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man: document that ReadOnlyPaths= doesn't affect ability to connect to AF_UNIX

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Fixes: #23470
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Lennart Poettering 2024-04-22 13:02:08 +02:00
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man/systemd.exec.xml
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@ -1383,6 +1383,11 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
accessible to privileged processes. However, most namespacing settings, that will not work on their own in user
services, will work when used in conjunction with <varname>PrivateUsers=</varname><option>true</option>.</para>
<para>Note that the various options that turn directories read-only (such as
<varname>ProtectSystem=</varname>, <varname>ReadOnlyPaths=</varname>, …) do not affect the ability for
programs to connect to and communicate with <constant>AF_UNIX</constant> sockets in these
directores. These options cannot be used to lock down access to IPC services hence.</para>
<variablelist class='unit-directives'>
<varlistentry>