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authorBruce Dubbs <bdubbs@linuxfromscratch.org>2020-06-07 20:16:00 +0000
committerBruce Dubbs <bdubbs@linuxfromscratch.org>2020-06-07 20:16:00 +0000
commitfcc027677da55c41dcaea045f5b9ff8b088e6495 (patch)
tree42500a7858959695b971e7f28f1d0bf33185db2e /chapter06/libcap.xml
parentd53fefab5a6772fef606392a61608fc290e6a7ae (diff)
Initial commit of alternative cross LFS
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11897 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
- "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
- <!ENTITY % general-entities SYSTEM "../general.ent">
- %general-entities;
-]>
-
-<sect1 id="ch-system-libcap" role="wrap">
- <?dbhtml filename="libcap.html"?>
-
- <sect1info condition="script">
- <productname>libcap</productname>
- <productnumber>&libcap-version;</productnumber>
- <address>&libcap-url;</address>
- </sect1info>
-
- <title>Libcap-&libcap-version;</title>
-
- <indexterm zone="ch-system-libcap">
- <primary sortas="a-Libcap">Libcap</primary>
- </indexterm>
-
- <sect2 role="package">
- <title/>
-
- <para>The Libcap package implements the user-space interfaces to the POSIX
- 1003.1e capabilities available in Linux kernels. These capabilities are a
- partitioning of the all powerful root privilege into a set of distinct
- privileges.</para>
-
- <segmentedlist>
- <segtitle>&buildtime;</segtitle>
- <segtitle>&diskspace;</segtitle>
-
- <seglistitem>
- <seg>&libcap-ch6-sbu;</seg>
- <seg>&libcap-ch6-du;</seg>
- </seglistitem>
- </segmentedlist>
-
- </sect2>
-
- <sect2 role="installation">
- <title>Installation of Libcap</title>
-
- <para>Prevent a static library from being installed:</para>
-
-<screen><userinput remap="pre">sed -i '/install.*STACAPLIBNAME/d' libcap/Makefile</userinput></screen>
-
- <para>Compile the package:</para>
-
-<screen><userinput remap="make">make lib=lib</userinput></screen>
-
- <variablelist>
- <title>The meaning of the make option:</title>
-
- <varlistentry>
- <term><parameter>lib=lib</parameter></term>
- <listitem>
- <para>This parameter sets the library directory to
- <filename>/lib</filename> rather than
- <filename>/lib64</filename> on x86_64. It has no effect on
- x86.</para>
- </listitem>
- </varlistentry>
- </variablelist>
-
- <para>To test the results, issue:</para>
-
-<screen><userinput remap="test">make test</userinput></screen>
-
- <para>Install the package and do some cleanup:</para>
-
-<screen><userinput remap="install">make lib=lib PKGCONFIGDIR=/usr/lib/pkgconfig install
-chmod -v 755 /lib/libcap.so.&libcap-version;
-mv -v /lib/libpsx.a /usr/lib
-rm -v /lib/libcap.so
-ln -sfv ../../lib/libcap.so.2 /usr/lib/libcap.so</userinput></screen>
-
- </sect2>
-
- <sect2 id="contents-libcap" role="content">
- <title>Contents of Libcap</title>
-
- <segmentedlist>
- <segtitle>Installed programs</segtitle>
- <segtitle>Installed library</segtitle>
-
- <seglistitem>
- <seg>capsh, getcap, getpcaps, and setcap</seg>
- <seg>libcap.so and libpsx.a</seg>
- </seglistitem>
- </segmentedlist>
-
- <variablelist>
- <bridgehead renderas="sect3">Short Descriptions</bridgehead>
- <?dbfo list-presentation="list"?>
- <?dbhtml list-presentation="table"?>
-
- <varlistentry id="capsh">
- <term><command>capsh</command></term>
- <listitem>
- <para>A shell wrapper to explore and constrain capability support</para>
- <indexterm zone="ch-system-libcap capsh">
- <primary sortas="b-capsh">capsh</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- <varlistentry id="getcap">
- <term><command>getcap</command></term>
- <listitem>
- <para>Examines file capabilities</para>
- <indexterm zone="ch-system-libcap getcap">
- <primary sortas="b-getcap">getcap</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- <varlistentry id="getpcaps">
- <term><command>getpcaps</command></term>
- <listitem>
- <para>Displays the capabilities on the queried process(es)</para>
- <indexterm zone="ch-system-libcap getpcaps">
- <primary sortas="b-getpcaps">getpcaps</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- <varlistentry id="setcap">
- <term><command>setcap</command></term>
- <listitem>
- <para>Sets file capabilities</para>
- <indexterm zone="ch-system-libcap setcap">
- <primary sortas="b-setcap">setcap</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- <varlistentry id="libcap">
- <term><filename class="libraryfile">libcap</filename></term>
- <listitem>
- <para>Contains the library functions for manipulating POSIX 1003.1e
- capabilities</para>
- <indexterm zone="ch-system-libcap libcap">
- <primary sortas="c-libcap">libcap</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- <varlistentry id="libpsx">
- <term><filename class="libraryfile">libpsx</filename></term>
- <listitem>
- <para>Contains functions to support POSIX semantics for syscalls
- associated with the pthread library</para>
- <indexterm zone="ch-system-libcap libpsx">
- <primary sortas="c-libpsx">libpsx</primary>
- </indexterm>
- </listitem>
- </varlistentry>
-
- </variablelist>
-
- </sect2>
-
-</sect1>