.io/2018/08/12/difference-between-stdcall-cdcel-fastcall/"/>
<id>https://wanix1988.github.io/2018/08/12/difference-between-stdcall-cdcel-fastcall/</id>
<published>2018-08-12T14:51:13.000Z</published>
<updated>2024-03-12T04:56:08.308Z</updated>
<content type="html"><![CDATA[<h1 id="stdcall、cdcel和-fastcall三者的区别"><a href="#stdcall、cdcel和-fastcall三者的区别" class="headerlink" title="stdcall、cdcel和__fastcall三者的区别"></a><strong>stdcall、</strong>cdcel和__fastcall三者的区别</h1><p><strong>stdcall、</strong>cdecl和__fastcall是三种函数调用协议，函数调用协议会影响函数参数的入栈方式、栈内数据的清除方式、编译器函数名的修饰规则等。</p><h2 id="调用协议常用场合"><a href="#调用协议常用场合" class="headerlink" title="调用协议常用场合"></a>调用协议常用场合</h2><ol><li>__stdcall：Windows API默认的函数调用协议。</li><li>__cdecl：C/C++默认的函数调用协议。</li><li>__fastcall：适用于对性能要求较高的场合。</li></ol><h2 id="函数参数入栈方式"><a href="#函数参数入栈方式" class="headerlink" title="函数参数入栈方式"></a>函数参数入栈方式</h2><ol><li>__stdcall：函数参数由右向左入栈。</li><li>__cdecl：函数参数由右向左入栈。</li><li>__fastcall：从左开始不大于4字节的参数放入CPU的ECX和EDX寄存器，其余参数从右向左入栈。</li></ol><p>问题一：__fastcall在寄存器中放入不大于4字节的参数，故性能较高，适用于需要高性能的场合。</p><h2 id="栈内数据清除方式"><a href="#栈内数据清除方式" class="headerlink" title="栈内数据清除方式"></a>栈内数据清除方式</h2><ol><li>__stdcall：函数调用结束后由被调用函数清除栈内数据。</li><li>__cdecl：函数调用结束后由函数调用者清除栈内数据。</li><li>__fastcall：函数调用结束后由被调用函数清除栈内数据。<blockquote><p>问题一：不同编译器设定的栈结构不尽相同，跨开发平台时由函数调用者清除栈内数据不可行。</p></blockquote></li></ol><blockquote><p>问题二：某些函数的参数是可变的，如printf函数，这样的函数只能由函数调用者清除栈内数据。</p></blockquote><blockquote><p>问题三：由调用者清除栈内数据时，每次调用都包含清除栈内数据的代码，故可执行文件较大。</p></blockquote><h2 id="C语言编译器函数名称修饰规则"><a href="#C语言编译器函数名称修饰规则" class="headerlink" title="C语言编译器函数名称修饰规则"></a>C语言编译器函数名称修饰规则</h2><ol><li>__stdcall：编译后，函数名被修饰为“_functionname@number”。</li><li>__cdecl：编译后，函数名被修饰为“_functionname”。</li><li>__fastcall：编译后，函数名给修饰为“@functionname@nmuber”。</li></ol><blockquote><p>注：“functionname”为函数名，“number”为参数字节数。</p></blockquote><blockquote><p>注：函数实现和函数定义时如果使用了不同的函数调用协议，则无法实现函数调用。</p></blockquote><h2 id="C-语言编译器函数名称修饰规则"><a href="#C-语言编译器函数名称修饰规则" class="headerlink" title="C++语言编译器函数名称修饰规则"></a>C++语言编译器函数名称修饰规则</h2><ol><li>__stdcall：编译后，函数名被修饰为“?functionname@@YG<strong>**</strong>@Z”。</li><li>__cdecl：编译后，函数名被修饰为“?functionname@@YA<strong>**</strong>@Z”。</li><li>__fastcall：编译后，函数名被修饰为“?functionname@@YI<strong>**</strong>@Z”。</li></ol><blockquote><p>注：“<strong>**</strong>”为函数返回值类型和参数类型表。</p></blockquote><blockquote><p>注：函数实现和函数定义时如果使用了不同的函数调用协议，则无法实现函数调用。</p></blockquote><p>C语言和C++语言间如果不进行特殊处理，也无法实现函数的互相调用。</p>]]></content>
<summary type="html"><h1 id="stdcall、cdcel和-fastcall三者的区别"><a href="#stdcall、cdcel和-fastcall三者的区别" class="headerlink" title="stdcall、cdcel和__fastcall三者的区别"></a><</summary>
<category term="C/C++" scheme="https://wanix1988.github.io/tags/C-C/"/>
</entry>
<entry>
<title>Running Arm64 Linux Kernel in Qemu</title>
<link href="https://wanix1988.github.io/2018/06/12/Running-Arm64-Linux-Kernel-in-Qemu/"/>
<id>https://wanix1988.github.io/2018/06/12/Running-Arm64-Linux-Kernel-in-Qemu/</id>
<published>2018-06-12T13:44:16.000Z</published>
<updated>2024-03-12T04:56:08.308Z</updated>
<content type="html"><![CDATA[<h2 id="原由"><a href="#原由" class="headerlink" title="原由"></a>原由</h2><p>看了一下《奔跑吧Linux内核》这本书，决定好好研究一下ARM64平台，包括汇编和Linux Kernel相关的知识。网络上搜索到了之前他人搭建成功的帖子，自己照着做一遍却发现qemu启动后没有任何输出，查看进程占用率却非常高，感觉就是qemu cpu跑飞了。仔细思考后觉得问题一定出在编译器上面，所以下载了linaro提供的最新编译器，果然解决问题。下面把整个流程记录一下，方便后来人。</p><h2 id="软件环境"><a href="#软件环境" class="headerlink" title="软件环境"></a>软件环境</h2><ol><li>Ubuntu 18.04 LTS</li><li>Qemu 2.11.1</li><li><a href="https://releases.linaro.org/components/toolchain/binaries/latest/aarch64-linux-gnu/gcc-linaro-7.2.1-2017.11-x86_64_aarch64-linux-gnu.tar.xz">Linaro aarch64 linux toolchain</a></li><li><a href="git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git">Linux Kernel Torvalds 4.7 or 4.17</a> </li></ol><h2 id="软件环境配置说明"><a href="#软件环境配置说明" class="headerlink" title="软件环境配置说明"></a>软件环境配置说明</h2><ol><li>Ubuntu 16.04或者18.04应该都没问题，但是12.04或者14.04可能需要源码编译qemu（未验证）</li><li>Qemu我尝试了source code build和直接通过<br><code>sudo apt install qemu-system-aarch64</code>来安装，都没有问题。source code build的时候都指明需要添加<code>--target-list=aarch64-softmmu</code>，我也有添加，但是没有不添加的测试结果。后面如果哪天不小心试验了就把结果补上。</li><li>交叉编译器千万不要使用Ubuntu提供的，到上面linaro链接中下载最新的版本即可。 </li><li>Linux Kernel版本我有试过4.7和4.17（今天的master branch，2018/06/12），都OK</li><li>如果Ubuntu系统较新，编译时需要安装下面的包：</li></ol><ul><li>libncurses5-dev – 用于<code>make menuconfig</code>时显示终端图形菜单，否则报错;</li><li>libssl-dev – kernel中的scripts/extract-cert.c中的openssl头文件会无法找到，报错。</li></ul><ol start="6"><li>为了试验方便，暂未做initramfs。之前有download一份busybox，目前来看也需换编译器再重新build一遍为好。</li></ol><h2 id="Qemu运行命令"><a href="#Qemu运行命令" class="headerlink" title="Qemu运行命令"></a>Qemu运行命令</h2><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">qemu-system-aarch64 \</span><br><span class="line"> -machine virt \</span><br><span class="line"> -cpu cortex-a57 \</span><br><span class="line"> -machine type=virt \</span><br><span class="line"> -nographic \</span><br><span class="line"> -m 2048 \</span><br><span class="line"> -smp 2 \ </span><br><span class="line"> -kernel arch/arm64/boot/Image \</span><br><span class="line"> --append "rdinit=/linuxrc console=ttyAMA0"</span><br></pre></td></tr></table></figure><h2 id="运行结果"><a href="#运行结果" class="headerlink" title="运行结果"></a>运行结果</h2><figure class="highlight plaintext"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span 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class="line">163</span><br><span class="line">164</span><br><span class="line">165</span><br><span class="line">166</span><br><span class="line">167</span><br><span class="line">168</span><br><span class="line">169</span><br><span class="line">170</span><br><span class="line">171</span><br><span class="line">172</span><br><span class="line">173</span><br><span class="line">174</span><br><span class="line">175</span><br><span class="line">176</span><br><span class="line">177</span><br><span class="line">178</span><br><span class="line">179</span><br><span class="line">180</span><br><span class="line">181</span><br><span class="line">182</span><br><span class="line">183</span><br><span class="line">184</span><br><span class="line">185</span><br><span class="line">186</span><br><span class="line">187</span><br><span class="line">188</span><br><span class="line">189</span><br><span class="line">190</span><br><span class="line">191</span><br><span class="line">192</span><br><span class="line">193</span><br><span class="line">194</span><br><span class="line">195</span><br><span class="line">196</span><br><span class="line">197</span><br><span class="line">198</span><br><span class="line">199</span><br><span class="line">200</span><br><span class="line">201</span><br><span class="line">202</span><br><span class="line">203</span><br><span class="line">204</span><br><span class="line">205</span><br><span class="line">206</span><br><span class="line">207</span><br></pre></td><td class="code"><pre><span class="line">[ 0.000000] Booting Linux on physical CPU 0x0</span><br><span class="line">[ 0.000000] Linux version 4.9.0 (wenix@wenix-ThinkPad-X230-Tablet) (gcc version 7.2.1 20171011 (Linaro GCC 7.2-2017.11) ) #1 SMP PREEMPT Tue Jun 12 21:31:21 CST 2018</span><br><span class="line">[ 0.000000] Boot CPU: AArch64 Processor [411fd070]</span><br><span class="line">[ 0.000000] efi: Getting EFI parameters from FDT:</span><br><span class="line">[ 0.000000] efi: UEFI not found.</span><br><span class="line">[ 0.000000] cma: Reserved 16 MiB at 0x00000000bf000000</span><br><span class="line">[ 0.000000] psci: probing for conduit method from DT.</span><br><span class="line">[ 0.000000] psci: PSCIv0.2 detected in firmware.</span><br><span class="line">[ 0.000000] psci: Using standard PSCI v0.2 function IDs</span><br><span class="line">[ 0.000000] psci: Trusted OS migration not required</span><br><span class="line">[ 0.000000] percpu: Embedded 21 pages/cpu @ffff80007efbf000 s47896 r8192 d29928 u86016</span><br><span class="line">[ 0.000000] Detected PIPT I-cache on CPU0</span><br><span class="line">[ 0.000000] CPU features: enabling workaround for ARM erratum 832075</span><br><span class="line">[ 0.000000] CPU features: enabling workaround for ARM erratum 834220</span><br><span class="line">[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 516096</span><br><span class="line">[ 0.000000] Kernel command line: rdinit=/linuxrc console=ttyAMA0</span><br><span class="line">[ 0.000000] PID hash table entries: 4096 (order: 3, 32768 bytes)</span><br><span class="line">[ 0.000000] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes)</span><br><span class="line">[ 0.000000] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes)</span><br><span class="line">[ 0.000000] Memory: 2032644K/2097152K available (7740K kernel code, 494K rwdata, 2744K rodata, 576K init, 271K bss, 48124K reserved, 16384K cma-reserved)</span><br><span class="line">[ 0.000000] Virtual kernel memory layout:</span><br><span class="line">[ 0.000000] modules : 0xffff000000000000 - 0xffff000008000000 ( 128 MB)</span><br><span class="line">[ 0.000000] vmalloc : 0xffff000008000000 - 0xffff7dffbfff0000 (129022 GB)</span><br><span class="line">[ 0.000000] .text : 0xffff000008080000 - 0xffff000008810000 ( 7744 KB)</span><br><span class="line">[ 0.000000] .rodata : 0xffff000008810000 - 0xffff000008ad0000 ( 2816 KB)</span><br><span class="line">[ 0.000000] .init : 0xffff000008ad0000 - 0xffff000008b60000 ( 576 KB)</span><br><span class="line">[ 0.000000] .data : 0xffff000008b60000 - 0xffff000008bdba00 ( 495 KB)</span><br><span class="line">[ 0.000000] .bss : 0xffff000008bdba00 - 0xffff000008c1f734 ( 272 KB)</span><br><span class="line">[ 0.000000] fixed : 0xffff7dfffe7fd000 - 0xffff7dfffec00000 ( 4108 KB)</span><br><span class="line">[ 0.000000] PCI I/O : 0xffff7dfffee00000 - 0xffff7dffffe00000 ( 16 MB)</span><br><span class="line">[ 0.000000] vmemmap : 0xffff7e0000000000 - 0xffff800000000000 ( 2048 GB maximum)</span><br><span class="line">[ 0.000000] 0xffff7e0000000000 - 0xffff7e0002000000 ( 32 MB actual)</span><br><span class="line">[ 0.000000] memory : 0xffff800000000000 - 0xffff800080000000 ( 2048 MB)</span><br><span class="line">[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1</span><br><span class="line">[ 0.000000] Preemptible hierarchical RCU implementation.</span><br><span class="line">[ 0.000000] Build-time adjustment of leaf fanout to 64.</span><br><span class="line">[ 0.000000] RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2.</span><br><span class="line">[ 0.000000] RCU: Adjusting geometry for rcu_fanout_leaf=64, nr_cpu_ids=2</span><br><span class="line">[ 0.000000] NR_IRQS:64 nr_irqs:64 0</span><br><span class="line">[ 0.000000] GICv2m: range[mem 0x08020000-0x08020fff], SPI[80:143]</span><br><span class="line">[ 0.000000] arm_arch_timer: Architected cp15 timer(s) running at 62.50MHz (virt).</span><br><span class="line">[ 0.000000] clocksource: arch_sys_counter: mask: 0xffffffffffffff max_cycles: 0x1cd42e208c, max_idle_ns: 881590405314 ns</span><br><span class="line">[ 0.000154] sched_clock: 56 bits at 62MHz, resolution 16ns, wraps every 4398046511096ns</span><br><span class="line">[ 0.006170] Console: colour dummy device 80x25</span><br><span class="line">[ 0.008012] Calibrating delay loop (skipped), value calculated using timer frequency.. 125.00 BogoMIPS (lpj=250000)</span><br><span class="line">[ 0.008295] pid_max: default: 32768 minimum: 301</span><br><span class="line">[ 0.009475] Security Framework initialized</span><br><span class="line">[ 0.009960] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes)</span><br><span class="line">[ 0.009999] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes)</span><br><span class="line">[ 0.033277] ASID allocator initialised with 65536 entries</span><br><span class="line">[ 0.066997] EFI services will not be available.</span><br><span class="line">[ 0.120844] Detected PIPT I-cache on CPU1</span><br><span class="line">[ 0.122607] CPU1: Booted secondary processor [411fd070]</span><br><span class="line">[ 0.131049] Brought up 2 CPUs</span><br><span class="line">[ 0.131190] SMP: Total of 2 processors activated.</span><br><span class="line">[ 0.131388] CPU features: detected feature: 32-bit EL0 Support</span><br><span class="line">[ 0.133999] CPU: All CPU(s) started at EL1</span><br><span class="line">[ 0.135370] alternatives: patching kernel code</span><br><span class="line">[ 0.154940] devtmpfs: initialized</span><br><span class="line">[ 0.172605] DMI not present or invalid.</span><br><span class="line">[ 0.176170] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns</span><br><span class="line">[ 0.221075] NET: Registered protocol family 16</span><br><span class="line">[ 0.260407] cpuidle: using governor menu</span><br><span class="line">[ 0.261303] vdso: 2 pages (1 code @ ffff000008817000, 1 data @ ffff000008b64000)</span><br><span class="line">[ 0.261679] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers.</span><br><span class="line">[ 0.271773] DMA: preallocated 256 KiB pool for atomic allocations</span><br><span class="line">[ 0.273033] Serial: AMBA PL011 UART driver</span><br><span class="line">[ 0.335144] 9000000.pl011: ttyAMA0 at MMIO 0x9000000 (irq = 39, base_baud = 0) is a PL011 rev1</span><br><span class="line">[ 0.349070] console [ttyAMA0] enabled</span><br><span class="line">[ 0.567544] HugeTLB registered 2 MB page size, pre-allocated 0 pages</span><br><span class="line">[ 0.582343] ACPI: Interpreter disabled.</span><br><span class="line">[ 0.592095] vgaarb: loaded</span><br><span class="line">[ 0.597022] SCSI subsystem initialized</span><br><span class="line">[ 0.606885] usbcore: registered new interface driver usbfs</span><br><span class="line">[ 0.610791] usbcore: registered new interface driver hub</span><br><span class="line">[ 0.612937] usbcore: registered new device driver usb</span><br><span class="line">[ 0.618796] pps_core: LinuxPPS API ver. 1 registered</span><br><span class="line">[ 0.619127] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <[email protected]></span><br><span class="line">[ 0.620351] PTP clock support registered</span><br><span class="line">[ 0.627272] dmi: Firmware registration failed.</span><br><span class="line">[ 0.631976] Advanced Linux Sound Architecture Driver Initialized.</span><br><span class="line">[ 0.645917] clocksource: Switched to clocksource arch_sys_counter</span><br><span class="line">[ 0.651591] VFS: Disk quotas dquot_6.6.0</span><br><span class="line">[ 0.652217] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)</span><br><span class="line">[ 0.658270] pnp: PnP ACPI: disabled</span><br><span class="line">[ 0.767641] NET: Registered protocol family 2</span><br><span class="line">[ 0.776560] TCP established hash table entries: 16384 (order: 5, 131072 bytes)</span><br><span class="line">[ 0.777303] TCP bind hash table entries: 16384 (order: 6, 262144 bytes)</span><br><span class="line">[ 0.778647] TCP: Hash tables configured (established 16384 bind 16384)</span><br><span class="line">[ 0.780489] UDP hash table entries: 1024 (order: 3, 32768 bytes)</span><br><span class="line">[ 0.781007] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes)</span><br><span class="line">[ 0.785364] NET: Registered protocol family 1</span><br><span class="line">[ 0.799807] RPC: Registered named UNIX socket transport module.</span><br><span class="line">[ 0.800128] RPC: Registered udp transport module.</span><br><span class="line">[ 0.800353] RPC: Registered tcp transport module.</span><br><span class="line">[ 0.800551] RPC: Registered tcp NFSv4.1 backchannel transport module.</span><br><span class="line">[ 0.811081] hw perfevents: enabled with armv8_pmuv3 PMU driver, 1 counters available</span><br><span class="line">[ 0.813225] kvm [1]: HYP mode not available</span><br><span class="line">[ 0.836878] futex hash table entries: 512 (order: 4, 65536 bytes)</span><br><span class="line">[ 0.838616] audit: initializing netlink subsys (disabled)</span><br><span class="line">[ 0.839971] audit: type=2000 audit(0.788:1): initialized</span><br><span class="line">[ 0.847568] workingset: timestamp_bits=46 max_order=19 bucket_order=0</span><br><span class="line">[ 0.969082] squashfs: version 4.0 (2009/01/31) Phillip Lougher</span><br><span class="line">[ 0.979427] NFS: Registering the id_resolver key type</span><br><span class="line">[ 0.980928] Key type id_resolver registered</span><br><span class="line">[ 0.981684] Key type id_legacy registered</span><br><span class="line">[ 0.982464] nfs4filelayout_init: NFSv4 File Layout Driver Registering...</span><br><span class="line">[ 0.986105] 9p: Installing v9fs 9p2000 file system support</span><br><span class="line">[ 1.007251] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 248)</span><br><span class="line">[ 1.008184] io scheduler noop registered</span><br><span class="line">[ 1.012464] io scheduler cfq registered (default)</span><br><span class="line">[ 1.028667] pl061_gpio 9030000.pl061: PL061 GPIO chip @0x0000000009030000 registered</span><br><span class="line">[ 1.034893] OF: PCI: host bridge /pcie@10000000 ranges:</span><br><span class="line">[ 1.036393] OF: PCI: IO 0x3eff0000..0x3effffff -> 0x00000000</span><br><span class="line">[ 1.037551] OF: PCI: MEM 0x10000000..0x3efeffff -> 0x10000000</span><br><span class="line">[ 1.038668] OF: PCI: MEM 0x8000000000..0xffffffffff -> 0x8000000000</span><br><span class="line">[ 1.040862] pci-host-generic 3f000000.pcie: ECAM at [mem 0x3f000000-0x3fffffff] for [bus 00-0f]</span><br><span class="line">[ 1.043966] pci-host-generic 3f000000.pcie: PCI host bridge to bus 0000:00</span><br><span class="line">[ 1.044717] pci_bus 0000:00: root bus resource [bus 00-0f]</span><br><span class="line">[ 1.046480] pci_bus 0000:00: root bus resource [io 0x0000-0xffff]</span><br><span class="line">[ 1.047091] pci_bus 0000:00: root bus resource [mem 0x10000000-0x3efeffff]</span><br><span class="line">[ 1.047328] pci_bus 0000:00: root bus resource [mem 0x8000000000-0xffffffffff]</span><br><span class="line">[ 1.060800] pci 0000:00:01.0: BAR 6: assigned [mem 0x10000000-0x1007ffff pref]</span><br><span class="line">[ 1.061606] pci 0000:00:01.0: BAR 4: assigned [mem 0x8000000000-0x8000003fff 64bit pref]</span><br><span class="line">[ 1.063233] pci 0000:00:01.0: BAR 1: assigned [mem 0x10080000-0x10080fff]</span><br><span class="line">[ 1.063500] pci 0000:00:01.0: BAR 0: assigned [io 0x1000-0x101f]</span><br><span class="line">[ 1.093103] virtio-pci 0000:00:01.0: enabling device (0000 -> 0003)</span><br><span class="line">[ 1.099730] xenfs: not registering filesystem on non-xen platform</span><br><span class="line">[ 1.156174] Serial: 8250/16550 driver, 4 ports, IRQ sharing disabled</span><br><span class="line">[ 1.175144] Unable to detect cache hierarchy from DT for CPU 0</span><br><span class="line">[ 1.225263] loop: module loaded</span><br><span class="line">[ 1.232529] hisi_sas: driver version v1.6</span><br><span class="line">[ 1.249489] libphy: Fixed MDIO Bus: probed</span><br><span class="line">[ 1.256540] tun: Universal TUN/TAP device driver, 1.6</span><br><span class="line">[ 1.256836] tun: (C) 1999-2004 Max Krasnyansky <[email protected]></span><br><span class="line">[ 1.281267] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k</span><br><span class="line">[ 1.282430] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.</span><br><span class="line">[ 1.284398] igb: Intel(R) Gigabit Ethernet Network Driver - version 5.4.0-k</span><br><span class="line">[ 1.284919] igb: Copyright (c) 2007-2014 Intel Corporation.</span><br><span class="line">[ 1.287458] igbvf: Intel(R) Gigabit Virtual Function Network Driver - version 2.4.0-k</span><br><span class="line">[ 1.287846] igbvf: Copyright (c) 2009 - 2012 Intel Corporation.</span><br><span class="line">[ 1.289391] sky2: driver version 1.30</span><br><span class="line">[ 1.296439] VFIO - User Level meta-driver version: 0.3</span><br><span class="line">[ 1.311934] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver</span><br><span class="line">[ 1.312653] ehci-pci: EHCI PCI platform driver</span><br><span class="line">[ 1.313626] ehci-platform: EHCI generic platform driver</span><br><span class="line">[ 1.316055] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver</span><br><span class="line">[ 1.316631] ohci-pci: OHCI PCI platform driver</span><br><span class="line">[ 1.319698] ohci-platform: OHCI generic platform driver</span><br><span class="line">[ 1.324997] usbcore: registered new interface driver usb-storage</span><br><span class="line">[ 1.339686] mousedev: PS/2 mouse device common for all mice</span><br><span class="line">[ 1.352956] rtc-pl031 9010000.pl031: rtc core: registered pl031 as rtc0</span><br><span class="line">[ 1.356558] i2c /dev entries driver</span><br><span class="line">[ 1.372128] sdhci: Secure Digital Host Controller Interface driver</span><br><span class="line">[ 1.372477] sdhci: Copyright(c) Pierre Ossman</span><br><span class="line">[ 1.374906] Synopsys Designware Multimedia Card Interface Driver</span><br><span class="line">[ 1.379711] sdhci-pltfm: SDHCI platform and OF driver helper</span><br><span class="line">[ 1.383049] ledtrig-cpu: registered to indicate activity on CPUs</span><br><span class="line">[ 1.395135] usbcore: registered new interface driver usbhid</span><br><span class="line">[ 1.395452] usbhid: USB HID core driver</span><br><span class="line">[ 1.408814] NET: Registered protocol family 17</span><br><span class="line">[ 1.412004] 9pnet: Installing 9P2000 support</span><br><span class="line">[ 1.413164] Key type dns_resolver registered</span><br><span class="line">[ 1.420484] registered taskstats version 1</span><br><span class="line">[ 1.431403] input: gpio-keys as /devices/platform/gpio-keys/input/input0</span><br><span class="line">[ 1.437461] rtc-pl031 9010000.pl031: setting system clock to 2018-06-12 14:49:36 UTC (1528814976)</span><br><span class="line">[ 1.440137] ALSA device list:</span><br><span class="line">[ 1.440420] No soundcards found.</span><br><span class="line">[ 1.447909] uart-pl011 9000000.pl011: no DMA platform data</span><br><span class="line">[ 1.454875] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6</span><br><span class="line">[ 1.455145] Please append a correct "root=" boot option; here are the available partitions:</span><br><span class="line">[ 1.455914] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)</span><br><span class="line">[ 1.457050] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.9.0 #1</span><br><span class="line">[ 1.457405] Hardware name: linux,dummy-virt (DT)</span><br><span class="line">[ 1.457952] Call trace:</span><br><span class="line">[ 1.459510] [<ffff0000080884b0>] dump_backtrace+0x0/0x1b0</span><br><span class="line">[ 1.459943] [<ffff000008088674>] show_stack+0x14/0x20</span><br><span class="line">[ 1.460185] [<ffff00000837b218>] dump_stack+0x94/0xb4</span><br><span class="line">[ 1.460405] [<ffff00000816630c>] panic+0x118/0x288</span><br><span class="line">[ 1.460599] [<ffff000008ad1144>] mount_block_root+0x19c/0x270</span><br><span class="line">[ 1.460797] [<ffff000008ad1334>] mount_root+0x11c/0x134</span><br><span class="line">[ 1.460980] [<ffff000008ad1484>] prepare_namespace+0x138/0x180</span><br><span class="line">[ 1.461186] [<ffff000008ad0d68>] kernel_init_freeable+0x22c/0x250</span><br><span class="line">[ 1.461406] [<ffff0000087f9800>] kernel_init+0x10/0x100</span><br><span class="line">[ 1.461596] [<ffff000008082e80>] ret_from_fork+0x10/0x50</span><br><span class="line">[ 1.462511] SMP: stopping secondary CPUs</span><br><span class="line">[ 1.463121] Kernel Offset: disabled</span><br><span class="line">[ 1.463866] Memory Limit: none</span><br><span class="line">[ 1.464458] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">C-a h print this help</span><br><span class="line"></span><br><span class="line">C-a x exit emulator</span><br><span class="line"></span><br><span class="line">C-a s save disk data back to file (if -snapshot)</span><br><span class="line"></span><br><span class="line">C-a t toggle console timestamps</span><br><span class="line"></span><br><span class="line">C-a b send break (magic sysrq)</span><br><span class="line"></span><br><span class="line">C-a c switch between console and monitor</span><br><span class="line"></span><br><span class="line">C-a C-a sends C-a</span><br><span class="line"></span><br><span class="line">QEMU: Terminated</span><br><span class="line"></span><br></pre></td></tr></table></figure>]]></content>
<summary type="html">在Qemu上运行Arm64 Linux Kernel</summary>
<category term="kernel" scheme="https://wanix1988.github.io/categories/kernel/"/>
<category term="kernel" scheme="https://wanix1988.github.io/tags/kernel/"/>
</entry>
</feed>