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<?xml version='1.0'?> <!--*-nxml-*-->
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
<!--
Copyright 2014 Anne LoVerso <anne.loverso@students.olin.edu>
SPDX-License-Identifier: LGPL-2.0+
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library. If not, see <https://www.gnu.org/licenses/>.
-->
<refentry id="ostree">
<refentryinfo>
<title>ostree admin init-fs</title>
<productname>OSTree</productname>
</refentryinfo>
<refmeta>
<refentrytitle>ostree admin init-fs</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>ostree-admin-init-fs</refname>
<refpurpose>Initialize a new root filesystem</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>ostree admin init-fs</command> <arg choice="opt" rep="repeat">OPTIONS</arg> <arg choice="req">PATH</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
Initialize an empty physical root filesystem in the designated PATH, with normal toplevels and correct permissions for each directory.
Primarily useful for operating system installers.
</para>
</refsect1>
<refsect1>
<title>Options</title>
<variablelist>
<varlistentry>
<term><option>--modern</option></term>
<listitem><para>
Equivalent to <literal>--epoch=1</literal>.
</para></listitem>
</varlistentry>
<varlistentry>
<term><option>--epoch</option></term>
<listitem><para>
This accepts an integer value in the range [0-1], inclusive. The default is zero
for compatibility.
</para>
<para>
When set to 1, the command will skip adding a number of toplevel "API filesystems"
such as <literal>/proc</literal>
to the toplevel of the physical root. These should be unnecessary, as they
should only be mounted in the final deployment root. The main exception
is <literal>/boot</literal>, which may need to be mounted in some setups
before the target root.
</para>
<para>
Epoch 2 is the same as 1, except that the toplevel <literal>ostree</literal>
directory is mode 0700, denying access from unprivileged code. This
is a new recommended best practice as it avoids access to old configuration
files in <literal>/etc</literal> in previous deployments, as well as
potentially old setuid binaries in <literal>/ostree/repo</literal>.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Example</title>
<para><command>$ mkdir /example</command></para>
<para><command>$ ostree admin init-fs --epoch=1 /example</command></para>
<para><command>$ ls /example </command></para>
<para>
<emphasis>boot</emphasis>
</para>
</refsect1>
</refentry>
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