1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.4/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 |
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8 | <sect1 id="ch-system-changingowner">
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9 | <?dbhtml filename="changingowner.html"?>
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10 |
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11 | <title>Changing Ownership</title>
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12 |
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13 | <para>Currently, the <filename class="directory">/tools</filename> directory
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14 | is owned by the user <systemitem class="username">lfs</systemitem>, a user
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15 | that exists only on the host system. Although the <filename
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16 | class="directory">/tools</filename> directory can be deleted once the LFS
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17 | system has been finished, it can be retained to build additional LFS systems.
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18 | If the <filename class="directory">/tools</filename> directory is kept as is,
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19 | the files are owned by a user ID without a corresponding account. This is
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20 | dangerous because a user account created later could get this same user ID
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21 | and would own the <filename class="directory">/tools</filename> directory
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22 | and all the files therein, thus exposing these files to possible malicious
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23 | manipulation.</para>
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24 |
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25 | <para>To avoid this issue, add the <systemitem class="username">lfs</systemitem>
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26 | user to the new LFS system later when creating the
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27 | <filename>/etc/passwd</filename> file, taking care to assign it the same user
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28 | and group IDs as on the host system. Alternatively, assign the contents of
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29 | the <filename class="directory">/tools</filename> directory to user
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30 | <systemitem class="username">root</systemitem> by running the following
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31 | command:</para>
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32 |
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33 | <screen><userinput>chown -R 0:0 /tools</userinput></screen>
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34 |
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35 | <para>The command uses <parameter>0:0</parameter> instead of
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36 | <parameter>root:root</parameter>, because <command>chown</command>
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37 | is unable to resolve the name <quote>root</quote> until the
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38 | <filename>passwd</filename> file has been created.</para>
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39 |
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40 | </sect1>
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