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man: add more references for extensions to portablectl

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Link in systemd.io and systemd-sysext

Fixes #22146
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Luca Boccassi 2022-01-17 15:11:29 +00:00 committed by Yu Watanabe
parent cd7b60a7ed
commit e91aa2ea23
1 changed files with 9 additions and 4 deletions
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13
man/portablectl.xml
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@ -47,7 +47,8 @@
<para>Portable service images are an efficient way to bundle multiple related services and other units together,
and transfer them as a whole between systems. When these images are attached the local system the contained units
may run in most ways like regular system-provided units, either with full privileges or inside strict sandboxing,
depending on the selected configuration.</para>
depending on the selected configuration. For more details, see
<ulink url="https://systemd.io/PORTABLE_SERVICES">Portable Services</ulink>.</para>
<para>Specifically portable service images may be of the following kind:</para>
@ -359,10 +360,13 @@
top of <replaceable>IMAGE</replaceable> when attaching/detaching. This argument can be specified
multiple times, in which case the order in which images are laid down follows the rules specified in
<citerefentry><refentrytitle>systemd.exec</refentrytitle><manvolnum>5</manvolnum></citerefentry>
for the <varname>ExtensionImages=</varname> directive. The image(s) must contain an
<filename>extension-release</filename> file with metadata that matches what is defined in the
<filename>os-release</filename> of <replaceable>IMAGE</replaceable>. See:
for the <varname>ExtensionImages=</varname> directive and for the
<citerefentry><refentrytitle>systemd-sysext</refentrytitle><manvolnum>8</manvolnum></citerefentry> tool.
The image(s) must contain an <filename>extension-release</filename> file with metadata that matches
what is defined in the <filename>os-release</filename> of <replaceable>IMAGE</replaceable>. See:
<citerefentry><refentrytitle>os-release</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
For more information on portable services with extensions, see the <literal>Extension Images</literal>
paragraph on <ulink url="https://systemd.io/PORTABLE_SERVICES">Portable Services</ulink>.
</para>
<para>Note that the same extensions have to be specified, in the same order, when attaching
@ -451,6 +455,7 @@
<title>See Also</title>
<para>
<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-sysext</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
<citerefentry><refentrytitle>org.freedesktop.portable1</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
<citerefentry><refentrytitle>systemd-portabled.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
</para>