source: postlfs/security/libcap.xml@ 77554c93

10.0 10.1 11.0 9.0 9.1 ken/refactor-virt lazarus qt5new trunk upgradedb xry111/git-date xry111/git-date-for-trunk xry111/git-date-test
Last change on this file since 77554c93 was 77554c93, checked in by DJ Lucas <dj@…>, 3 years ago

Fix libcap instructions.

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@21637 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 4.2 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY libcap-download-http "&kernel-dl;/linux/libs/security/linux-privs/libcap2/libcap-&libcap-version;.tar.xz">
8 <!ENTITY libcap-download-ftp " ">
9 <!ENTITY libcap-md5sum "2e8f9fab32eb5ccb37969fe317fd17aa">
10 <!ENTITY libcap-size "68 KB">
11 <!ENTITY libcap-buildsize "620 KB">
12 <!ENTITY libcap-time "less than 0.1 SBU">
13]>
14
15<sect1 id="libcap-pam" xreflabel="libcap-&libcap-version; with PAM">
16 <?dbhtml filename="libcap.html"?>
17
18 <sect1info>
19 <othername>$LastChangedBy$</othername>
20 <date>$Date$</date>
21 </sect1info>
22
23 <title>libcap-&libcap-version; with PAM</title>
24
25 <indexterm zone="libcap-pam">
26 <primary sortas="a-libcap-pam">libcap</primary>
27 </indexterm>
28
29 <sect2 role="package">
30 <title>Introduction to libcap with PAM</title>
31
32 <para>The <application>libcap</application> package was installed in
33 LFS, but if <application>Linux-PAM</application> support is desired,
34 the PAM module must be built (after installation of
35 <application>Linux-PAM</application>).</para>
36
37 &lfs84_checked;
38
39 <bridgehead renderas="sect3">Package Information</bridgehead>
40 <itemizedlist spacing="compact">
41 <listitem>
42 <para>Download (HTTP): <ulink url="&libcap-download-http;"/></para>
43 </listitem>
44 <listitem>
45 <para>Download (FTP): <ulink url="&libcap-download-ftp;"/></para>
46 </listitem>
47 <listitem>
48 <para>Download MD5 sum: &libcap-md5sum;</para>
49 </listitem>
50 <listitem>
51 <para>Download size: &libcap-size;</para>
52 </listitem>
53 <listitem>
54 <para>Estimated disk space required: &libcap-buildsize;</para>
55 </listitem>
56 <listitem>
57 <para>Estimated build time: &libcap-time;</para>
58 </listitem>
59 </itemizedlist>
60
61 <bridgehead renderas="sect3">libcap Dependencies</bridgehead>
62
63 <bridgehead renderas="sect4">Required</bridgehead>
64 <para role="required">
65 <xref linkend="linux-pam"/>
66 </para>
67
68 <para condition="html" role="usernotes">User Notes:
69 <ulink url="&blfs-wiki;/libcap"/></para>
70
71 </sect2>
72
73 <sect2 role="installation">
74 <title>Installation of libcap</title>
75
76 <para>Install <application>libcap</application> by running the following
77 commands:</para>
78
79<screen><userinput>make -C pam_cap</userinput></screen>
80
81 <para>This package does not come with a test suite.</para>
82
83 <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
84
85<screen role="root"><userinput>install -v -m755 pam_cap/pam_cap.so /lib/security &amp;&amp;
86install -v -m644 pam_cap/capability.conf /etc/security</userinput></screen>
87
88 </sect2>
89
90 <sect2 role="configuration">
91 <title>Configuring Libcap</title>
92
93 <para>In order to allow <application>Linux-PAM</application> to grant
94 privileges based on POSIX capabilites, you need to add the libcap module
95 to the begining of the <filename>/etc/pam.d/system-auth</filename> file.
96 Make the required edits with the following commands:</para>
97
98<screen role="root"><userinput>mv -v /etc/pam.d/system-auth{,.bak} &amp;&amp;
99cat &gt; /etc/pam.d/system-auth &lt;&lt; "EOF" &amp;&amp;
100# Begin /etc/pam.d/system-auth
101
102auth optional pam_cap.so
103EOF
104tail -n +3 /etc/pam.d/system-auth.bak &gt;&gt; /etc/pam.d/system-auth</userinput></screen>
105
106 <para>Additonally, you'll need to modify the
107 <filename>/etc/security/capability.conf</filename> file to grant necessary
108 privileges to users, and utilize the <application>setcap</application>
109 utiltiy to set capabilities on specific utilities as needed. See
110 <command>man 8 setcap</command> and <command>man 3 cap_from_text</command>
111 for additional information.</para>
112
113 </sect2>
114
115 <sect2 role="content">
116 <title>Contents</title>
117
118 <segmentedlist>
119 <segtitle>Installed Programs</segtitle>
120 <segtitle>Installed Library</segtitle>
121 <segtitle>Installed Directories</segtitle>
122
123 <seglistitem>
124 <seg>None</seg>
125 <seg>pam_cap.so</seg>
126 <seg>None</seg>
127 </seglistitem>
128 </segmentedlist>
129
130 </sect2>
131
132</sect1>
Note: See TracBrowser for help on using the repository browser.