source: chroot/common/changingowner.xml@ 520cc17

Last change on this file since 520cc17 was c97c572, checked in by Jim Gifford <clfs@…>, 19 years ago

r2395@server (orig r1196): chris | 2006-02-22 23:11:39 -0800
Simplified the Changing Ownership page for boot method

  • Property mode set to 100644
File size: 2.2 KB
RevLine 
[bf8c11f]1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3 "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-chroot-changingowner">
9 <?dbhtml filename="changingowner.html"?>
10
11 <title>Changing Ownership</title>
12
[c97c572]13 <para os="a">Currently, the <filename class="directory">/tools</filename>
[94397ff]14 and <filename class="directory">/cross-tools</filename> directories
15 are owned by the user <emphasis>lfs</emphasis>, a user that
16 exists only on the host system. Although the <filename
17 class="directory">/tools</filename> and <filename
18 class="directory">/cross-tools</filename> directories can be deleted
19 once the LFS system has been finished, they can be retained to build
20 additional LFS systems. If the <filename class="directory">/tools</filename>
21 and <filename class="directory">/cross-tools</filename> directories are
22 kept as is, the files are owned by a user ID without a corresponding
23 account. This is dangerous because a user account created later could
24 get this same user ID and would own the <filename
[dca6da7]25 class="directory">/tools</filename> directory and all the files therein,
[94397ff]26 thus exposing these files to possible malicious manipulation.</para>
[bf8c11f]27
[c97c572]28 <para os="b">To avoid this issue, add the <systemitem
29 class="username">lfs</systemitem> user to the new LFS system later when
30 creating the <filename>/etc/passwd</filename> file, taking care to assign
31 it the same user and group IDs as on the host system. Alternatively,
32 assign the contents of the <filename class="directory">/tools</filename>
33 and <filename class="directory">/cross-tools</filename> directories to
34 user <systemitem class="username">root</systemitem> by running the
35 following commands:</para>
[bf8c11f]36
[c97c572]37<screen os="c"><userinput>chown -Rv 0:0 /tools
[dd9906e]38chown -Rv 0:0 /cross-tools</userinput></screen>
[bf8c11f]39
[c97c572]40 <para os="d">The commands use <parameter>0:0</parameter> instead of
[94397ff]41 <parameter>root:root</parameter>, because <command>chown</command>
[89fe457e]42 is unable to resolve the name <quote>root</quote> until the
43 <filename>passwd</filename> file has been created.</para>
[bf8c11f]44
45</sect1>
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