diff options
| author | Laurent Bercot <ska-skaware@skarnet.org> | 2019-03-02 09:41:24 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2019-03-02 09:41:24 +0000 |
| commit | 23fba266a9454ee6ca095b7f6eccf523f6526607 (patch) | |
| tree | 7350fdaba49b1529a13d50f6396aea35f340954d /doc/s6-linux-init-shutdownd.html | |
| parent | 54d0dc0990f13a86680fa55c623f0570853749ac (diff) | |
| download | s6-linux-init-23fba266a9454ee6ca095b7f6eccf523f6526607.tar.xz | |
Save pending changes in 1.0.0.0 branch
Diffstat (limited to 'doc/s6-linux-init-shutdownd.html')
| -rw-r--r-- | doc/s6-linux-init-shutdownd.html | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/doc/s6-linux-init-shutdownd.html b/doc/s6-linux-init-shutdownd.html new file mode 100644 index 0000000..b6ea412 --- /dev/null +++ b/doc/s6-linux-init-shutdownd.html @@ -0,0 +1,81 @@ +<html> + <head> + <meta name="viewport" content="width=device-width, initial-scale=1.0" /> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <title>s6-linux-init: the s6-linux-init-shutdownd internal program</title> + <meta name="Description" content="s6-linux-init: the s6-linux-init-shutdownd internal program" /> + <meta name="Keywords" content="s6 linux init administration root utilities shutdown halt poweroff reboot daemon shutdownd" /> + <!-- <link rel="stylesheet" type="text/css" href="//skarnet.org/default.css" /> --> + </head> +<body> + +<p> +<a href="index.html">s6-linux-init</a><br /> +<a href="//skarnet.org/software/">Software</a><br /> +<a href="//skarnet.org/">skarnet.org</a> +</p> + +<h1> The <tt>s6-linux-init-shutdownd</tt> internal program </h1> + +<p> +<tt>s6-linux-init-shutdownd</tt> is the daemon that manages the shutdown +procedure for a s6-linux-init installation. It is not meant to be called +directly by the user. +</p> + +<h2> Interface </h2> + +<pre> + s6-linux-init-shutdownd [ -b <em>bindir</em> ] [ -c <em>basedir</em> ] [ -g <em>gracetime</em> ] <em>fifo</em> +</pre> + +<ul> + <li> <tt>s6-linux-init-shutdownd</tt> opens the <em>fifo</em> named pipe +and listens to it. This is where programs such as +<a href="s6-linux-init-shutdown.html">s6-linux-init-shutdown</a> send their +commands when they are told to trigger the shutdown procedure.</li> + <li> When it receives a command to shut down, <tt>s6-linux-init-shutdownd</tt> +first spawns the <em>stage3</em> script defined by the last +<a href="s6-linux-init-maker.html">s6-linux-init-maker</a> invocation. </li> + <li> When this script exits, <tt>s6-linux-init-shutdownd</tt> kills all +processes, first with a SIGTERM, then (after the grace time specified by +the shutdown command) with a SIGKILL. </li> + <li> It then runs the automatically-generated <em>stage 4</em> script, +which unmounts the file systems and halts, powers off or reboots the +machine. </li> +</ul> + +<h2> Exit codes </h2> + +<ul> + <li> 100: wrong usage, or user does not have root privileges. </li> + <li> 111: system call failed. </li> +</ul> + +<h2> Options </h2> + +<ul> + <li> <tt>-b <em>bindir</em></tt> : look for the +<a href="//skarnet.org/software/execline/execlineb.html">execlineb</a> +script interpreter in the <em>bindir</em> directory. Default is <tt>/bin</tt>. </li> + <li> <tt>-c <em>basedir</em></tt> : look for the +<em>stage3</em> and <em>stage4</em> scripts in the <em>basedir</em> +directory. Default is <tt>/etc/s6-linux-init</tt>. </li> + <li> <tt>-g <em>gracetime</em></tt> : if the shutdown command +does not specify a grace time between the SIGTERM and the SIGKILL, use +<em>gracetime</em> milliseconds. Default is 3000. </li> +</ul> + +<h2> Notes </h2> + +<ul> + <li> The <a href="s6-linux-init-shutdownd.html">s6-linux-init-shutdownd</a> +binary is not meant to be called directly by administrators. It is run +by a <a href="//skarnet.org/software/s6/">s6</a> service that is automatically +generated by +<a href="s6-linux-init-maker.html">s6-linux-init-maker</a>. </li> +</ul> + +</body> +</html> |