--- /dev/null
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+inherit eutils flag-o-matic linux-info linux-mod multilib readme.gentoo toolchain-funcs
+
+AUFS_VERSION="${PV%%_p*}"
+# highest branch version
+PATCH_MAX_VER=2
+# highest supported version
+KERN_MAX_VER=3
+# lowest supported version
+KERN_MIN_VER=0
+
+DESCRIPTION="An entirely re-designed and re-implemented Unionfs"
+HOMEPAGE="http://aufs.sourceforge.net/"
+SRC_URI="https://dev.gentoo.org/~jlec/distfiles/aufs4-standalone-${PV}.tar.xz"
+
+LICENSE="GPL-2"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="debug doc fuse hfs inotify kernel-patch nfs pax_kernel ramfs"
+
+DEPEND="
+ dev-util/patchutils
+ dev-vcs/git"
+RDEPEND="
+ sys-fs/aufs-util
+ !sys-fs/aufs
+ !sys-fs/aufs2
+ !sys-fs/aufs3"
+
+S="${WORKDIR}"/${PN}-standalone
+
+MODULE_NAMES="aufs(misc:${S})"
+
+pkg_setup() {
+ CONFIG_CHECK+=" !AUFS_FS"
+ use inotify && CONFIG_CHECK+=" ~FSNOTIFY"
+ use nfs && CONFIG_CHECK+=" EXPORTFS"
+ use fuse && CONFIG_CHECK+=" ~FUSE_FS"
+ use hfs && CONFIG_CHECK+=" ~HFSPLUS_FS"
+ use pax_kernel && CONFIG_CHECK+=" PAX" && ERROR_PAX="Please use hardened sources"
+
+ # this is needed so merging a binpkg ${PN} is possible w/out a kernel unpacked on the system
+ [ -n "$PKG_SETUP_HAS_BEEN_RAN" ] && return
+
+ get_version
+ kernel_is lt 4 ${KERN_MIN_VER} 0 && die "the kernel version isn't supported by upstream anymore. Please upgrade."
+ kernel_is gt 4 ${KERN_MAX_VER} 99 && die "kernel too new"
+
+ linux-mod_pkg_setup
+
+ if [[ "${KV_MINOR}" -gt "${PATCH_MAX_VER}" ]]; then
+ PATCH_BRANCH="x-rcN"
+ else
+ PATCH_BRANCH="${KV_MINOR}"
+ fi
+
+ case ${KV_EXTRA} in
+ "")
+ elog "It seems you are using vanilla-sources with aufs4"
+ elog "Please use sys-kernel/aufs-sources with USE=vanilla"
+ elog "This will save you the nasty reemerge of sys-fs/aufs4 on every kernel upgrade"
+ ;;
+ "-gentoo")
+ elog "It seems you are using gentoo-sources with aufs4"
+ elog "Please use sys-kernel/aufs-sources"
+ elog "This will save you the nasty reemerge of sys-fs/aufs4 on every kernel upgrade"
+ ;;
+ esac
+
+ pushd "${T}" &> /dev/null
+ unpack ${A}
+ cd ${PN}-standalone || die
+ local module_branch=origin/${PN}.${PATCH_BRANCH}
+ einfo "Using ${module_branch} as patch source"
+ git checkout -q -b local-${PN}.${PATCH_BRANCH} ${module_branch} || die
+ combinediff ${PN}-base.patch ${PN}-standalone.patch > "${T}"/combined-1.patch
+ combinediff "${T}"/combined-1.patch ${PN}-mmap.patch > ${PN}-standalone-base-mmap-combined.patch
+ if ! ( patch -p1 --dry-run --force -R -d ${KV_DIR} < ${PN}-standalone-base-mmap-combined.patch > /dev/null ); then
+ if use kernel-patch; then
+ cd ${KV_DIR}
+ ewarn "Patching your kernel..."
+ patch --no-backup-if-mismatch --force -p1 -R -d ${KV_DIR} < "${T}"/${PN}-standalone/${PN}-standalone-base-mmap-combined.patch >/dev/null
+ epatch "${T}"/${PN}-standalone/${PN}-standalone-base-mmap-combined.patch
+ ewarn "You need to compile your kernel with the applied patch"
+ ewarn "to be able to load and use the aufs kernel module"
+ else
+ eerror "You need to apply a patch to your kernel to compile and run the ${PN} module"
+ eerror "Either enable the kernel-patch useflag to do it with this ebuild"
+ eerror "or apply "${T}"/${PN}-standalone/${PN}-standalone-base-mmap-combined.patch by hand"
+ die "missing kernel patch, please apply it first"
+ fi
+ fi
+ popd &> /dev/null
+ export PKG_SETUP_HAS_BEEN_RAN=1
+}
+
+set_config() {
+ for option in $*; do
+ grep -q "^CONFIG_AUFS_${option} =" config.mk || die "${option} is not a valid config option"
+ sed "/^CONFIG_AUFS_${option}/s:=:= y:g" -i config.mk || die
+ done
+}
+
+src_prepare() {
+ local module_branch=origin/${PN}.${PATCH_BRANCH}
+
+ einfo "Using for module creation branch ${module_branch}"
+ git checkout -q -b local-gentoo ${module_branch} || die
+
+ # All config options to off
+ sed "s:= y:=:g" -i config.mk || die
+
+ set_config RDU BRANCH_MAX_127 SBILIST
+
+ use debug && set_config DEBUG
+ use fuse && set_config BR_FUSE POLL
+ use hfs && set_config BR_HFSPLUS
+ use inotify && set_config HNOTIFY HFSNOTIFY
+ use nfs && set_config EXPORT
+ use nfs && ( use amd64 || use ppc64 ) && set_config INO_T_64
+ use ramfs && set_config BR_RAMFS
+
+ if use pax_kernel; then
+ epatch "${FILESDIR}"/pax-4.patch
+ fi
+
+ sed -i "s:aufs.ko usr/include/linux/aufs_type.h:aufs.ko:g" Makefile || die
+}
+
+src_compile() {
+ local ARCH=x86
+
+ emake \
+ CC=$(tc-getCC) \
+ LD=$(tc-getLD) \
+ LDFLAGS="$(raw-ldflags)" \
+ ARCH=$(tc-arch-kernel) \
+ CONFIG_AUFS_FS=m \
+ KDIR="${KV_OUT_DIR}"
+}
+
+src_install() {
+ linux-mod_src_install
+
+ insinto /usr/share/doc/${PF}
+
+ use doc && doins -r Documentation
+
+ use kernel-patch || doins "${T}"/${PN}-standalone/${PN}-standalone-base-mmap-combined.patch
+
+ dodoc Documentation/filesystems/aufs/README "${T}"/${PN}-standalone/{aufs4-loopback,vfs-ino,tmpfs-idr}.patch
+
+ readme.gentoo_create_doc
+}
+
+pkg_postinst() {
+ readme.gentoo_pkg_postinst
+ linux-mod_pkg_postinst
+}