1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 |
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7 | <!-- Inserted as a reminder to do this. The mention of a test suite
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8 | is usually right before the root user installation commands. Please
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9 | delete these 12 (including one blank) lines after you are done.-->
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10 |
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11 | <!-- Use one of the two mentions below about a test suite,
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12 | delete the line that is not applicable. Of course, if the
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13 | test suite uses syntax other than "make check", revise the
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14 | line to reflect the actual syntax to run the test suite -->
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15 |
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16 | <!-- <para>This package does not come with a test suite.</para> -->
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17 | <!-- <para>To test the results, issue: <command>make check</command>.</para> -->
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18 |
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19 | <!ENTITY sudo-download-http "http://www.courtesan.com/sudo/dist/sudo-&sudo-version;.tar.gz">
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20 | <!ENTITY sudo-download-ftp " ">
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21 | <!ENTITY sudo-md5sum "b29893c06192df6230dd5f340f3badf5">
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22 | <!ENTITY sudo-size "576 KB">
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23 | <!ENTITY sudo-buildsize "3.6 MB">
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24 | <!ENTITY sudo-time "less than 0.1 SBU">
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25 | ]>
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26 |
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27 | <sect1 id="sudo" xreflabel="sudo-&sudo-version;">
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28 | <?dbhtml filename="sudo.html"?>
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29 |
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30 | <sect1info>
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31 | <othername>$LastChangedBy$</othername>
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32 | <date>$Date$</date>
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33 | </sect1info>
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34 |
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35 | <title>Sudo-&sudo-version;</title>
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36 |
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37 | <indexterm zone="sudo">
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38 | <primary sortas="a-sudo">sudo</primary>
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39 | </indexterm>
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40 |
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41 | <sect2 role="package">
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42 | <title>Introduction to Sudo</title>
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43 |
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44 | <para>The <application>sudo</application> package allows a system
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45 | administrator to give certain users (or groups of users) the ability to run
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46 | some (or all) commands as
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47 | <systemitem class="username">root</systemitem> or another user while
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48 | logging the commands and arguments.</para>
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49 |
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50 | <bridgehead renderas="sect3">Package Information</bridgehead>
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51 | <itemizedlist spacing="compact">
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52 | <listitem>
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53 | <para>Download (HTTP): <ulink url="&sudo-download-http;"/></para>
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54 | </listitem>
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55 | <listitem>
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56 | <para>Download (FTP): <ulink url="&sudo-download-ftp;"/></para>
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57 | </listitem>
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58 | <listitem>
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59 | <para>Download MD5 sum: &sudo-md5sum;</para>
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60 | </listitem>
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61 | <listitem>
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62 | <para>Download size: &sudo-size;</para>
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63 | </listitem>
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64 | <listitem>
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65 | <para>Estimated disk space required: &sudo-buildsize;</para>
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66 | </listitem>
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67 | <listitem>
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68 | <para>Estimated build time: &sudo-time;</para>
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69 | </listitem>
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70 | </itemizedlist>
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71 |
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72 | <bridgehead renderas="sect3">Additional Downloads</bridgehead>
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73 | <itemizedlist spacing='compact'>
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74 | <listitem>
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75 | <para>Required patch: <ulink
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76 | url="&patch-root;/sudo-&sudo-version;-envvar_fix-1.patch"/></para>
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77 | </listitem>
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78 | </itemizedlist>
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79 | <!--
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80 | <bridgehead renderas="sect3">Sudo Dependencies</bridgehead>
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81 |
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82 | <bridgehead renderas="sect4">Optional</bridgehead>
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83 | -->
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84 |
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85 | <para condition="html" role="usernotes">User Notes:
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86 | <ulink url="&blfs-wiki;/sudo"/></para>
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87 |
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88 | </sect2>
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89 |
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90 | <sect2 role="installation">
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91 | <title>Installation of Sudo</title>
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92 |
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93 | <para>Install <application>sudo</application> by running
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94 | the following commands:</para>
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95 |
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96 | <screen><userinput>patch -Np1 -i ../sudo-&sudo-version;-envvar_fix-1.patch &&
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97 | ./configure --prefix=/usr --libexecdir=/usr/lib \
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98 | --enable-noargs-shell --with-ignore-dot --with-all-insults \
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99 | --enable-shell-sets-home &&
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100 | make</userinput></screen>
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101 |
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102 | <para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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103 |
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104 | <screen role="root"><userinput>make install</userinput></screen>
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105 |
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106 | </sect2>
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107 |
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108 | <sect2 role="commands">
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109 | <title>Command Explanations</title>
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110 |
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111 | <para><option>--enable-noargs-shell</option>: This switch allows
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112 | <application>sudo</application> to run a shell if invoked with no
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113 | arguments.</para>
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114 |
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115 | <para><option>--with-ignore-dot</option>: This switch causes
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116 | <application>sudo</application> to ignore '.' in the PATH.</para>
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117 |
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118 | <para><option>--with-all-insults</option>: This switch includes all the
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119 | <application>sudo</application> insult sets.</para>
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120 |
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121 | <para><option>--enable-shell-sets-home</option>: This switch sets HOME to
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122 | the target user in shell mode.</para>
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123 |
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124 | <note>
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125 | <para>There are many options to <application>sudo</application>'s
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126 | <command>configure</command> command. Check the
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127 | <command>configure --help</command> output for a complete list.</para>
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128 | </note>
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129 |
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130 | </sect2>
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131 |
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132 | <sect2 role="configuration">
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133 | <title>Configuring Sudo</title>
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134 |
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135 | <sect3 id="sudo-config">
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136 | <title>Config File</title>
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137 |
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138 | <para><filename>/etc/sudoers</filename></para>
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139 |
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140 | <indexterm zone="sudo sudo-config">
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141 | <primary sortas="e-etc-sudoers">/etc/sudoers</primary>
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142 | </indexterm>
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143 |
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144 | </sect3>
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145 |
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146 | <sect3>
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147 | <title>Configuration Information</title>
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148 |
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149 | <para>The <filename>sudoers</filename> file can be quite complicated. It
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150 | is composed of two types of entries: aliases (basically variables) and
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151 | user specifications (which specify who may run what). The installation
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152 | installs a default configuration that has no privileges installed for any
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153 | user.</para>
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154 |
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155 | <para>One example usage is to allow the system administrator to execute
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156 | any program without typing a password each time root privileges are
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157 | needed. This can be configured as:</para>
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158 |
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159 | <screen># User alias specification
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160 | User_Alias ADMIN = YourLoginId
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161 |
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162 | # Allow people in group ADMIN to run all commands without a password
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163 | ADMIN ALL = NOPASSWD: ALL</screen>
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164 |
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165 | <para>For details, see <command>man sudoers</command>.</para>
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166 |
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167 | <note>
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168 | <para>The <application>Sudo</application> developers highly recommend
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169 | using the <command>visudo</command> program to edit the
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170 | <filename>sudoers</filename> file. This will provide basic sanity
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171 | checking like syntax parsing and file permission to avoid some possible
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172 | mistakes that could lead to a vulnerable configuration.</para>
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173 | </note>
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174 |
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175 | </sect3>
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176 |
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177 | </sect2>
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178 |
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179 | <sect2 role="content">
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180 | <title>Contents</title>
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181 |
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182 | <segmentedlist>
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183 | <segtitle>Installed Programs</segtitle>
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184 | <segtitle>Installed Library</segtitle>
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185 | <segtitle>Installed Directories</segtitle>
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186 |
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187 | <seglistitem>
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188 | <seg>sudo, sudoedit, and visudo</seg>
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189 | <seg>sudo_noexec.so</seg>
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190 | <seg>None</seg>
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191 | </seglistitem>
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192 | </segmentedlist>
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193 |
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194 | <variablelist>
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195 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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196 | <?dbfo list-presentation="list"?>
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197 | <?dbhtml list-presentation="table"?>
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198 |
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199 | <varlistentry id="sudo_prog">
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200 | <term><command>sudo</command></term>
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201 | <listitem>
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202 | <para>executes a command as another user as permitted by
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203 | the <filename>/etc/sudoers</filename> configuration file.
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204 | </para>
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205 | <indexterm zone="sudo sudo">
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206 | <primary sortas="b-sudo">sudo</primary>
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207 | </indexterm>
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208 | </listitem>
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209 | </varlistentry>
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210 |
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211 | <varlistentry id="sudoedit">
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212 | <term><command>sudoedit</command></term>
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213 | <listitem>
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214 | <para>is a hard link to <command>sudo</command> that implies
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215 | the <option>-e</option> option to invoke an editor as another
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216 | user.</para>
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217 | <indexterm zone="sudo sudoedit">
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218 | <primary sortas="b-sudoedit">sudoedit</primary>
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219 | </indexterm>
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220 | </listitem>
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221 | </varlistentry>
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222 |
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223 | <varlistentry id="visudo">
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224 | <term><command>visudo</command></term>
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225 | <listitem>
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226 | <para>allows for safer editing of the <filename>sudoers</filename>
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227 | file.</para>
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228 | <indexterm zone="sudo visudo">
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229 | <primary sortas="b-visudo">visudo</primary>
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230 | </indexterm>
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231 | </listitem>
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232 | </varlistentry>
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233 |
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234 |
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235 | <varlistentry id="sudo_noexec">
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236 | <term><filename class='libraryfile'>sudo_noexec.so</filename></term>
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237 | <listitem>
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238 | <para>enables support for the "noexec" functionality which prevents
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239 | a dynamically-linked program being run by sudo from executing
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240 | another program (think shell escapes).</para>
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241 | <indexterm zone="sudo sudo_noexec">
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242 | <primary sortas="c-sudo_noexec">sudo_noexec.so</primary>
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243 | </indexterm>
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244 | </listitem>
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245 | </varlistentry>
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246 |
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247 | </variablelist>
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248 |
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249 | </sect2>
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250 |
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251 | </sect1>
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