From a1b139e5d448b260b3f7849a5b24f45da45241a1 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 20 Aug 2020 14:12:21 +0000
Subject:  Add the notion of essential service

---
 doc/s6-rc-compile.html | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'doc/s6-rc-compile.html')

diff --git a/doc/s6-rc-compile.html b/doc/s6-rc-compile.html
index d931b91..b429e8e 100644
--- a/doc/s6-rc-compile.html
+++ b/doc/s6-rc-compile.html
@@ -143,6 +143,11 @@ is ignored, but trailing whitespace is not. Lines starting with a <tt>#</tt>
 character are ignored. The file defines the <em>direct dependencies</em> of
 <em>service</em>, i.e. the services that must be up in order for
 <em>service</em> to work properly. </li>
+ <li> An optional regular file named <tt>flag-essential</tt>. The contents of this
+file are irrelevant, only its presence is tested. If this file exists, the service
+will be marked as essential, which means that a <tt>s6-rc -d change <em>foo</em></tt>
+command will not stop the service. Only a <tt>s6-rc -D change <em>foo</em></tt>
+command will. </li>
 </ul>
 
 <p>
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