mirror of
https://github.com/Zeckmathederg/glfs.git
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c8ebc869e4
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@5580 af4574ff-66df-0310-9fd7-8a98e5e911e0
241 lines
7.7 KiB
XML
241 lines
7.7 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY sudo-download-http "http://www.courtesan.com/sudo/dist/sudo-&sudo-version;.tar.gz">
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<!ENTITY sudo-download-ftp " ">
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<!ENTITY sudo-md5sum "b29893c06192df6230dd5f340f3badf5">
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<!ENTITY sudo-size "576 KB">
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<!ENTITY sudo-buildsize "3.6 MB">
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<!ENTITY sudo-time "less than 0.1 SBU">
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]>
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<sect1 id="sudo" xreflabel="sudo-&sudo-version;">
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<?dbhtml filename="sudo.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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<keywordset>
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<keyword role="package">sudo-&sudo-version;.tar</keyword>
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<keyword role="ftpdir">sudo</keyword>
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</keywordset>
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</sect1info>
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<title>Sudo-&sudo-version;</title>
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<indexterm zone="sudo">
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<primary sortas="a-sudo">sudo</primary>
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</indexterm>
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<sect2 role="package">
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<title>Introduction to Sudo</title>
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<para>The <application>sudo</application> package allows a system
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administrator to give certain users (or groups of users) the ability to run
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some (or all) commands as
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<systemitem class="username">root</systemitem> or another user while
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logging the commands and arguments.</para>
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>Download (HTTP): <ulink url="&sudo-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&sudo-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &sudo-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &sudo-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &sudo-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &sudo-time;</para>
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</listitem>
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</itemizedlist>
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<bridgehead renderas="sect3">Additional Downloads</bridgehead>
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<itemizedlist spacing='compact'>
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<listitem>
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<para>Required patch: <ulink
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url="&patch-root;/sudo-&sudo-version;-envvar_fix-1.patch"/></para>
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</listitem>
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</itemizedlist>
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<!--
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<bridgehead renderas="sect3">Sudo Dependencies</bridgehead>
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<bridgehead renderas="sect4">Optional</bridgehead>
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-->
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</sect2>
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<sect2 role="installation">
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<title>Installation of Sudo</title>
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<para>Install <application>sudo</application> by running
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the following commands:</para>
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<screen><userinput>patch -Np1 -i ../sudo-&sudo-version;-envvar_fix-1.patch &&
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./configure --prefix=/usr --libexecdir=/usr/lib \
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--enable-noargs-shell --with-ignore-dot --with-all-insults \
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--enable-shell-sets-home &&
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make</userinput></screen>
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<para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>make install</userinput></screen>
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</sect2>
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<sect2 role="commands">
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<title>Command Explanations</title>
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<para><option>--enable-noargs-shell</option>: This switch allows
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<application>sudo</application> to run a shell if invoked with no
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arguments.</para>
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<para><option>--with-ignore-dot</option>: This switch causes
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<application>sudo</application> to ignore '.' in the PATH.</para>
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<para><option>--with-all-insults</option>: This switch includes all the
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<application>sudo</application> insult sets.</para>
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<para><option>--enable-shell-sets-home</option>: This switch sets HOME to
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the target user in shell mode.</para>
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<note>
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<para>There are many options to <application>sudo</application>'s
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<command>configure</command> command. Check the
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<command>configure --help</command> output for a complete list.</para>
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</note>
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</sect2>
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<sect2 role="configuration">
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<title>Configuring Sudo</title>
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<sect3 id="sudo-config">
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<title>Config File</title>
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<para><filename>/etc/sudoers</filename></para>
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<indexterm zone="sudo sudo-config">
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<primary sortas="e-etc-sudoers">/etc/sudoers</primary>
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</indexterm>
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</sect3>
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<sect3>
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<title>Configuration Information</title>
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<para>The <filename>sudoers</filename> file can be quite complicated. It
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is composed of two types of entries: aliases (basically variables) and
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user specifications (which specify who may run what). The installation
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installs a default configuration that has no privileges installed for any
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user.</para>
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<para>One example usage is to allow the system administrator to execute
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any program without typing a password each time root privileges are
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needed. This can be configured as:</para>
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<screen># User alias specification
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User_Alias ADMIN = YourLoginId
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# Allow people in group ADMIN to run all commands without a password
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ADMIN ALL = NOPASSWD: ALL</screen>
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<para>For details, see <command>man sudoers</command>.</para>
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<note>
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<para>The <application>Sudo</application> developers highly recommend
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using the <command>visudo</command> program to edit the
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<filename>sudoers</filename> file. This will provide basic sanity
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checking like syntax parsing and file permission to avoid some possible
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mistakes that could lead to a vulnerable configuration.</para>
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</note>
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</sect3>
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</sect2>
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<sect2 role="content">
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<title>Contents</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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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>sudo, sudoedit, and visudo</seg>
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<seg>sudo_noexec.so</seg>
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<seg>None</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="sudo_prog">
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<term><command>sudo</command></term>
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<listitem>
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<para>executes a command as another user as permitted by
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the <filename>/etc/sudoers</filename> configuration file.
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</para>
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<indexterm zone="sudo sudo">
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<primary sortas="b-sudo">sudo</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="sudoedit">
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<term><command>sudoedit</command></term>
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<listitem>
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<para>is a hard link to <command>sudo</command> that implies
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the <option>-e</option> option to invoke an editor as another
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user.</para>
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<indexterm zone="sudo sudoedit">
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<primary sortas="b-sudoedit">sudoedit</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="visudo">
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<term><command>visudo</command></term>
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<listitem>
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<para>allows for safer editing of the <filename>sudoers</filename>
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file.</para>
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<indexterm zone="sudo visudo">
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<primary sortas="b-visudo">visudo</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="sudo_noexec">
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<term><filename class='libraryfile'>sudo_noexec.so</filename></term>
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<listitem>
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<para>enables support for the "noexec" functionality which prevents
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a dynamically-linked program being run by sudo from executing
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another program (think shell escapes).</para>
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<indexterm zone="sudo sudo_noexec">
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<primary sortas="c-sudo_noexec">sudo_noexec.so</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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