libnih (upstart dependency) ported to kFreeBSD/eglibc

Back in September at the Linux Plumbers Conference in New Orleans, James Hunt and I presented Upstart roadmap, which included porting Upstart to kFreeBSD/glibc. The first milestone is now complete.

Libnih is ported to kFreeBSD/eglibc. During the course to get there the following has happened:

• Petr Salinger (ps-guest) adds waitid() support to eglibc-2.18 packaging branch using wait6 syscall

• Later libnih test-suite gets a test case failure, which is then reported to FreeBSD.org. Turns out some syscalls on FreeBSD returned bogus siginfo_t.si_status information in some cases. Luckily there is now a full test-case and kernel patch posted by Jilles Tjoelker. Once that's committed upstream, I'll push for uploads to the affected kernels in Debian.

• A few small patches applied to libnih, mostly adding POSIX compliant header includes and the like. 

So with a patched libc and patched kernel one can compile libnih & run its test-suite. There are however some caveats feature miss-partiy:

•  nih_watch / inotify support is disabled. This is TODO on my list to port nih_watch to use kevent/kqueue EVFILT_VNODE.

• FreeBSD kernel doesn't have abstract namespace domain sockets, so at the moment I have disabled some abstract namespace test-cases & changed dbus-connection tests to use pathname sockets instead. This is still a TODO because unlink before bind is not done, and the socket is not cleaned up after servers close it at the moment.

With all caveats above, here are the test-suite results:

================================================
   libnih 1.0.4: nih-dbus-tool/test-suite.log
================================================

# TOTAL: 2492
# PASS:  2492
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

===========================================
   libnih 1.0.4: nih-dbus/test-suite.log
===========================================

# TOTAL: 110
# PASS:  110
# SKIP:  0
# XFAIL: 0
# FAIL:  0
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

======================================
   libnih 1.0.4: nih/test-suite.log
======================================

# TOTAL: 788
# PASS:  787
# SKIP:  0
# XFAIL: 1
# FAIL:  0
# XPASS: 0
# ERROR: 0

.. contents:: :depth: 2

PASS: test_watch
================

not ok 1 - nih_watch not supprted yet # TODO
XFAIL: test_watch 1 - nih_watch not supprted yet # TODO

at tests/test_watch.c:1594 (main).
1..1