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man: mention that ProtectSystem= also takes care of /efi

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Zbigniew Jędrzejewski-Szmek 2020-04-29 18:22:46 +02:00
parent f46ba93944
commit 26b8190841
1 changed files with 5 additions and 4 deletions
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9
man/systemd.exec.xml
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@ -891,10 +891,11 @@ CapabilityBoundingSet=~CAP_B CAP_C</programlisting>
<term><varname>ProtectSystem=</varname></term>
<listitem><para>Takes a boolean argument or the special values <literal>full</literal> or
<literal>strict</literal>. If true, mounts the <filename>/usr</filename> and <filename>/boot</filename>
directories read-only for processes invoked by this unit. If set to <literal>full</literal>, the
<filename>/etc</filename> directory is mounted read-only, too. If set to <literal>strict</literal> the entire
file system hierarchy is mounted read-only, except for the API file system subtrees <filename>/dev</filename>,
<literal>strict</literal>. If true, mounts the <filename>/usr</filename> and the boot loader
directories (<filename>/boot</filename> and <filename>/efi</filename>) read-only for processes
invoked by this unit. If set to <literal>full</literal>, the <filename>/etc</filename> directory is
mounted read-only, too. If set to <literal>strict</literal> the entire file system hierarchy is
mounted read-only, except for the API file system subtrees <filename>/dev</filename>,
<filename>/proc</filename> and <filename>/sys</filename> (protect these directories using
<varname>PrivateDevices=</varname>, <varname>ProtectKernelTunables=</varname>,
<varname>ProtectControlGroups=</varname>). This setting ensures that any modification of the vendor-supplied