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<html>
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    <title>How to upgrade s6</title>
    <meta name="Description" content="How to upgrade s6" />
    <meta name="Keywords" content="s6 installation upgrade" />
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<body>

<p>
<a href="index.html">s6</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>

<h1> What has changed in s6 </h1>

<h2> in 2.7.2.2 </h2>
<ul>
 <li> No functional changes. </li>
</ul>

<h2> in 2.7.2.1 </h2>
<ul>
 <li> No functional changes. </li>
</ul>

<h2> in 2.7.2.0 </h2>

<ul>
 <li> Optional <a href="//skarnet.org/software/nsss/">nsss</a> support added. </li>
 <li> <a href="//skarnet.org/software/skalibs/"></a>skalibs</a>
dependency bumped to 2.7.0.0. </li>
 <li> <a href="//skarnet.org/software/execline/">execline</a>
dependency bumped to 2.5.0.1. </li>
 <li> <tt>-B</tt> option added to
<a href="s6-ipcserver-socketbinder.html">s6-ipcserver-socketbinder</a>. </li>
 <li> <tt>-d&nbsp;<em>notif</em></tt> option added to
<a href="s6-svscan.html">s6-svscan</a>. </li>
 <li> New optional <tt>./down-signal</tt> file in a
<a href="servicedir.html">service directory</a>, to tell
<a href="s6-supervise.html">s6-supervise</a> to use another signal than
SIGTERM when bringing the service down. </li>
 <li> New <tt>-r</tt> option added to <a href="s6-svc.html">s6-svc</a>, to
restart the service via the signal defined in <tt>./down-signal</tt>. </li>
</ul>

<h2> in 2.7.1.1 </h2>

<ul>
 <li> No functional changes. </li>
</ul>

<h2> in 2.7.1.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.6.4.0. </li>
 <li> New commands: <a href="s6-svdt.html">s6-svdt</a>,
<a href="s6-svdt-clear.html">s6-svdt-clear</a>,
<a href="s6-permafailon.html">s6-permafailon</a> </li>
 <li> <a href="s6-tai64nlocal.html">s6-tai64nlocal</a> can now
print GMT times with the <tt>-g</tt> option. </li>
</ul>

<h2> in 2.7.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.6.3.0. </li>
 <li> <a href="libs6/s6lockd.html">s6lockd</a> and
<a href="libs6/s6-ftrigrd.html">s6-ftrigrd</a> now use the new
<tt>textclient</tt> API and ABI from skalibs, instead of the
more generic <tt>skaclient</tt>. This is cleaner, faster code.
(<a href="s6-fdholderd.html">s6-fdholderd</a> still uses
skaclient, since its point is to transmit file descriptors,
which textclient does not support.) </li>
</ul>

<h2> in 2.6.2.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.6.2.0. </li>
 <li> execline dependency bumped to 2.3.0.4. </li>
 <li> New <a href="libs6/s6-fdholder.html">s6_fdholder</a> functions:
s6_fdholder_start(), s6_fdholder_end(). </li>
</ul>

<h2> in 2.6.1.1 </h2>

<ul>
 <li> skalibs dependency bumped to 2.6.0.1. </li>
 <li> execline dependency bumped to 2.3.0.3. </li>
</ul>

<h2> in 2.6.1.0 </h2>

<ul>
 <li> Additions of a few interfaces to libs6
in order to fix a race condition in s6-rc. </li>
 <li> New program: <a href="s6-notifyoncheck.html">s6-notifyoncheck</a>. </li>
</ul>

<h2> in 2.6.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.5.1.1. </li>
</ul>

<h2> in 2.5.1.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.5.1.0. </li>
 <li> execline dependency bumped to 2.3.0.1. </li>
 <li> <a href="s6-ftrig-listen1.html">s6-ftrig-listen1</a> prints the last event
it received to stdout. </li>
 <li> The <tt>timeout-kill</tt> file is now recognized in a
<a href="servicedir.html">service directory</a> and allows
<a href="s6-svc.html">s6-svc -d</a> to send a SIGKILL after a timeout if the
process is still not dead after the initial SIGTERM and SIGCONT. </li>
</ul>

<h2> in 2.5.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.5.0.0. </li>
 <li> execline dependency bumped to 2.3.0.0. </li>
 <li> Services can now report permanent failure by having <tt>./finish</tt>
exit 125. </li>
 <li> <a href="s6-svwait.html">s6-svwait</a>,
      <a href="s6-svlisten.html">s6-svlisten</a> and
      <a href="s6-svlisten1.html">s6-svlisten1</a> now exit 99
when they time out. They exit <em>n</em> when there are <em>n</em>
services reporting permanent failure. </li>
</ul>

<h2> in 2.4.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.4.0.0. </li>
 <li> execline dependency bumped to 2.2.0.0. </li>
 <li> <a href="s6-ipcserver-socketbinder.html">s6-ipcserver-socketbinder</a>
can now create datagram sockets. </li>
</ul>

<h2> in 2.3.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.10.0. </li>
 <li> execline dependency bumped to 2.2.5.0. </li>
 <li> <a href="s6-svscan.html">s6-svscan</a> now defaults to <tt>-t0</tt>
instead of <tt>-t5000</tt>. </li>
</ul>

<h2> in 2.2.4.3 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.9.0. </li>
</ul>

<h2> in 2.2.4.2 </h2>

<ul>
 <li> No functional changes </li>
</ul>

<h2> in 2.2.4.1 </h2>

<ul>
 <li> <a href="s6-envuidgid.html">s6-envuidgid</a> behaviour fixed to be
compatible with 2.2.3.1 and previous releases. </li>
</ul>

<h2> in 2.2.4.0 </h2>

<ul>
 <li> Additional options to
<a href="s6-envuidgid.html">s6-envuidgid</a> for more flexibility </li>
 <li> skalibs dependency bumped to 2.3.8.3. </li>
 <li> execline dependency bumped to 2.1.4.5. </li>
</ul>

<h2> in 2.2.3.1 </h2>

<ul>
 <li> No functional changes </li>
</ul>

<h2> in 2.2.3.0 </h2>

<ul>
 <li> Processor scripts for <a href="s6-log.html">s6-log</a>
now switch their working directory to the logdir they process. </li>
 <li> skalibs dependency bumped to 2.3.8.2. </li>
 <li> execline dependency bumped to 2.1.4.4. </li>
</ul>

<h2> in 2.2.2.2 </h2>

<ul>
 <li> No functional changes </li>
</ul>

<h2> in 2.2.2.1 </h2>

<ul>
 <li> No functional changes </li>
</ul>

<h2> in 2.2.2.0 </h2>

<ul>
 <li> <a href="s6-svscan.html">s6-svscan</a> now supports the <tt>-s</tt>
option for configurable signal management. </li>
 <li> GNU make dependency pushed back to 3.81. </li>
 <li> skalibs dependency bumped to 2.3.8.0. </li>
 <li> execline dependency bumped to 2.1.4.2. </li>
</ul>

<h2> in 2.2.1.1 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.7.1. </li>
 <li> execline dependency bumped to 2.1.4.1. </li>
</ul>

<h2> in 2.2.1.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.7.0. </li>
 <li> execline dependency bumped to 2.1.4.0. </li>
 <li> <a href="s6-svc.html">s6-svc</a>,
<a href="s6-svlisten1.html">s6-svlisten1</a> and
<a href="s6-svlisten.html">s6-svlisten</a> support new
<tt>-wr</tt> and <tt>-wR</tt> options. </li>
</ul>

<h2> in 2.2.0.1 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.6.1. </li>
 <li> execline dependency bumped to 2.1.3.1. </li>
</ul>

<h2> in 2.2.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.6.0. </li>
 <li> execline dependency bumped to 2.1.3.0. </li>
 <li> The internals of <a href="s6-supervise.html">s6-supervise</a> have
changed; the <tt>supervise/status</tt> file ABI has changed and is not
compatible with the daemontools/runit <tt>supervise/status</tt> files
anymore. (This should not impact anything.) </li>
 <li> <a href="s6-supervise.html">s6-supervise</a> features a
configurable timeout for <tt>./finish</tt> scripts, via the
<a href="servicedir.html"><tt>./timeout-finish</tt></a> file. </li>
 <li> <a href="s6-svwait.html">s6-svwait</a>,
<a href="s6-svlisten1.html">s6-svlisten1</a> and
<a href="s6-svlisten.html">s6-svlisten</a> can now wait for a <tt>'D'</tt>
event, which means the <tt>./finish</tt> script has terminated. </li>
 <li> The deprecated <tt>s6-notifywhenup</tt> program has been
removed. </li>
 <li> The syntax for synchronous <a href="s6-svc.html">s6-svc</a>
waiting has changed. </li>
</ul>

<h2> in 2.1.6.0 </h2>

<ul>
 <li> <a href="s6-svc.html">s6-svc</a> now checks for the existence
of <tt>notification-fd</tt> before accepting a <tt>U</tt> command. </li>
 <li> New <tt>-X</tt> option to <a href="s6-svc.html">s6-svc</a>. </li>
 <li> Different meaning of SIGQUIT for
<a href="s6-supervise.html">s6-supervise</a>: now the same as
<tt>s6-svc -X</tt>. </li>
</ul>

<h2> in 2.1.5.0 </h2>

<ul>
 <li> <a href="s6-log.html">s6-log</a> now exits cleanly on SIGHUP. </li>
</ul>

<h2> in 2.1.4.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.5.1. </li>
 <li> execline dependency bumped to 2.1.2.2. </li>
 <li> The <a href="s6-notifywhenup.html">s6-notifywhenup</a> command
has been deprecated. Race-free
<a href="notifywhenup.html">readiness notification</a> can now be implemented
via the <tt>notification-fd</tt> file in a
<a href="servicedir.html">service directory</a>. </li>
</ul>

<h2> in 2.1.3.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.2.0. </li>
 <li> execline dependency bumped to 2.1.1.0. </li>
 <li> New options to <a href="s6-envuidgid.html">s6-envuidgid</a>. </li>
</ul>

<h2> in 2.1.2.0 </h2>

<ul>
 <li> New options to <a href="s6-setsid.html">s6-setsid</a>. </li>
</ul>

<h2> in 2.1.1.2 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.1.0. </li>
 <li> execline dependency bumped to 2.1.0.0. </li>
 <li> Apart from that, this is a bugfix release. (The bump in
dependencies is part of the bugfix.) </li>
</ul>

<h2> in 2.1.1.1 </h2>

<p>
 Bugfix release, no important changes.
</p>

<h2> in 2.1.1.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.3.0.0. </li>
 <li> execline dependency bumped to 2.0.2.1. </li>
 <li> New functionality added to <a href="s6-log.html">s6-log</a>. Its
syntax has been extended; some options are now marked as obsolescent. </li>
 <li> Access control instated in <a href="s6-fdholderd.html">s6-fdholderd</a>
for <a href="s6-fdholder-listc.html">listing</a> </li>
</ul>

<h2> in 2.1.0.1 </h2>

<p>
 Bugfix release, no important changes.
</p>

<h2> in 2.1.0.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.2.1.0. </li>
 <li> execline dependency bumped to 2.0.2.0. </li>
 <li> Unix domain socket utilities moved from the
<a href="//skarnet.org/software/s6-networking/">s6-networking</a>
package to s6. </li>
 <li> <tt>./finish</tt> argument for "service crashed" is now 256
instead of 255. <strong>Check your finish scripts!</strong> </li>
 <li> <tt>supervise/status</tt> now includes wstat information
when the service died, and s6-svstat reports that information. </li>
 <li> s6-svstat now reports symbolic signal information by default,
use <tt>-n</tt> to get the old behaviour. </li>
 <li> s6-log now properly calls execlineb with its installation
prefix, in the slashpackage case. </li>
 <li> New commands: s6-svlisten and s6-svlisten1, to signal a
service and wait on it without race condition. </li>
 <li> A brand new set of programs, <tt>s6-fdholder*</tt>, to perform
fd-holding. </li>
 <li> Catchy blurb on intro page. </li>
</ul>

<h2> in 2.0.1.0 </h2>

<ul>
 <li> skalibs dependency bumped to 2.2.0.0. </li>
 <li> execline dependency bumped to 2.0.1.1. </li>
 <li> Better readiness notification management via s6-svwait -U. </li>
</ul>

<h2> in 2.0.0.1 </h2>

<ul>
 <li> skalibs dependency bumped to 2.1.0.0. </li>
</ul>

<h2> in 2.0.0.0 </h2>

<ul>
 <li> The build system has completely changed. It is now a standard
<tt>./configure &amp;&amp; make &amp;&amp; sudo make install</tt>
build system. See the enclosed INSTALL file for details. </li>
 <li> slashpackage is not activated by default. </li>
 <li> shared libraries are not used by default. </li>
 <li> skalibs dependency bumped to 2.0.0.0. </li>
 <li> execline dependency bumped to 2.0.0.0. </li>
 <li> <a href="s6-supervise.html">s6-supervise</a> does not create
the <tt>./event</tt> fifodir as public. Subscriptions are restricted
to users having the same gid as the s6-supervise process. </li>
 <li> The <a href="s6-notifywhenup.html">s6-notifywhenup</a> program
is a new addition. </li>
</ul>

</body>
</html>