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239 lines
7.7 KiB
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239 lines
7.7 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content=
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"application/xhtml+xml; charset=utf-8" />
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<title>
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6.23. Libcap-2.24
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</title>
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<link rel="stylesheet" type="text/css" href="../stylesheets/lfs.css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
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<link rel="stylesheet" href="../stylesheets/lfs-print.css" type="text/css"
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media="print" />
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</head>
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<body class="lfs" id="lfs-7.7-systemd">
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<div class="navheader">
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<h4>
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Linux From Scratch - Version 7.7-systemd
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</h4>
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<h3>
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第六章 安装基本的系统软件
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</h3>
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<ul>
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<li class="prev">
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<a accesskey="p" href="acl.html" title="Acl-2.2.52">上一页</a>
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<p>
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Acl-2.2.52
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<li class="next">
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<a accesskey="n" href="sed.html" title="Sed-4.2.2">下一页</a>
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<p>
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Sed-4.2.2
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter06.html" title=
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"第六章 安装基本的系统软件">返回</a>
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</li>
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<li class="home">
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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</div>
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<div class="wrap" lang="en" xml:lang="en">
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<h1 class="sect1">
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<a id="ch-system-libcap" name="ch-system-libcap"></a>6.23.
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Libcap-2.24
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</h1>
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<div class="package" lang="en" xml:lang="en">
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<p>
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Libcap 软件包实现了到 Linux 内核可用的 POSIX 1003.1e 功能的用户空间接口。
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这些功能将所有强大 root 权限划分为不同的权限组合。
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</p>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">大概编译时间:</strong>
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<span class="segbody">less than 0.1 SBU</span>
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</div>
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<div class="seg">
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<strong class="segtitle">需要磁盘空间:</strong>
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<span class="segbody">1.8 MB</span>
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</div>
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</div>
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</div>
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</div>
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<div class="installation" lang="en" xml:lang="en">
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<h2 class="sect2">
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6.23.1. 安装 Libcap
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</h2>
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<p>
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编译软件包
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</p>
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<pre class="userinput">
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<kbd class="command">make</kbd>
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</pre>
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<p>
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这个软件包没有测试套件。
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</p>
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<p>
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按软件包：
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</p>
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<pre class="userinput">
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<kbd class="command">make RAISE_SETFCAP=no prefix=/usr install
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chmod -v 755 /usr/lib/libcap.so</kbd>
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</pre>
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<div class="variablelist">
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<p class="title">
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<strong>make 选项的含义：</strong>
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</p>
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<dl class="variablelist">
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<dt>
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<span class="term"><em class=
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"parameter"><code>RAISE_SETFCAP=no</code></em></span>
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</dt>
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<dd>
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<p>
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这个选项跳过尝试对自身使用 <span class=
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"command"><strong>setcap</strong></span>。这可以避免
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内核或文件系统不支持扩展功能时出现安装错误。
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</p>
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</dd>
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</dl>
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</div>
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<p>
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需要移动共享库到<code class=
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"filename">/lib</code>，因此需要重建 <code class=
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"filename">/usr/lib</code> 中的 <code class=
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"filename">.so</code> 文件：
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</p>
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<pre class="userinput">
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<kbd class="command">mv -v /usr/lib/libcap.so.* /lib
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ln -sfv ../../lib/$(readlink /usr/lib/libcap.so) /usr/lib/libcap.so</kbd>
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</pre>
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</div>
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<div class="content" lang="en" xml:lang="en">
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<h2 class="sect2">
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<a id="contents-libcap" name="contents-libcap"></a>6.23.2. Libcap 的内容
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</h2>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">安装的程序:</strong>
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<span class="segbody">capsh, getcap, getpcaps, 以及
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setcap</span>
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</div>
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<div class="seg">
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<strong class="segtitle">安装的库:</strong>
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<span class="segbody">libcap.{a,so}</span>
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</div>
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</div>
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</div>
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<div class="variablelist">
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<h3>
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简要介绍
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</h3>
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<table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top" />
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<col />
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</colgroup>
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<tbody>
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<tr>
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<td>
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<p>
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<a id="capsh" name="capsh"></a><span class=
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"term"><span class=
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"command"><strong>capsh</strong></span></span>
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</p>
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</td>
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<td>
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<p>
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使用和控制功能支持的 shell 封装
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a id="getcap" name="getcap"></a><span class=
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"term"><span class=
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"command"><strong>getcap</strong></span></span>
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</p>
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</td>
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<td>
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<p>
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检查文件功能
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a id="getpcaps" name="getpcaps"></a><span class=
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"term"><span class=
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"command"><strong>getpcaps</strong></span></span>
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</p>
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</td>
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<td>
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<p>
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显示查询进程的功能
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a id="libcap" name="libcap"></a><span class=
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"term"><code class="filename">libcap</code></span>
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</p>
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</td>
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<td>
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<p>
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包括用于管理 POSIX 1003.1e 功能的库函数
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</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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</div>
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<div class="navfooter">
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<div class="book">
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<div class="titlepage">
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<div class="author">
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<span class="firstname">翻译团队：<a href="http://lctt.github.io/" target="_blank">LCTT</a></span>
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<span class="surname">译者/校对：<a href="http://github.com/ictlyh" target="_blank">ictlyh</a>,</span>
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</div>
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</div>
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</div>
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<ul>
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<li class="prev">
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<a accesskey="p" href="acl.html" title="Acl-2.2.52">上一页</a>
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<p>
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Acl-2.2.52
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</p>
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</li>
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<li class="next">
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<a accesskey="n" href="sed.html" title="Sed-4.2.2">下一页</a>
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<p>
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Sed-4.2.2
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter06.html" title=
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"第六章 安装基本的系统软件">返回</a>
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</li>
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<li class="home">
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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</div>
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</body>
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</html>
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