From 36b95d04408916c5babcfc2aa2a1efd8bbc1cd60 Mon Sep 17 00:00:00 2001
From: Luca Boccassi <bluca@debian.org>
Date: Tue, 12 Jan 2021 19:30:49 +0000
Subject: [PATCH] man: mention SYSEXT_LEVEL in os-release(5)

---
 man/os-release.xml | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/man/os-release.xml b/man/os-release.xml
index 674180679b..5a0cfd2887 100644
--- a/man/os-release.xml
+++ b/man/os-release.xml
@@ -317,6 +317,17 @@
         </para></listitem>
       </varlistentry>
 
+      <varlistentry>
+        <term><varname>SYSEXT_LEVEL=</varname></term>
+
+        <listitem><para>A lower-case string (mostly numeric, no spaces or other characters outside of 0–9,
+        a–z, ".", "_" and "-") identifying the operating system extensions support level, to indicate which
+        extension images are supported (See:
+        <citerefentry><refentrytitle>systemd-sysext</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
+        Example: <literal>SYSEXT_LEVEL=2</literal> or
+        <literal>SYSEXT_LEVEL=15.14</literal>.</para></listitem>
+      </varlistentry>
+
     </variablelist>
 
     <para>If you are reading this file from C code or a shell script
-- 
2.25.1