Date: Mon, 15 Jun 2009 16:59:27 -0400 From: John Baldwin <jhb@freebsd.org> To: stable@FreeBSD.org Subject: HEADSUP: libpthread compat for 5.x and 6.x binaries Message-ID: <200906151659.27326.jhb@freebsd.org>
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One of the changes in FreeBSD 8.0 is the removal of support for the KSE threading library and its associated system calls. What this means in practice is that if one uses a KSE-based libpthread from 5.x or 6.x in a chroot or jail on an 8.0 system, the binaries will fail with SIGSYS. For most (possibly all) binaries, this can be worked around by using libthr instead libpthread. FreeBSD 7.0 and later ship with libthr as the threading library installed as libpthread. What I would like to find out is if there are any 5.x or 6.x binaries that use libpthread that do not run well with libthr. You can test this by using a libmap.conf(5) file to remap libpthread to libthr. For 5.x binaries you will want to remap libpthread.so.1 to libthr.so.1. For 6.x binaries you will want to remap libpthread.so.2 to libthr.so.2. This can be accomplished using an /etc/libmap.conf file that contains: <quote file="/etc/libmap.conf"> # Remap 5.x and 6.x libpthread to libthr libpthread.so.1 libthr.so.1 libpthread.so.2 libthr.so.2 </quote> To my knowledge, most binaries should work fine in this configuration. One binary that I am aware of that does have problems is the 'arcconf' binary from ports. However, for this particular case there is a binary for 7.x available for use on 8.0 systems. -- John Baldwin
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