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8ef83047f9
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7325 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
41 lines
1.9 KiB
XML
41 lines
1.9 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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]>
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<sect1 id="ch-system-changingowner">
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<?dbhtml filename="changingowner.html"?>
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<title>Changing Ownership</title>
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<para>Currently, the <filename class="directory">/tools</filename> directory
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is owned by the user <systemitem class="username">lfs</systemitem>, a user
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that exists only on the host system. Although the <filename
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class="directory">/tools</filename> directory can be deleted once the LFS
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system has been finished, it can be retained to build additional LFS systems.
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If the <filename class="directory">/tools</filename> directory is kept as is,
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the files are owned by a user ID without a corresponding account. This is
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dangerous because a user account created later could get this same user ID
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and would own the <filename class="directory">/tools</filename> directory
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and all the files 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 <systemitem class="username">lfs</systemitem>
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user to the new LFS system later when creating the
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<filename>/etc/passwd</filename> file, taking care to assign it the same user
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and group IDs as on the host system. Alternatively, assign the contents of
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the <filename class="directory">/tools</filename> directory to user
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<systemitem class="username">root</systemitem> 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
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<filename>passwd</filename> file has been created.</para>
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</sect1>
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