34 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
		
		
			
		
	
	
			34 lines
		
	
	
		
			1.1 KiB
		
	
	
	
		
			XML
		
	
	
	
	
	
| 
								 | 
							
								<chapter xmlns="http://docbook.org/ns/docbook"
							 | 
						||
| 
								 | 
							
								         xmlns:xlink="http://www.w3.org/1999/xlink"
							 | 
						||
| 
								 | 
							
								         xmlns:xi="http://www.w3.org/2001/XInclude"
							 | 
						||
| 
								 | 
							
								         version="5.0"
							 | 
						||
| 
								 | 
							
								         xml:id="sec-hidepid">
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								  <title>Hiding process information</title>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								  <para>
							 | 
						||
| 
								 | 
							
								    Setting
							 | 
						||
| 
								 | 
							
								    <programlisting>
							 | 
						||
| 
								 | 
							
								      security.hideProcessInformation = true;
							 | 
						||
| 
								 | 
							
								    </programlisting>
							 | 
						||
| 
								 | 
							
								    ensures that access to process information is restricted to the
							 | 
						||
| 
								 | 
							
								    owning user.  This implies, among other things, that command-line
							 | 
						||
| 
								 | 
							
								    arguments remain private.  Unless your deployment relies on unprivileged
							 | 
						||
| 
								 | 
							
								    users being able to inspect the process information of other users, this
							 | 
						||
| 
								 | 
							
								    option should be safe to enable.
							 | 
						||
| 
								 | 
							
								  </para>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								  <para>
							 | 
						||
| 
								 | 
							
								    Members of the <literal>proc</literal> group are exempt from process
							 | 
						||
| 
								 | 
							
								    information hiding.
							 | 
						||
| 
								 | 
							
								  </para>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								  <para>
							 | 
						||
| 
								 | 
							
								    To allow a service <replaceable>foo</replaceable> to run without process information hiding, set
							 | 
						||
| 
								 | 
							
								    <programlisting>
							 | 
						||
| 
								 | 
							
								      systemd.services.<replaceable>foo</replaceable>.serviceConfig.SupplementaryGroups = [ "proc" ];
							 | 
						||
| 
								 | 
							
								    </programlisting>
							 | 
						||
| 
								 | 
							
								  </para>
							 | 
						||
| 
								 | 
							
								
							 | 
						||
| 
								 | 
							
								</chapter>
							 |