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diff --git a/eclass/rpm5.eclass b/eclass/rpm5.eclass
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+# Copyright 1999-2009 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Header: /var/cvsroot/gentoo-x86/eclass/rpm.eclass,v 1.20 2010/07/18 21:57:20 vapier Exp $
+
+# @ECLASS: rpm.eclass
+# @MAINTAINER:
+# base-system@gentoo.org
+# @BLURB: convenience class for extracting RPMs
+
+inherit eutils
+
+DEPEND=">=app-arch/rpm5offset-9.0"
+
+# @FUNCTION: rpm_unpack
+# @USAGE: <rpms>
+# @DESCRIPTION:
+# Unpack the contents of the specified rpms like the unpack() function.
+rpm5_unpack() {
+	[[ $# -eq 0 ]] && set -- ${A}
+	local a rpmoff decompcmd
+	for a in "$@" ; do
+		echo ">>> Unpacking ${a} to ${PWD}"
+		if [[ ${a} == ./* ]] ; then
+			: nothing to do -- path is local
+		elif [[ ${a} == ${DISTDIR}/* ]] ; then
+			ewarn 'QA: do not use ${DISTDIR} with rpm_unpack -- it is added for you'
+		elif [[ ${a} == /* ]] ; then
+			ewarn 'QA: do not use full paths with rpm_unpack -- use ./ paths instead'
+		else
+			a="${DISTDIR}/${a}"
+		fi
+#		rpm2tar -O "${a}" | tar xf - || die "failure unpacking ${a}"
+		rpmoff=`rpm5offset < ${a}`
+		[ -z "${rpmoff}" ] && return 1
+
+		decompcmd="lzma -dc"
+		if [ -n "`dd if=${a} skip=${rpmoff} bs=1 count=3 2>/dev/null | file - | grep bzip2`" ]; then
+			decompcmd="bzip2 -dc"
+		fi
+		if [ -n "`dd if=${a} skip=${rpmoff} bs=1 count=3 2>/dev/null | file - | grep gzip`" ]; then
+			decompcmd="gzip -dc"
+		fi
+
+		dd ibs=${rpmoff} skip=1 if=${a} 2> /dev/null \
+			| ${decompcmd} \
+			| cpio -idmu --no-preserve-owner --quiet || return 1
+	done
+}
+
+# @FUNCTION: srcrpm_unpack
+# @USAGE: <rpms>
+# @DESCRIPTION:
+# Unpack the contents of the specified rpms like the unpack() function as well
+# as any archives that it might contain.  Note that the secondary archive
+# unpack isn't perfect in that it simply unpacks all archives in the working
+# directory (with the assumption that there weren't any to start with).
+srcrpm5_unpack() {
+	[[ $# -eq 0 ]] && set -- ${A}
+	rpm5_unpack "$@"
+
+	# no .src.rpm files, then nothing to do
+	[[ "$* " != *".src.rpm " ]] && return 0
+
+	eshopts_push -s nullglob
+
+	# unpack everything
+	local a
+	for a in *.tar.{gz,bz2} *.t{gz,bz2} *.zip *.ZIP ; do
+		unpack "./${a}"
+		rm -f "${a}"
+	done
+
+	eshopts_pop
+
+	return 0
+}
+
+# @FUNCTION: rpm_src_unpack
+# @DESCRIPTION:
+# Automatically unpack all archives in ${A} including rpms.  If one of the
+# archives in a source rpm, then the sub archives will be unpacked as well.
+rpm5_src_unpack() {
+	local a
+	for a in ${A} ; do
+		case ${a} in
+		*.rpm) srcrpm5_unpack "${a}" ;;
+		*)     unpack "${a}" ;;
+		esac
+	done
+}
+
+# @FUNCTION: rpm_spec_epatch
+# @USAGE: [spec]
+# @DESCRIPTION:
+# Read the specified spec (defaults to ${PN}.spec) and attempt to apply
+# all the patches listed in it.  If the spec does funky things like moving
+# files around, well this won't handle that.
+rpm5_spec_epatch() {
+	local p spec=${1:-${PN}.spec}
+	local dir=${spec%/*}
+	grep '^%patch' "${spec}" | \
+	while read line ; do
+		set -- ${line}
+		p=$1
+		shift
+		EPATCH_OPTS="$*"
+		set -- $(grep "^P${p#%p}: " "${spec}")
+		shift
+		epatch "${dir:+${dir}/}$*"
+	done
+}
+
+EXPORT_FUNCTIONS src_unpack