# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-libs/glibc/files/eblits/pkg_preinst.eblit,v 1.3 2010/10/08 15:33:13 flameeyes Exp $

fix_lib64_symlinks() {
	# the original Gentoo/AMD64 devs decided that since 64bit is the native
	# bitdepth for AMD64, lib should be used for 64bit libraries. however,
	# this ignores the FHS and breaks multilib horribly... especially
	# since it wont even work without a lib64 symlink anyways. *rolls eyes*
	# see bug 59710 for more information.
	# Travis Tilley <lv@gentoo.org> (08 Aug 2004)
	if [ -L ${ROOT}/lib64 ] ; then
		ewarn "removing /lib64 symlink and moving lib to lib64..."
		ewarn "dont hit ctrl-c until this is done"
		rm ${ROOT}/lib64
		# now that lib64 is gone, nothing will run without calling ld.so
		# directly. luckily the window of brokenness is almost non-existant
		use amd64 && /lib/ld-linux-x86-64.so.2 /bin/mv ${ROOT}/lib ${ROOT}/lib64
		use ppc64 && /lib/ld64.so.1 /bin/mv ${ROOT}/lib ${ROOT}/lib64
		# all better :)
		ldconfig
		ln -s lib64 ${ROOT}/lib
		einfo "done! :-)"
		einfo "fixed broken lib64/lib symlink in ${ROOT}"
	fi
	if [ -L ${ROOT}/usr/lib64 ] ; then
		rm ${ROOT}/usr/lib64
		mv ${ROOT}/usr/lib ${ROOT}/usr/lib64
		ln -s lib64 ${ROOT}/usr/lib
		einfo "fixed broken lib64/lib symlink in ${ROOT}/usr"
	fi
	if [ -L ${ROOT}/usr/X11R6/lib64 ] ; then
		rm ${ROOT}/usr/X11R6/lib64
		mv ${ROOT}/usr/X11R6/lib ${ROOT}/usr/X11R6/lib64
		ln -s lib64 ${ROOT}/usr/X11R6/lib
		einfo "fixed broken lib64/lib symlink in ${ROOT}/usr/X11R6"
	fi
}

eblit-glibc-pkg_preinst() {
	# nothing to do if just installing headers
	just_headers && return

	# PPC64+others may want to eventually be added to this logic if they
	# decide to be multilib compatible and FHS compliant. note that this
	# chunk of FHS compliance only applies to 64bit archs where 32bit
	# compatibility is a major concern (not IA64, for example).

	# amd64's 2005.0 is the first amd64 profile to not need this code.
	# 2005.0 is setup properly, and this is executed as part of the
	# 2004.3 -> 2005.0 upgrade script.
	# It can be removed after 2004.3 has been purged from portage.
	{ use amd64 || use ppc64; } && [ "$(get_libdir)" == "lib64" ] && ! has_multilib_profile && fix_lib64_symlinks

	# it appears that /lib/tls is sometimes not removed.  See bug
	# 69258 for more info.
	if [[ -d ${ROOT}/$(alt_libdir)/tls ]] && [[ ! -d ${D}/$(alt_libdir)/tls ]] ; then
		ewarn "nptlonly or -nptl in USE, removing /${ROOT}$(alt_libdir)/tls..."
		rm -r "${ROOT}"/$(alt_libdir)/tls || die
	fi

	# prepare /etc/ld.so.conf.d/ for files
	mkdir -p "${ROOT}"/etc/ld.so.conf.d

	# simple test to make sure our new glibc isnt completely broken.
	# make sure we don't test with statically built binaries since
	# they will fail.  also, skip if this glibc is a cross compiler.
	[[ ${ROOT} != "/" ]] && return 0
	[[ -d ${D}/$(get_libdir) ]] || return 0
	cd / #228809
	local x striptest
	for x in date env ls true uname ; do
		x=$(type -p ${x})
		[[ -z ${x} ]] && continue
		striptest=$(LC_ALL="C" file -L ${x} 2>/dev/null)
		[[ -z ${striptest} ]] && continue
		[[ ${striptest} == *"statically linked"* ]] && continue
		# we enter ${D} so to avoid trouble if the path contains
		# special characters; for instance if the path contains the
		# colon character (:), then the linker will try to split it
		# and look for the libraries in an unexpected place. This can
		# lead to unsafe code execution if the generated prefix is
		# within a world-writable directory
		# (e.g. /var/tmp/portage:${HOSTNAME})
		pushd "${D}"/$(get_libdir) 2>/dev/null
		./ld-*.so --library-path . ${x} > /dev/null \
			|| die "simple run test (${x}) failed"
		popd 2>/dev/null
	done
}