uClibc on noMMU doesn't provide __register_atfork().
Reported by redbirdtek on Github issue.
https://github.com/libressl-portable/portable/issues/538
ok bcook@

ok deraadt@

and net config can change as well. So if a peer does not respond,
throw it out of the pool if it's a pool member and re-resolve to
find a replacement. Hold on to good peers so we end up with a good
set of peers. ok benno@

ok guenther jmc

requiring it (sftp-server).
Remove the /exists///// behaviour from here.  The /nonexistant
behaviour remains in the kernel and needs to be shot next.
There may be ports fallout, but we doubt it.
ok beck djm

- Cloudflare have very good adjacency (if PCH did anycast ntp, we'd use it)
- As ntp input, it is great they don't leapsmear
- Not all their nodes do ntp, hope they succeed at scaling that up
- ntpd constrains (un-auth) ntp packets within a TLS constraint window
so there is no downside (unlike pool.ntp entries which slowly decay
but that's a story for another commit..)
ok otto

have a different calling convention than the standard function...as seen
in kdump output.
ok deraadt@ schwarze@

on error, so tweak previous to test "atexit(...) != 0" for portability.
"OK ok ok sorry backwards" deraadt@

value < 0.  errno is only updated in this case.  Change all (most?)
callers of syscalls to follow this better, and let's see if this strictness
helps us in the future.

prototype information (in this case, the miniroot-building code is
completely lovecraft)

on error, so checking for -1 only is potentially non-portable.
Also mention that the C89 standard does not require errno to be set.
OK deraadt@ millert@

the log destination changes. ok claudio@ benno@

an (auto) settime or give up. 15s timeout is still in effect. ok florian@

such a circumstance ever occurs.
ok job

code.  We now user the simple userland wrapper on top of __realpath(2).
The non-POSIX behaviour still remains, that is the next component to fix.
From a diff by beck, but I managed to chainsaw it a bit further.  Tested
in snaps for a couple of days.
ok beck

engine does not know if we're in startup mode, so use a small interval
the first few times there.

it is a thin wrapper over the syscall __readlink(2).  Improve the list
of possible errors.
ok millert beck jmc

ok benno@

for anything other than a regular old mouse, X needs to be able to
directly talk to the device and newer machines can have all kinds of
touchscreens, pen devices, touchpads, etc.
ok deraadt

(booting, constraint(s) defined) set the time but only if the clock
should be moved forward by more than a minute, based on ntp replies
that satisfied the constraints. Tested by many; ok deraadt@

on 32bit platforms which cause incorrect results when adding a block
>=512M in size.  sha1 patch from ante84 at gmail.com via openssh github,
sha2 with djm@, ok tedu@

_csu_finish() to _libc_preinit(), which is an .init_array function
in shared libc (and mark it INITFIRST) or a .preinit_array function
in static libc, grabbing the _dl_cb callback there from ld.so.  Then
in _csu_finish(), invoke the dl_clean_boot() callback to free ld.so's
startup bits before main() gets control.
Other cleanups this permits:
- move various startup structures into .data.rel.ro
- the dl* stubs in libc can be strong and call the callbacks provided
via _dl_cb
- no longer need to conditionalize dlctl() calls on presence of _DYNAMIC
original concept and full diff ok kettenis@
ok deraadt@

Problem noticed by bluhm@. Discussed on hackers.
ok claudio@

an absolute value and fix poll loop to first generate messages and
then compute poll flags the write cases. This makes the timeout
workaround for constraints unneeded.  ok reyk@ tb@

checks userland-parsing vs kernel parsing, we are hoping to spot another
bug..

with once the clock is synced. ok deraadt@ florian@

calling it until those are fixed.

For now, this also still uses the existing realpath implmentation
and emits a syslog if we see differening results. Once we have run
with that for a little while we will remove the old code
ok deraadt@

Will get us rid of pointless patches in the ports tree.  ok guenther@

If the time is wrong, we cannot validate dnssec, leading to failed
DNS lookups, so we cannot adjust or set the time.  Work around this
by repeating a failed DNS lookup with a lookup with the DC (check
disabled) bit set. ok florian@

Fixes malloc_conceal...freezero with malloc options C and/or G.

ok jmc@, schwarze@

triggered by a question from Jan Stary <hans at stare dot cz> on misc@;
OK otto@

and remove the lie that these functions would set errno;
tweaks and OK jmc@; OK rob@ on the previous version