| 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-boot-changingowner"> |
|---|
| 9 | <?dbhtml filename="changingowner.html"?> |
|---|
| 10 | |
|---|
| 11 | <title>Changing Ownership</title> |
|---|
| 12 | |
|---|
| 13 | <para os="a">Currently, the <filename class="directory">/tools</filename> |
|---|
| 14 | directory is owned by the user <systemitem class="username">lfs</systemitem>, |
|---|
| 15 | a user that exists only on the host system. Although the <filename |
|---|
| 16 | class="directory">/tools</filename> directory can be deleted once the |
|---|
| 17 | LFS system has been finished, it can be retained to build additional |
|---|
| 18 | LFS systems. If the <filename class="directory">/tools</filename> |
|---|
| 19 | directory is kept as is, the files are owned by a user ID without a |
|---|
| 20 | corresponding account. This is dangerous because a user account created |
|---|
| 21 | later could get this same user ID and would own the <filename |
|---|
| 22 | class="directory">/tools</filename> directory and all the files therein, |
|---|
| 23 | thus exposing these files to possible malicious manipulation.</para> |
|---|
| 24 | |
|---|
| 25 | <para os="b">To avoid this issue, add the <systemitem |
|---|
| 26 | class="username">lfs</systemitem> user to the new LFS system later when |
|---|
| 27 | creating the <filename>/etc/passwd</filename> file, taking care to assign |
|---|
| 28 | it the same user and group IDs as on the host system. Alternatively, |
|---|
| 29 | assign the contents of the <filename class="directory">/tools</filename> |
|---|
| 30 | directory to user <systemitem class="username">root</systemitem> by running |
|---|
| 31 | the following command:</para> |
|---|
| 32 | |
|---|
| 33 | <screen><userinput>chown -R 0:0 /tools |
|---|
| 34 | chown -R 0:0 ${LFS}</userinput></screen> |
|---|
| 35 | |
|---|
| 36 | <para os="c">The command uses <parameter>0:0</parameter> instead of |
|---|
| 37 | <parameter>root:root</parameter>, because <command>chown</command> |
|---|
| 38 | is unable to resolve the name <quote>root</quote> until the password |
|---|
| 39 | file has been created. This book assumes you ran this |
|---|
| 40 | <command>chown</command> command.</para> |
|---|
| 41 | |
|---|
| 42 | </sect1> |
|---|
