# Copyright 1999-2015 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

EAPI=5

inherit autotools eutils linux-info multilib toolchain-funcs versionator multilib-minimal

if [[ ${PV} = 9999* ]]; then
	EGIT_REPO_URI="git://anongit.freedesktop.org/systemd/systemd"
	inherit git-2
else
	patchset=1
	SRC_URI="http://www.freedesktop.org/software/systemd/systemd-${PV}.tar.xz -> systemd-${PV}-r1.tar.xz"
	if [[ -n "${patchset}" ]]; then
				SRC_URI="${SRC_URI}
					http://dev.gentoo.org/~ssuominen/${P}-patches-${patchset}.tar.xz
					http://dev.gentoo.org/~williamh/dist/${P}-patches-${patchset}.tar.xz"
			fi
	KEYWORDS="alpha amd64 arm arm64 hppa ia64 m68k ~mips ppc ppc64 s390 sh sparc x86"
fi

DESCRIPTION="Linux dynamic and persistent device naming support (aka userspace devfs)"
HOMEPAGE="http://www.freedesktop.org/wiki/Software/systemd"

LICENSE="LGPL-2.1 MIT GPL-2"
SLOT="0"
IUSE="acl doc +firmware-loader gudev introspection +kmod selinux static-libs"

RESTRICT="test"

COMMON_DEPEND=">=sys-apps/util-linux-2.20
	acl? ( sys-apps/acl )
	gudev? ( >=dev-libs/glib-2.34.3[${MULTILIB_USEDEP}] )
	introspection? ( >=dev-libs/gobject-introspection-1.31.1 )
	kmod? ( >=sys-apps/kmod-14 )
	selinux? ( >=sys-libs/libselinux-2.1.9 )
	!<sys-libs/glibc-2.11
	!sys-apps/gentoo-systemd-integration
	!sys-apps/systemd
	abi_x86_32? (
		!<=app-emulation/emul-linux-x86-baselibs-20130224-r7
		!app-emulation/emul-linux-x86-baselibs[-abi_x86_32(-)]
	)"
DEPEND="${COMMON_DEPEND}
	dev-util/gperf
	>=sys-devel/make-3.82-r4
	virtual/os-headers
	virtual/pkgconfig
	!<sys-kernel/linux-headers-2.6.32
	doc? ( >=dev-util/gtk-doc-1.18 )"
if [[ ${PV} = 9999* ]]; then
	DEPEND="${DEPEND}
		app-text/docbook-xml-dtd:4.2
		app-text/docbook-xsl-stylesheets
		dev-libs/libxslt
		>=dev-util/intltool-0.50"
fi
RDEPEND="${COMMON_DEPEND}
	!sys-apps/coldplug
	!<sys-fs/lvm2-2.02.97-r1
	!sys-fs/device-mapper
	!<sys-fs/udev-init-scripts-22
	!<sys-kernel/dracut-017-r1
	!<sys-kernel/genkernel-3.4.25
	!<sec-policy/selinux-base-2.20120725-r10
	gudev? ( !dev-libs/libgudev )"
PDEPEND=">=sys-apps/hwids-20130717-r1[udev]
	>=sys-fs/udev-init-scripts-25"

S=${WORKDIR}/systemd-${PV}

# The multilib-build.eclass doesn't handle situation where the installed headers
# are different in ABIs. In this case, we install libgudev headers in native
# ABI but not for non-native ABI.
multilib_check_headers() { :; }

check_default_rules() {
	# Make sure there are no sudden changes to upstream rules file
	# (more for my own needs than anything else ...)
	local udev_rules_md5=7d3733faee4203fd7c75c3f3c0d55741
	MD5=$(md5sum < "${S}"/rules/50-udev-default.rules)
	MD5=${MD5/  -/}
	if [[ ${MD5} != ${udev_rules_md5} ]]; then
		eerror "50-udev-default.rules has been updated, please validate!"
		eerror "md5sum: ${MD5}"
		die "50-udev-default.rules has been updated, please validate!"
	fi
}

pkg_setup() {
	CONFIG_CHECK="~BLK_DEV_BSG ~DEVTMPFS ~!IDE ~INOTIFY_USER ~!SYSFS_DEPRECATED ~!SYSFS_DEPRECATED_V2 ~SIGNALFD ~EPOLL"
	linux-info_pkg_setup

	# Based on README from tarball:
	local MINKV=3.0
	# These arch's have the mandatory accept4() function support in Linux 2.6.32.61, see:
	# $ grep -r define.*accept4 linux-2.6.32.61/*
	if use amd64 || use ia64 || use mips || use sparc || use x86; then
		MINKV=2.6.32
	fi

	if kernel_is -lt ${MINKV//./ }; then
		eerror "Your running kernel is too old to run this version of ${P}"
		eerror "You need to upgrade kernel at least to ${MINKV}"
	fi
}

src_prepare() {
	if ! [[ ${PV} = 9999* ]]; then
		# secure_getenv() disable for non-glibc systems wrt bug #443030
		if ! [[ $(grep -r secure_getenv * | wc -l) -eq 20 ]]; then
			eerror "The line count for secure_getenv() failed, see bug #443030"
			die
		fi
	fi

	# backport some patches
	if [[ -n "${patchset}" ]]; then
		EPATCH_SUFFIX=patch EPATCH_FORCE=yes epatch
	fi

	# These are missing from upstream 50-udev-default.rules
	cat <<-EOF > "${T}"/40-gentoo.rules
	# Gentoo specific usb group
	SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", GROUP="usb"
	# Keep this for Linux 2.6.32 kernels with accept4() support like .60 wrt #457868
	SUBSYSTEM=="mem", KERNEL=="null|zero|full|random|urandom", MODE="0666"
	EOF

	# Create link to systemd-udevd.8 here to avoid parallel build problem and
	# while at it, create convinience link to `man 8 udevd` even if upstream
	# doesn't do that anymore
	local man
	for man in udevd systemd-udevd; do
		echo '.so systemd-udevd.service.8' > "${T}"/${man}.8
	done

	# Remove requirements for gettext and intltool wrt bug #443028
	if ! has_version dev-util/intltool && ! [[ ${PV} = 9999* ]]; then
		sed -i \
			-e '/INTLTOOL_APPLIED_VERSION=/s:=.*:=0.40.0:' \
			-e '/XML::Parser perl module is required for intltool/s|^|:|' \
			configure || die
		eval export INTLTOOL_{EXTRACT,MERGE,UPDATE}=/bin/true
		eval export {MSG{FMT,MERGE},XGETTEXT}=/bin/true
	fi

	# apply user patches
	epatch_user

	# compile with older versions of gcc #451110
	version_is_at_least 4.6 $(gcc-version) || \
		sed -i 's:static_assert:alsdjflkasjdfa:' src/shared/macro.h

	# change rules back to group uucp instead of dialout for now wrt #454556
	sed -i -e 's/GROUP="dialout"/GROUP="uucp"/' rules/*.rules || die

	if [[ ! -e configure ]]; then
		if use doc; then
			gtkdocize --docdir docs || die "gtkdocize failed"
		else
			echo 'EXTRA_DIST =' > docs/gtk-doc.make
		fi
		eautoreconf
	else
		check_default_rules
		elibtoolize
	fi

	# Restore possibility of running --enable-static wrt #472608
	sed -i \
		-e '/--enable-static is not supported by systemd/s:as_fn_error:echo:' \
		configure || die

	if ! use elibc_glibc; then #443030
		echo '#define secure_getenv(x) NULL' >> config.h.in
		sed -i -e '/error.*secure_getenv/s:.*:#define secure_getenv(x) NULL:' src/shared/missing.h || die
	fi
}

multilib_src_configure() {
	tc-export CC #463846

	local econf_args
	econf_args=(
		ac_cv_search_cap_init=
		ac_cv_header_sys_capability_h=yes
		DBUS_CFLAGS=' '
		DBUS_LIBS=' '
		--docdir=/usr/share/doc/${PF}
		--libdir=/usr/$(get_libdir)
		--with-html-dir=/usr/share/doc/${PF}/html
		--with-rootprefix=
		--without-python
		--disable-python-devel
		--disable-audit
		--disable-coredump
		--disable-hostnamed
		--disable-ima
		--disable-libcryptsetup
		--disable-localed
		--disable-logind
		--disable-myhostname
		--disable-nls
		--disable-pam
		--disable-quotacheck
		--disable-readahead
		$(use_enable gudev)
		--enable-split-usr
		--disable-tcpwrap
		--disable-timedated
		--disable-xz
		--disable-polkit
		--disable-tmpfiles
		--disable-machined
		--disable-xattr
	)
	# Use pregenerated copies when possible wrt #480924
	if ! [[ ${PV} = 9999* ]]; then
		econf_args+=(
			--disable-manpages
		)
	fi
	if multilib_is_native_abi; then
		econf_args+=(
			--with-rootlibdir=/$(get_libdir)
			$(use_enable acl)
			$(use_enable doc gtk-doc)
			$(use_enable kmod)
			$(use_enable selinux)
			$(use_enable static-libs static)
			--enable-introspection=$(usex introspection)
		)
	else
		econf_args+=(
			--with-rootlibdir=/usr/$(get_libdir)
			--disable-acl
			--disable-gtk-doc
			--disable-kmod
			--disable-selinux
			--disable-static
			--disable-manpages
			--enable-introspection=no
		)
	fi
	use firmware-loader && econf_args+=( --with-firmware-path="/lib/firmware/updates:/lib/firmware" )

	ECONF_SOURCE=${S} econf "${econf_args[@]}"
}

multilib_src_compile() {
	echo 'BUILT_SOURCES: $(BUILT_SOURCES)' > "${T}"/Makefile.extra
	emake -f Makefile -f "${T}"/Makefile.extra BUILT_SOURCES

	# Most of the parallel build problems were solved by >=sys-devel/make-3.82-r4,
	# but not everything -- separate building of the binaries as a workaround,
	# which will force internal libraries required for the helpers to be built
	# early enough, like eg. libsystemd-shared.la
	if multilib_is_native_abi; then
		local lib_targets=( libudev.la )
		use gudev && lib_targets+=( libgudev-1.0.la )
		emake "${lib_targets[@]}"

		local exec_targets=(
			systemd-udevd
			udevadm
		)
		emake "${exec_targets[@]}"

		local helper_targets=(
			ata_id
			cdrom_id
			collect
			scsi_id
			v4l_id
			accelerometer
			mtd_probe
		)
		emake "${helper_targets[@]}"

		if [[ ${PV} = 9999* ]]; then
			local man_targets=(
				man/udev.7
				man/udevadm.8
				man/systemd-udevd.service.8
			)
			emake "${man_targets[@]}"
		fi

		if use doc; then
			emake -C docs/libudev
			use gudev && emake -C docs/gudev
		fi
	else
		local lib_targets=( libudev.la )
		use gudev && lib_targets+=( libgudev-1.0.la )
		emake "${lib_targets[@]}"
	fi
}

multilib_src_install() {
	if multilib_is_native_abi; then
		local lib_LTLIBRARIES="libudev.la" \
			pkgconfiglib_DATA="src/libudev/libudev.pc"

		local targets=(
			install-libLTLIBRARIES
			install-includeHEADERS
			install-libgudev_includeHEADERS
			install-rootbinPROGRAMS
			install-rootlibexecPROGRAMS
			install-udevlibexecPROGRAMS
			install-dist_udevconfDATA
			install-dist_udevrulesDATA
			install-girDATA
			install-pkgconfiglibDATA
			install-sharepkgconfigDATA
			install-typelibsDATA
			install-dist_docDATA
			libudev-install-hook
			install-directories-hook
			install-dist_bashcompletionDATA
		)

		if use gudev; then
			lib_LTLIBRARIES+=" libgudev-1.0.la"
			pkgconfiglib_DATA+=" src/gudev/gudev-1.0.pc"
		fi

		# add final values of variables:
		targets+=(
			rootlibexec_PROGRAMS=systemd-udevd
			rootbin_PROGRAMS=udevadm
			lib_LTLIBRARIES="${lib_LTLIBRARIES}"
			pkgconfiglib_DATA="${pkgconfiglib_DATA}"
			INSTALL_DIRS='$(sysconfdir)/udev/rules.d \
					$(sysconfdir)/udev/hwdb.d'
			dist_bashcompletion_DATA="shell-completion/bash/udevadm"
		)
		emake -j1 DESTDIR="${D}" "${targets[@]}"

		if use doc; then
			emake -C docs/libudev DESTDIR="${D}" install
			use gudev && emake -C docs/gudev DESTDIR="${D}" install
		fi

		# install udevadm compatibility symlink
		dosym {../bin,sbin}/udevadm

		# install udevd to /sbin and remove empty and redudant directory
		# /lib/systemd because systemd is installed to /usr wrt #462750
		mv "${D}"/{lib/systemd/systemd-,sbin/}udevd || die
		rm -r "${D}"/lib/systemd

		if [[ ${PV} = 9999* ]]; then
			doman man/{udev.7,udevadm.8,systemd-udevd.service.8}
		else
			doman "${S}"/man/{udev.7,udevadm.8,systemd-udevd.service.8}
		fi
	else
		local lib_LTLIBRARIES="libudev.la" \
			pkgconfiglib_DATA="src/libudev/libudev.pc" \
			include_HEADERS="src/libudev/libudev.h"

		local targets=(
			install-libLTLIBRARIES
			install-includeHEADERS
			install-pkgconfiglibDATA
		)

		if use gudev; then
			lib_LTLIBRARIES+=" libgudev-1.0.la"
			pkgconfiglib_DATA+=" src/gudev/gudev-1.0.pc"
		fi

		targets+=(
			lib_LTLIBRARIES="${lib_LTLIBRARIES}"
			pkgconfiglib_DATA="${pkgconfiglib_DATA}"
			include_HEADERS="${include_HEADERS}"
			)
		emake -j1 DESTDIR="${D}" "${targets[@]}"
	fi
}

multilib_src_install_all() {
	dodoc TODO

	prune_libtool_files --all
	rm -f \
		"${D}"/lib/udev/rules.d/99-systemd.rules \
		"${D}"/usr/share/doc/${PF}/LICENSE.*

	# see src_prepare() for content of these files
	insinto /lib/udev/rules.d
	doins "${T}"/40-gentoo.rules
	doman "${T}"/{systemd-,}udevd.8
}

pkg_preinst() {
	local htmldir
	for htmldir in gudev libudev; do
		if [[ -d ${ROOT}usr/share/gtk-doc/html/${htmldir} ]]; then
			rm -rf "${ROOT}"usr/share/gtk-doc/html/${htmldir}
		fi
		if [[ -d ${D}/usr/share/doc/${PF}/html/${htmldir} ]]; then
			dosym ../../doc/${PF}/html/${htmldir} \
				/usr/share/gtk-doc/html/${htmldir}
		fi
	done
}

pkg_postinst() {
	mkdir -p "${ROOT}"run

	# "losetup -f" is confused if there is an empty /dev/loop/, Bug #338766
	# So try to remove it here (will only work if empty).
	rmdir "${ROOT}"dev/loop 2>/dev/null
	if [[ -d ${ROOT}dev/loop ]]; then
		ewarn "Please make sure your remove /dev/loop,"
		ewarn "else losetup may be confused when looking for unused devices."
	fi

	# 64-device-mapper.rules is related to sys-fs/device-mapper which we block
	# in favor of sys-fs/lvm2
	old_dm_rules=${ROOT}etc/udev/rules.d/64-device-mapper.rules
	if [[ -f ${old_dm_rules} ]]; then
		rm -f "${old_dm_rules}"
		einfo "Removed unneeded file ${old_dm_rules}"
	fi

	local fstab="${ROOT}"etc/fstab dev path fstype rest
	while read -r dev path fstype rest; do
		if [[ ${path} == /dev && ${fstype} != devtmpfs ]]; then
			ewarn "You need to edit your /dev line in ${fstab} to have devtmpfs"
			ewarn "filesystem. Otherwise udev won't be able to boot."
			ewarn "See, http://bugs.gentoo.org/453186"
		fi
	done < "${fstab}"

	if [[ -d ${ROOT}usr/lib/udev ]]; then
		ewarn
		ewarn "Please re-emerge all packages on your system which install"
		ewarn "rules and helpers in /usr/lib/udev. They should now be in"
		ewarn "/lib/udev."
		ewarn
		ewarn "One way to do this is to run the following command:"
		ewarn "emerge -av1 \$(qfile -q -S -C /usr/lib/udev)"
		ewarn "Note that qfile can be found in app-portage/portage-utils"
	fi

	local old_net_name="${ROOT}"etc/udev/rules.d/80-net-name-slot.rules
	if [[ -f ${old_net_name} ]]; then
		local old_net_sum=bebf4bd1b6b668e9ff34a3999aa6ff32
		MD5=$(md5sum < "${old_net_name}")
		MD5=${MD5/  -/}
		if [[ ${MD5} == ${old_net_sum} ]]; then
			ewarn "Removing unmodified file ${old_net_name} from old udev installation to enable"
			ewarn "the new predictable network interface naming."
			rm -f "${old_net_name}"
		fi
	fi

	local old_cd_rules="${ROOT}"etc/udev/rules.d/70-persistent-cd.rules
	local old_net_rules="${ROOT}"etc/udev/rules.d/70-persistent-net.rules
	for old_rules in "${old_cd_rules}" "${old_net_rules}"; do
		if [[ -f ${old_rules} ]]; then
			ewarn
			ewarn "File ${old_rules} is from old udev installation but if you still use it,"
			ewarn "rename it to something else starting with 70- to silence this deprecation"
			ewarn "warning."
		fi
	done

	elog
	elog "Starting from version >= 197 the new predictable network interface names are"
	elog "used by default, see:"
	elog "http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames"
	elog "http://cgit.freedesktop.org/systemd/systemd/tree/src/udev/udev-builtin-net_id.c"
	elog
	elog "Example command to get the information for the new interface name before booting"
	elog "(replace <ifname> with, for example, eth0):"
	elog "# udevadm test-builtin net_id /sys/class/net/<ifname> 2> /dev/null"
	elog
	elog "You can use either kernel parameter \"net.ifnames=0\", create empty"
	elog "file /etc/udev/rules.d/80-net-name-slot.rules, or symlink it to /dev/null"
	elog "to disable the feature."

	if has_version 'sys-apps/biosdevname'; then
		ewarn
		ewarn "You can replace the functionality of sys-apps/biosdevname which has been"
		ewarn "detected to be installed with the new predictable network interface names."
	fi

	ewarn
	ewarn "You need to restart udev as soon as possible to make the upgrade go"
	ewarn "into effect."
	ewarn "The method you use to do this depends on your init system."
	if has_version 'sys-apps/openrc'; then
		ewarn "For sys-apps/openrc users it is:"
		ewarn "# /etc/init.d/udev --nodeps restart"
	fi

	elog
	elog "For more information on udev on Gentoo, upgrading, writing udev rules, and"
	elog "fixing known issues visit:"
	elog "http://wiki.gentoo.org/wiki/Udev"
	elog "http://wiki.gentoo.org/wiki/Udev/upgrade"

	# Update hwdb database in case the format is changed by udev version.
	if has_version 'sys-apps/hwids[udev]'; then
		udevadm hwdb --update --root="${ROOT%/}"
		# Only reload when we are not upgrading to avoid potential race w/ incompatible hwdb.bin and the running udevd
		if [[ -z ${REPLACING_VERSIONS} ]]; then
			# http://cgit.freedesktop.org/systemd/systemd/commit/?id=1fab57c209035f7e66198343074e9cee06718bda
			if [[ ${ROOT} != "" ]] && [[ ${ROOT} != "/" ]]; then
				return 0
			fi
			udevadm control --reload
		fi
	fi
}