man: note that mixing sd-nsresourced and /etc/subuid is unsupported

2026-08-24 13:22:56 +01:00
parent d669464b2a
commit e8e852fa76
1 changed files with 5 additions and 0 deletions
@@ -92,6 +92,11 @@
    <para>This service provides one <ulink url="https://varlink.org/">Varlink</ulink> service:
    <constant>io.systemd.NamespaceResource</constant> allows registering user namespaces, and assign mounts,
    cgroups and network interfaces to it.</para>
+
+    <para>Note that combining usage of <command>systemd-nsresourced</command> and systems based on
+    <filename>/etc/subuid</filename> and <filename>/etc/subgid</filename> might result in undefined
+    behavior if UID or GID ranges defined in those files overlap with the UID or GID ranges used by
+    nsresourced (the foreign UID range).</para>
  </refsect1>

  <refsect1>