mirror of
https://git.linuxfromscratch.org/lfs.git
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163 lines
4.8 KiB
XML
163 lines
4.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-system-libcap" role="wrap">
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<?dbhtml filename="libcap.html"?>
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<sect1info condition="script">
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<productname>libcap</productname>
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<productnumber>&libcap-version;</productnumber>
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<address>&libcap-url;</address>
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</sect1info>
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<title>Libcap-&libcap-version;</title>
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<indexterm zone="ch-system-libcap">
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<primary sortas="a-Libcap">Libcap</primary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>The Libcap package implements the userspace interface to the POSIX
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1003.1e capabilities available in Linux kernels. These capabilities
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partition the all-powerful root privilege into a set of distinct
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privileges.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem>
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<seg>&libcap-fin-sbu;</seg>
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<seg>&libcap-fin-du;</seg>
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</seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Libcap</title>
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<para>Prevent static libraries from being installed:</para>
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<screen><userinput remap="pre">sed -i '/install -m.*STA/d' libcap/Makefile</userinput></screen>
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<para>Compile the package:</para>
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<screen><userinput remap="make">make prefix=/usr lib=lib</userinput></screen>
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<variablelist>
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<title>The meaning of the make option:</title>
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<varlistentry>
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<term><parameter>lib=lib</parameter></term>
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<listitem>
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<para>This parameter sets the library directory to
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<filename>/usr/lib</filename> rather than
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<filename>/usr/lib64</filename> on x86_64. It has no effect on
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x86.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>To test the results, issue:</para>
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<screen><userinput remap="test">make test</userinput></screen>
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<para>Install the package:</para>
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<screen><userinput remap="install">make prefix=/usr lib=lib install</userinput></screen>
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</sect2>
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<sect2 id="contents-libcap" role="content">
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<title>Contents of Libcap</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<segtitle>Installed library</segtitle>
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<seglistitem>
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<seg>capsh, getcap, getpcaps, and setcap</seg>
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<seg>libcap.so and libpsx.so</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="capsh">
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<term><command>capsh</command></term>
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<listitem>
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<para>A shell wrapper to explore and constrain capability support</para>
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<indexterm zone="ch-system-libcap capsh">
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<primary sortas="b-capsh">capsh</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="getcap">
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<term><command>getcap</command></term>
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<listitem>
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<para>Examines file capabilities</para>
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<indexterm zone="ch-system-libcap getcap">
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<primary sortas="b-getcap">getcap</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="getpcaps">
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<term><command>getpcaps</command></term>
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<listitem>
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<para>Displays the capabilities of the queried process(es)</para>
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<indexterm zone="ch-system-libcap getpcaps">
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<primary sortas="b-getpcaps">getpcaps</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="setcap">
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<term><command>setcap</command></term>
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<listitem>
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<para>Sets file capabilities</para>
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<indexterm zone="ch-system-libcap setcap">
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<primary sortas="b-setcap">setcap</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libcap">
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<term><filename class="libraryfile">libcap</filename></term>
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<listitem>
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<para>Contains the library functions for manipulating POSIX 1003.1e
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capabilities</para>
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<indexterm zone="ch-system-libcap libcap">
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<primary sortas="c-libcap">libcap</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="libpsx">
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<term><filename class="libraryfile">libpsx</filename></term>
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<listitem>
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<para>Contains functions to support POSIX semantics for syscalls
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associated with the pthread library</para>
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<indexterm zone="ch-system-libcap libpsx">
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<primary sortas="c-libpsx">libpsx</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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