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<title>skalibs: how to upgrade</title>
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<p>
<a href="index.html">skalibs</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
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<h1> What has changed in skalibs </h1>
<h2> in 2.3.1.3 </h2>
<ul>
<li> Bugfix release, no functional changes. </li>
</ul>
<h2> in 2.3.1.2 </h2>
<ul>
<li> The child_spawn* family of functions now resets all signals
to their default values when spawning a program on systems with
<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/posix_spawn.html">posix_spawn()</a>.
This should not change anything - it's just paranoia. </li>
<li> Minor bugfixes. </li>
</ul>
<h2> in 2.3.1.1 </h2>
<ul>
<li> Bugfix release, no functional changes. </li>
</ul>
<h2> in 2.3.1.0 </h2>
<ul>
<li> wait_status() now returns 256 + signal number when WIFSIGNALED(). </li>
<li> new macro wait_estatus() to get WIFSIGNALED information in an exit code. </li>
<li> new functions in djbunix.h: hiercopy(), hiercopy_tmp() </li>
</ul>
<h2> in 2.3.0.1 </h2>
<ul>
<li> wait_status() now returns 256 (instead of 126) when WIFSIGNALED(). </li>
</ul>
<h2> in 2.3.0.0 </h2>
<ul>
<li> buffer_getvall and buffer_putvall have a different interface. (And now work.) </li>
<li> buffer_read and buffer_write are now deprecated. </li>
<li> various siovec additions, such as siovec_trunc </li>
</ul>
<h2> in 2.2.1.0 </h2>
<ul>
<li> unixconnection added. </li>
<li> sig_name and sig_number added. </li>
</ul>
<h2> in 2.2.0.0 </h2>
<ul>
<li> TAI64 and TAI64N conversion functions revisited.
API slightly changed, made more consistent. </li>
</ul>
<h2> in 2.1.0.0 </h2>
<ul>
<li> unixmessage_drop added, part of unixmessage/skaclient hardening against fd leakage </li>
<li> unixmessage_sender_flush return code aligned with the convention in the rest of skalibs </li>
<li> unixmessage_sender_flush now handles short writes </li>
<li> skaclient_start(_async) prototype changed: now takes an option argument </li>
</ul>
<h2> in 2.0.0.0 </h2>
<ul>
<li> The packaging system has completely changed. </li>
<li> Programs should now link with <tt>-lskarnet</tt> followed by the appropriate
sysdeps links. </li>
<li> No compatibility is ensured. Most APIs haven't changed, but no guarantee
is offered. </li>
<li> The most important change is probably the disparition of <tt>struct tai</tt>
and <tt>struct taia</tt>, replaced with the <tt>tai_t</tt> and <tt>tain_t</tt>
types. Attosecond precision has been removed - processor speed is almost capped now,
and it looks like nanosecond precision will be enough for the foreseeable future. </li>
<li> Buffer implementation has changed, and some interfaces too, mainly the
buffer_flush and bufalloc_flush return code. </li>
<li> skaclient, skalibs' client-server communication suite, has been
entirely reimplemented: it's now using the new "unixmessage" set of primitives
for easier fd-passing. </li>
</ul>
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