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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@4648 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
41 lines
1.8 KiB
XML
41 lines
1.8 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "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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]>
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<sect1 id="ch-system-changingowner">
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<title>Changing Ownership</title>
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<?dbhtml filename="changingowner.html"?>
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<para>Currently, the <filename class="directory">/tools</filename>
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directory is owned by the user <emphasis>lfs</emphasis>, a user that
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exists only on the host system. Although the <filename
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class="directory">/tools</filename> directory can be deleted once the
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LFS system has been finished, it can be retained to build additional
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LFS systems. If the <filename class="directory">/tools</filename>
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directory is kept as is, the files are owned by a user ID without a
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corresponding account. This is dangerous because a user account
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created later could get this same user ID and would own the <filename
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class="directory">/tools</filename> directory and all the files
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therein, thus exposing these files to possible malicious
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manipulation.</para>
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<para>To avoid this issue, add the <emphasis>lfs</emphasis> user to
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the new LFS system later when creating the
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<filename>/etc/passwd</filename> file, taking care to assign it the
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same user and group IDs as on the host system. Alternatively, assign
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the contents of the <filename class="directory">/tools</filename>
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directory to user <emphasis>root</emphasis> by running the following
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command:</para>
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<screen><userinput>chown -R 0:0 /tools</userinput></screen>
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<para>The command uses <parameter>0:0</parameter> instead of
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<parameter>root:root</parameter>, because <command>chown</command>
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is unable to resolve the name <quote>root</quote> until the password
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file has been created. This book assumes you ran this
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<command>chown</command> command.</para>
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</sect1>
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