current system.</para>
</refsect1>
- <refsect1>
- <title>Options</title>
- <para>The following options are understood:</para>
-
- <variablelist>
- <varlistentry>
- <term><option>--esp-path=</option></term>
- <listitem><para>Path to the EFI System Partition (ESP). If not specified, <filename>/efi/</filename>,
- <filename>/boot/</filename>, and <filename>/boot/efi</filename> are checked in turn. It is recommended to mount
- the ESP to <filename>/efi/</filename>, if possible.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--boot-path=</option></term>
- <listitem><para>Path to the Extended Boot Loader partition, as defined in the <ulink
- url="https://systemd.io/BOOT_LOADER_SPECIFICATION">Boot Loader Specification</ulink>. If not
- specified, <filename>/boot/</filename> are checked. It is recommended to mount the Extended Boot
- Loader partition to <filename>/boot/</filename>, if possible.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-p</option></term>
- <term><option>--print-esp-path</option></term>
- <listitem><para>This option modifies the behaviour of <command>status</command>. Only prints the path
- to the EFI System Partition (ESP) to standard output and exits.</para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>-x</option></term>
- <term><option>--print-boot-path</option></term>
- <listitem><para>This option modifies the behaviour of <command>status</command>. Only prints the path
- to the Extended Boot Loader partition if it exists, and the path to the ESP otherwise to standard
- output and exit. This command is useful to determine where to place boot loader entries, as they are
- preferably placed in the Extended Boot Loader partition if it exists and in the ESP otherwise.
- </para></listitem>
- </varlistentry>
-
- <varlistentry>
- <term><option>--no-variables</option></term>
- <listitem><para>Do not touch the firmware's boot loader list stored in EFI variables.</para></listitem>
- </varlistentry>
-
- <xi:include href="standard-options.xml" xpointer="no-pager"/>
- <xi:include href="standard-options.xml" xpointer="help"/>
- <xi:include href="standard-options.xml" xpointer="version"/>
- </variablelist>
- </refsect1>
-
<refsect1>
<title>Commands</title>
<variablelist>
and the firmware's boot loader list.</para></listitem>
</varlistentry>
+ <varlistentry>
+ <term><option>is-installed</option></term>
+
+ <listitem><para>Checks whether <command>systemd-boot</command> is installed in the ESP. Note that a
+ single ESP might host multiple boot loaders; this hence checks whether
+ <command>systemd-boot</command> is one (of possibly many) installed boot loaders — and neither
+ whether it is the default nor whether it is registered in any EFI variables.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>random-seed</option></term>
+
+ <listitem><para>Generates a random seed and stores it in the EFI System Partition, for use by the
+ <command>systemd-boot</command> boot loader. Also, generates a random 'system token' and stores it
+ persistently as an EFI variable, if one has not been set before. If the boot loader finds the random
+ seed in the ESP and the system token in the EFI variable it will derive a random seed to pass to the
+ OS and a new seed to store in the ESP from the combination of both. The random seed passed to the OS
+ is credited to the kernel's entropy pool by the system manager during early boot, and permits
+ userspace to boot up with an entropy pool fully initialized very early on. Also see
+ <citerefentry><refentrytitle>systemd-boot-system-token.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.</para>
+
+ <para>See <ulink url="https://systemd.io/RANDOM_SEEDS">Random Seeds</ulink> for further
+ information.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>systemd-efi-options</option> <optional><replaceable>VALUE</replaceable></optional></term>
+
+ <listitem><para>When called without the optional argument, prints the current value of the
+ <literal>SystemdOptions</literal> EFI variable. When called with an argument, sets the
+ variable to that value. See
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ for the meaning of that variable.</para></listitem>
+ </varlistentry>
+
<varlistentry>
<term><option>list</option></term>
</variablelist>
</refsect1>
+ <refsect1>
+ <title>Options</title>
+ <para>The following options are understood:</para>
+
+ <variablelist>
+ <varlistentry>
+ <term><option>--esp-path=</option></term>
+ <listitem><para>Path to the EFI System Partition (ESP). If not specified, <filename>/efi/</filename>,
+ <filename>/boot/</filename>, and <filename>/boot/efi/</filename> are checked in turn. It is
+ recommended to mount the ESP to <filename>/efi/</filename>, if possible.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--boot-path=</option></term>
+ <listitem><para>Path to the Extended Boot Loader partition, as defined in the <ulink
+ url="https://systemd.io/BOOT_LOADER_SPECIFICATION">Boot Loader Specification</ulink>. If not
+ specified, <filename>/boot/</filename> is checked. It is recommended to mount the Extended Boot
+ Loader partition to <filename>/boot/</filename>, if possible.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-p</option></term>
+ <term><option>--print-esp-path</option></term>
+ <listitem><para>This option modifies the behaviour of <command>status</command>. Only prints the path
+ to the EFI System Partition (ESP) to standard output and exits.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>-x</option></term>
+ <term><option>--print-boot-path</option></term>
+ <listitem><para>This option modifies the behaviour of <command>status</command>. Only prints the path
+ to the Extended Boot Loader partition if it exists, and the path to the ESP otherwise to standard
+ output and exit. This command is useful to determine where to place boot loader entries, as they are
+ preferably placed in the Extended Boot Loader partition if it exists and in the ESP otherwise.</para>
+
+ <para>Boot Loader Specification Type #1 entries should generally be placed in the directory
+ <literal>$(bootctl -x)/loader/entries/</literal>. Existence of that directory may also be used as
+ indication that boot loader entry support is available on the system. Similarly, Boot Loader
+ Specification Type #2 entries should be placed in the directory <literal>$(bootctl
+ -x)/EFI/Linux/</literal>.</para>
+
+ <para>Note that this option (similar to the <option>--print-booth-path</option> option mentioned
+ above), is available independently from the boot loader used, i.e. also without
+ <command>systemd-boot</command> being installed.</para></listitem>
+ </varlistentry>
+
+ <varlistentry>
+ <term><option>--no-variables</option></term>
+ <listitem><para>Do not touch the firmware's boot loader list stored in EFI variables.</para></listitem>
+ </varlistentry>
+
+ <xi:include href="standard-options.xml" xpointer="no-pager"/>
+ <xi:include href="standard-options.xml" xpointer="help"/>
+ <xi:include href="standard-options.xml" xpointer="version"/>
+ </variablelist>
+ </refsect1>
+
<refsect1>
<title>Exit status</title>
<para>On success, 0 is returned, a non-zero failure code otherwise.</para>
<para>
<citerefentry><refentrytitle>systemd-boot</refentrytitle><manvolnum>7</manvolnum></citerefentry>,
<ulink url="https://systemd.io/BOOT_LOADER_SPECIFICATION">Boot Loader Specification</ulink>,
- <ulink url="https://systemd.io/BOOT_LOADER_INTERFACE">Boot Loader Interface</ulink>
+ <ulink url="https://systemd.io/BOOT_LOADER_INTERFACE">Boot Loader Interface</ulink>,
+ <citerefentry><refentrytitle>systemd-boot-system-token.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>
</refsect1>
</refentry>
projects / thirdparty / systemd.git / blobdiff