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<p>
<a href="index.html">skalibs</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h2> in 2.14.0.0 </h2>
<ul>
<li> New selfpipe accessor function: <tt>selfpipe_fd()</tt> </li>
<li> New djbunix functions: <tt>slurpn()</tt>, <tt>openslurpnclose()</tt> </li>
<li> <tt>slurp</tt> and <tt>openslurpclose</tt> are now macros </tt> </li>
<li> New cdb functions: <tt>cdb_hashv()</tt>, <tt>cdbmake_addv()</tt> </li>
<li> New <tt>cspawn</tt> function, for posix_spawn/fork unification </li>
<li> <tt>child_spawn</tt> functions are now declared in <tt>cspawn.h</tt> </li>
</ul>
<h2> in 2.13.1.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.13.1.0 </h2>
<ul>
<li> New macro: <tt>SKALIBS_PATH_MAX</tt> </li>
</ul>
<h2> in 2.13.0.0 </h2>
<ul>
<li> New functions: <tt>buffer_timed_put()</tt>, <tt>buffer_timed_puts()</tt>. </li>
</ul>
<h2> in 2.12.0.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.12.0.0 </h2>
<ul>
<li> <tt>random_init()</tt> and <tt>random_finish()</tt> removed,
as well as <tt>random_char()</tt>. </li>
<li> <tt>random_string()</tt> renamed to <tt>random_buf()</tt>. </li>
<li> random functions now have an <tt>early</tt> version, to use when
randomness is required before the generator can be seeded (i.e. in
programs running in the very early boot). </li>
<li> New <a href="libstddjb/djbunix.html">djbunix</a> functions:
<tt>waitn_posix()</tt>, <tt>waitn_reap_posix()</tt> </li>
</ul>
<h2> in 2.11.2.0 </h2>
<ul>
<li> User-provided CPPFLAGS, CFLAGS and LDFLAGS are now honored during
sysdeps autodetection. </li>
<li> <tt>envdir_internal()</tt> now has a SKALIBS_ENVDIR_NOCLAMP option
allowing reading of unlimited-size variables. </li>
</ul>
<h2> in 2.11.1.0 </h2>
<ul>
<li> <tt>fd_close()</tt> now chooses to adapt to Linux's
<a href="https://man7.org/linux/man-pages/man2/close.2.html">close()</a>
behaviour (closing the fd on EINTR) over the HP-UX one (not closing it).
Destructors like
<a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/close.html">close()</a>
being allowed to fail has always been a mistake in the specification and a
programming nightmare, making it impossible to behave correctly on all
systems, but apparently standardization efforts are on the way and the Linux
behaviour seems to be the chosen one. </li>
<li> New <tt>unix-transactional.h</tt> function: <tt>opendir_at</tt>. </li>
</ul>
<h2> in 2.11.0.0 </h2>
<ul>
<li> <tt>libbiguint</tt> removed. </li>
<li> Obsolete <tt>skalibs/environ.h</tt> and <tt>skalibs/getpeereid.h</tt> headers removed. </li>
<li> rc4 and md5 functions removed. </li>
<li> iobuffer removed. <tt>fd_cat()</tt> and <tt>fd_catn()</tt> changed signatures. </li>
<li> All <tt>*_t</tt> types renamed without the <tt>_t</tt> suffix,
in order to preserve POSIX namespace. </li>
<li> <tt>subgetopt()</tt> renamed to <tt>lgetopt()</tt>. </li>
<li> All signal functions entirely reworked; cruft removed. </li>
<li> <tt>skalibs/cdb_make.h</tt> renamed to <tt>skalibs/cdbmake.h</tt>;
<tt>cdbmake</tt> functions now return 1 on success and 0 on failure. </li>
<li> <tt>skalibs/cdb.h</tt> redesigned to remove reader state from the
cdb structure itself. </li>
<li> The unsafe <tt>cdb_successor()</tt> API has been removed.
<li> New <tt>skalibs/posixplz.h</tt> function: munmap_void()</tt>. </li>
</ul>
<h2> in 2.10.0.3 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.10.0.2 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.10.0.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.10.0.0 </h2>
<ul>
<li> New <tt>openc_*</tt> functions, which are O_CLOEXEC versions of the
<a href="libstddjb/djbunix.html">djbunix.h</a> <tt>open_*</tt> functions. </li>
<li> New <tt>ipc_bind_reuse_lock()</tt> function, which takes a lock before
deleting a Unix domain socket. The <tt>ipc_bind_reuse()</tt> function now
uses it, so it won't unconditionally clobber sockets in the filesystem anymore. </li>
<li> Complete revamping of the pathexec functions, see <tt>exec.h</tt>. </li>
<li> Revamping of the locking functions, see
<a href="libstddjb/djbunix.html>djbunix.h</a>. </li>
<li> Use of standard O_NONBLOCK and O_CLOEXEC (defined in
<a href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/fcntl.h.html"></a>
instead of adhoc <tt>DJBUNIX_FLAG_NB</tt> and <tt>DJBUNIX_FLAG_COE</tt>. </li>
<li>Better header separation; <tt>webipc.h</tt> removed (stuff moved to
<tt>socket.h</tt>). </li>
<li> New <tt>mkptemp2()</tt> function, creating a fifo with a templated name
and an option field for O_NONBLOCK and O_CLOEXEC. </li>
<li> New sysdep: <tt>chroot</tt>, testing whether the system has the
<tt>chroot()</tt> function. </li>
</ul>
<h2> in 2.9.3.0 </h2>
<ul>
<li> New function: <tt>stralloc_readyplus_tuned()</tt> </li>
</ul>
<h2> in 2.9.2.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.9.2.0 </h2>
<ul>
<li> New functions: <tt>bigkv_*</tt> </li>
</ul>
<h2> in 2.9.1.0 </h2>
<ul>
<li> skalibs now works on GNU Hurd without patches. </li>
<li> New function: <tt>path_canonicalize</tt> </li>
</ul>
<h2> in 2.9.0.0 </h2>
<ul>
<li> Formatting and scanning functions and macros have been refactored. </li>
<li> The configure script now emulates autotools-created configure scripts
more closely. In particular, it's now possible to declare an out-of-path
compiler in <tt>CC</tt>. </li>
<li> <tt>tain_*</tt> functions dealing with wall clocks and stopwatches
have been refactored. The <tt>--enable-clock</tt> and <tt>--enable-monotonic</tt>
configure switches have been removed. <tt>tain_now()</tt> can now be told at run
time to use a wall clock (default, or via <tt>tain_now_set_wallclock()</tt>) or a
stopwatch (via <tt>tain_now_set_stopwatch()</tt>), instead of it being fixed at
build time. </li>
<li> Cross-compilation has been made a lot easier, by removing the need to
provide a whole sysdeps directory anymore. Only a few sysdeps - the ones that
need code execution on the target to be autodetected - have to be provided manually,
via a <tt>--with-sysdep-<em>K</em>=<em>V</em></tt> option to configure.
Currently, that means one: <tt>--with-sysdep-devurandom=yes</tt> or
<tt>--with-sysdep-devurandom=no</tt>. </li>
</ul>
<h2> in 2.8.1.0 </h2>
<ul>
<li> New functions:
<ul>
<li> <tt>skalibs_regcomp()</tt>, which accepts empty regexes even
when <a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/regcomp.html">regcomp()</a>
does not (e.g. the BSDs). </li>
</ul> </li>
</ul>
<h2> in 2.8.0.1 </h2>
<ul>
<li> Changes to <a href="djbtime.html">skalibs/djbtime.h</a> functions
that produce UTC time: when a leap second is hit, <tt>utc_from_tai()</tt>
now returns 2, and functions writing a <tt>struct tm</tt> put 60 into
the struct's <tt>tm_sec</tt> field.</li>
</ul>
<h2> in 2.8.0.0 </h2>
<ul>
<li> The avltreeb macros have been removed. Instead, the
<tt>AVLTREEN_DECLARE_AND_INIT()</tt> macro has been added. </li>
<li> The <tt>mkdir_unique()</tt> function has been removed.
(It duplicated the functionality of the standard <tt>mkdtemp()</tt>
function.) </li>
<li> New functions: <tt>env_dump()</tt>, <tt>mk?temp()</tt>,
<tt>autosurf()</tt>, <tt>autosurf_name()</tt> </li>
<li> The ancilautoclose and nbwaitall sysdeps have been removed. </li>
<li> New header: <tt>skalibs/posixishard.h</tt> </li>
<li> <tt>libskarnet.a</tt> now builds as PIC by default no matter
the toolchain's settings. Use the <tt>--disable-all-pic</tt> configure
option to build static libraries as non-PIC. </li>
</ul>
<h2> in 2.7.0.0 </h2>
<ul>
<li> New functions: <tt>ipc_timed_sendv()</tt>, <tt>unlink_void()</tt>,
<tt>skagetln_loose()</tt>, <tt>skagetlnsep_loose()</tt>,
<tt>genset_deepfree()</tt>, <tt>gensetdyn_deepfree()</tt> </li>
<li> The <a href="libstddjb/djbunix.html">dir_close()</a> function now returns void
and leaves errno unchanged. </li>
<li> The <tt>absolutepath()</tt> and <tt>sarealpath_tmp()</tt> functions, as well
as the <tt>avl*_deletenode()</tt>, <tt>skalibs/mininetstring.h</tt> and <em>prot</em>
families of functions, have been removed. </li>
<li> <a href="libstddjb/djbunix.html">skalibs/djbunix.h</a> does not include
<tt>skalibs/env.h</tt> anymore. </li>
</ul>
<h2> in 2.6.4.0 </h2>
<ul>
<li> New functions: <a href="libstddjb/djbunix.html">execvep_loose()</a>,
<tt>byte_zzero()</tt>, <a href="libstddjb/djbunix.html">openb_read()</a>,
<tt>sig0_scan</tt> </li>
<li> New family of functions: <a href="libdatastruct/genqdyn.html">skalibs/genqdyn.h</a> </li>
</ul>
<h2> in 2.6.3.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.6.3.0 </h2>
<ul>
<li> New dir_fd function wrapping dirfd() (Solaris doesn't have dirfd()). </li>
<li> memmem implementation for platforms that don't provide it. </li>
<li> memmem wrappers: byte_search, siovec_search. </li>
<li> New functions: atomic_symlink, skagetlnmaxsep, child_spawn3 </li>
<li> New header: <tt>skalibs/posixplz.h</tt>. Some header reorganization. </li>
<li> New family of functions: <tt>skalibs/textmessage.h</tt>, <tt>skalibs/textclient.h</tt> </li>
<li> <tt>skalibs/environ.h</tt> and <tt>skalibs/getpeereid.h</tt> are now obsolescent. </li>
</ul>
<h2> in 2.6.2.0 </h2>
<ul>
<li> New functions: access_at(), skaclient_timed_aflush(). </li>
</ul>
<h2> in 2.6.1.0 </h2>
<ul>
<li> New function: <a href="libstddjb/djbunix.html">lock_unx()</a>. </li>
</ul>
<h2> in 2.6.0.2 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.6.0.1 </h2>
<ul>
<li> <tt>openwritenclose()</tt> and <tt>openwritevnclose()</tt> now use
<a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/mkstemp.html">mkstemp()</a>
instead of relying on an unpredictable name (which required a random
generator to be fully initialized). </li>
</ul>
<h2> in 2.6.0.0 </h2>
<ul>
<li> New functions: <tt>unixmessage_receiver_hasmsginbuf()</tt>,
<tt>skalibs_setgroups()</tt>, <tt>setgroups_with_egid()</tt>,
<tt>setgroups_and_gid()</tt>. The <tt>setgroups_and_gid()</tt>
function is the one that should be used, if possible: it does the
right thing even on the BSDs. (That's an achievement.) </li>
</ul>
<h2> in 2.5.1.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.5.1.0 </h2>
<ul>
<li> The <tt>xpathexec_*</tt> family of functions has been added to
<a href="libstddjb/djbunix.html">skalibs/djbunix.h</a>. </li>
</ul>
<h1> What has changed in skalibs </h1>
<h2> in 2.5.0.0 </h2>
<ul>
<li> Support for old versions of OpenBSD dropped. At least OpenBSD 5.7
and newer are still supported. </li>
<li> <tt>--enable-replace-libc</tt> compilation flag dropped </li>
<li> <tt>skalibs/ushort.h</tt>, <tt>skalibs/uint.h</tt> and <tt>skalibs/ulong.h</tt>
removed. <tt>skalibs/types.h</tt> is now a generic header for fmtscan primitives
for various types. </li>
<li> <tt>uint16</tt>, <tt>uint32</tt> and <tt>uint64</tt> types replaced with POSIX
<tt>uint16_t</tt>, <tt>uint32_t</tt> and <tt>uint64_t</tt>. </li>
<li> APIs changed across all skalibs functions to support more POSIXly correct
types. Main benefit: correct 64-bit support on 64-bit archs with 32-bit int. </li>
</ul>
<h2> in 2.4.0.2 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.4.0.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.4.0.0 </h2>
<ul>
<li> More support for advanced fd callbacks in <tt>unixmessage_sender</tt> and <tt>unixconnection</tt>. </li>
<li> <tt>ipc_timed_send()</tt>, <tt>ipc_timed_recv()</tt> </li>
<li> rt.lib sysdep removed; spawn.lib and timer.lib sysdeps added </li>
<li> Leap second for 2016-12-31 23:59:60 UTC added </li>
<li> Complete <a href="librandom/">librandom</a> rewrite </li>
<li> <a href="libstddjb/alarm.html">skalibs/alarm.h</a> added </li>
</ul>
<h2> in 2.3.10.0 </h2>
<ul>
<li> Support for advanced fd callbacks in <tt>unixmessage_sender</tt>. </li>
</ul>
<h2> in 2.3.9.0 </h2>
<ul>
<li> New functions: <tt>bitarray_firstclear_skip</tt> and
<tt>bitarray_firstset_skip</tt>. </li>
</ul>
<h2> in 2.3.8.3 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.8.2 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.8.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.8.0 </h2>
<ul>
<li> The <tt>/etc/leapsecs.dat</tt> file is no longer necessary. </li>
</ul>
<h2> in 2.3.7.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.7.0 </h2>
<ul>
<li> New functions: <tt>atomic_rm_rf()</tt>, <tt>atomic_rm_rf_tmp()</tt>. </li>
</ul>
<h2> in 2.3.6.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.6.0 </h2>
<ul>
<li> New function: <tt>openreadnclose_nb</tt>. </li>
</ul>
<h2> in 2.3.5.2 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.5.1 </h2>
<ul>
<li> No functional changes. </li>
</ul>
<h2> in 2.3.5.0 </h2>
<ul>
<li> New functions: <tt>bitarray_count()</tt>, <tt>openwritevnclose_at()</tt> </li>
</ul>
<h2> in 2.3.4.0 </h2>
<ul>
<li> New function: <tt>stat_at()</tt> </li>
<li> The rest of the changes are bugfixes or QoL. </li>
</ul>
<h2> in 2.3.3.0 </h2>
<ul>
<li> New sha512 functions, see <tt>skalibs/sha512.h</tt> </li>
</ul>
<h2> in 2.3.2.0 </h2>
<ul>
<li> New macro: <tt>gid0_scan()</tt> </li>
</ul>
<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="https://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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