# Copyright 2003-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7
PYTHON_COMPAT=( python3_{8..9} )

inherit bash-completion-r1 flag-o-matic linux-info meson-multilib ninja-utils python-any-r1 toolchain-funcs udev usr-ldscript

if [[ ${PV} = 9999* ]] ; then
	EGIT_REPO_URI="https://github.com/systemd/systemd.git"
	inherit git-r3
else
	if [[ ${PV} == *.* ]] ; then
		MY_PN=systemd-stable
	else
		MY_PN=systemd
	fi

	MY_PV="${PV/_/-}"
	MY_P="${MY_PN}-${MY_PV}"
	S="${WORKDIR}/${MY_P}"
	SRC_URI="https://github.com/systemd/${MY_PN}/archive/v${MY_PV}/${MY_P}.tar.gz"

	# musl patches taken from:
	# http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-core/systemd/systemd
	SRC_URI+="
	elibc_musl? (
		https://dev.gentoo.org/~gyakovlev/distfiles/systemd-musl-patches-${PV}.1-r1.tar.xz
		https://dev.gentoo.org/~soap/distfiles/systemd-musl-patches-${PV}.1-r1.tar.xz
	)"

	KEYWORDS="~alpha amd64 arm ~arm64 hppa ~ia64 ~m68k ~mips ppc ppc64 ~s390 sparc x86"
fi

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

LICENSE="LGPL-2.1 MIT GPL-2"
SLOT="0"
IUSE="acl +kmod selinux static-libs test"
RESTRICT="!test? ( test )"

BDEPEND="
	dev-util/gperf
	sys-devel/gettext
	>=sys-apps/coreutils-8.16
	virtual/pkgconfig
	app-text/docbook-xml-dtd:4.2
	app-text/docbook-xml-dtd:4.5
	app-text/docbook-xsl-stylesheets
	dev-libs/libxslt
	${PYTHON_DEPS}
	$(python_gen_any_dep 'dev-python/jinja[${PYTHON_USEDEP}]')
	test? (
		app-text/tree
		dev-lang/perl
	)
"
COMMON_DEPEND="
	>=sys-apps/util-linux-2.30[${MULTILIB_USEDEP}]
	sys-libs/libcap:0=[${MULTILIB_USEDEP}]
	virtual/libcrypt:=[${MULTILIB_USEDEP}]
	acl? ( sys-apps/acl )
	kmod? ( >=sys-apps/kmod-15 )
	selinux? ( >=sys-libs/libselinux-2.1.9 )
"
DEPEND="${COMMON_DEPEND}
	>=sys-kernel/linux-headers-3.9
"
RDEPEND="${COMMON_DEPEND}
	acct-group/kmem
	acct-group/tty
	acct-group/audio
	acct-group/cdrom
	acct-group/dialout
	acct-group/disk
	acct-group/input
	acct-group/kvm
	acct-group/lp
	acct-group/render
	acct-group/tape
	acct-group/video
	!sys-apps/gentoo-systemd-integration
	!sys-apps/systemd
"
PDEPEND=">=sys-apps/hwids-20140304[udev]
	>=sys-fs/udev-init-scripts-34"

python_check_deps() {
	has_version -b "dev-python/jinja[${PYTHON_USEDEP}]"
}

pkg_setup() {
	if [[ ${MERGE_TYPE} != buildonly ]] ; then
		CONFIG_CHECK="~BLK_DEV_BSG ~DEVTMPFS ~!IDE ~INOTIFY_USER ~!SYSFS_DEPRECATED ~!SYSFS_DEPRECATED_V2 ~SIGNALFD ~EPOLL ~FHANDLE ~NET ~!FW_LOADER_USER_HELPER ~UNIX"
		linux-info_pkg_setup

		# CONFIG_FHANDLE was introduced by 2.6.39
		local MINKV=2.6.39

		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

		if kernel_is -lt 3 7 ; then
			ewarn "Your running kernel is too old to have firmware loader and"
			ewarn "this version of ${P} doesn't have userspace firmware loader"
			ewarn "If you need firmware support, you need to upgrade kernel at least to 3.7"
		fi
	fi
}

src_prepare() {
	local PATCHES=(
		# backport from 250 to silence musl warnings
		"${FILESDIR}/249-sys-include-posix.patch"
		"${FILESDIR}/249-libudev-static.patch"
	)
	use elibc_musl && PATCHES+=( "${WORKDIR}"/musl-patches )

	default
}

multilib_src_configure() {
	local emesonargs=(
		$(meson_native_use_bool acl)
		-Defi=false
		$(meson_native_use_bool kmod)
		$(meson_native_use_bool selinux)
		-Dlink-udev-shared=false
		-Dsplit-usr=true
		-Drootlibdir="${EPREFIX}/usr/$(get_libdir)"
		$(meson_use static-libs static-libudev)

		# Prevent automagic deps
		-Dgcrypt=false
		-Dlibcryptsetup=false
		-Didn=false
		-Dlibidn=false
		-Dlibidn2=false
		-Dlibiptc=false
		-Dp11kit=false
		-Dseccomp=false
		-Dlz4=false
		-Dxz=false
	)
	use elibc_musl && emesonargs+=(
		-Dgshadow=false
		-Dsmack=false
		-Dutmp=false
	)

	meson_src_configure
}

src_configure() {
	# Prevent conflicts with i686 cross toolchain, bug 559726
	tc-export AR CC NM OBJCOPY RANLIB
	python_setup

	use elibc_musl && append-cppflags -D__UAPI_DEF_ETHHDR=0

	multilib-minimal_src_configure
}

multilib_src_compile() {
	# meson creates this link
	local libudev=$(readlink libudev.so.1)

	local targets=(
		${libudev}
		src/libudev/libudev.pc
	)
	if use static-libs; then
		targets+=( libudev.a )
	fi
	if multilib_is_native_abi; then
		targets+=(
			udevadm
			src/udev/ata_id
			src/udev/cdrom_id
			src/udev/fido_id
			src/udev/mtd_probe
			src/udev/scsi_id
			src/udev/udev.pc
			src/udev/v4l_id
			man/udev.conf.5
			man/systemd.link.5
			man/hwdb.7
			man/udev.7
			man/systemd-udevd.service.8
			man/udevadm.8
			rules.d/50-udev-default.rules
			rules.d/64-btrfs.rules
		)
	fi
	eninja "${targets[@]}"
}

src_test() {
	# The testsuite is *very* finicky. Don't try running it in
	# containers or anything but a full VM or on bare metal.
	# udev calls 'mknod' a number of times, and this interacts
	# badly with kernel namespaces.

	if [[ ! -w /dev ]]; then
		ewarn "udev tests needs full access to /dev"
		ewarn "Skipping tests"
	else
		meson-multilib_src_test
	fi
}

multilib_src_test() {
	# two binaries required by udev-test.pl
	eninja systemd-detect-virt test-udev
	local -x PATH="${PWD}:${PATH}"

	# prepare ${BUILD_DIR}/test/sys, required by udev-test.pl
	"${EPYTHON}" "${S}"/test/sys-script.py test || die

	# the perl script contains all the udev tests
	"${S}"/test/udev-test.pl || die
}

multilib_src_install() {
	local libudev=$(readlink libudev.so.1)

	dolib.so {${libudev},libudev.so.1,libudev.so}
	gen_usr_ldscript -a udev
	use static-libs && dolib.a libudev.a

	insinto "/usr/$(get_libdir)/pkgconfig"
	doins src/libudev/libudev.pc

	if multilib_is_native_abi ; then
		into /
		dobin udevadm

		dosym ../../bin/udevadm /lib/systemd/systemd-udevd

		exeinto /lib/udev
		doexe src/udev/{ata_id,cdrom_id,fido_id,mtd_probe,scsi_id,v4l_id}

		# Install generated rules (${BUILD_DIR}/rules.d/*.rules)
		insinto /lib/udev/rules.d
		doins rules.d/*.rules

		insinto /usr/share/pkgconfig
		doins src/udev/udev.pc

		mv man/systemd-udevd.service.8 man/systemd-udevd.8 || die
		rm man/systemd-udevd-{control,kernel}.socket.8 || die
		doman man/*.[0-9]
	fi
}

multilib_src_install_all() {
	doheader src/libudev/libudev.h

	insinto /etc/udev
	doins src/udev/udev.conf
	keepdir /etc/udev/{hwdb.d,rules.d}

	insinto /lib/systemd/network
	doins network/99-default.link

	# Install static rules (${S}/rules.d/*.rules)
	insinto /lib/udev/rules.d
	doins rules.d/*.rules
	doins "${FILESDIR}"/40-gentoo.rules

	dobashcomp shell-completion/bash/udevadm

	insinto /usr/share/zsh/site-functions
	doins shell-completion/zsh/_udevadm

	einstalldocs
}

pkg_preinst() {
	has_version 'sys-fs/eudev' && HAD_EUDEV=1
}

pkg_postinst() {
	# 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
		# https://cgit.freedesktop.org/systemd/systemd/commit/?id=1fab57c209035f7e66198343074e9cee06718bda
		[[ -z ${REPLACING_VERSIONS} ]] && udev_reload
	fi

	if [[ ${HAD_EUDEV} -eq 1 ]] ; then
		ewarn
		ewarn "${P} defaults to predictable interface renaming, as described in the URL below:"
		ewarn "https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames"
		ewarn
		ewarn "If you wish to disable this, please see the above documentation, or set"
		ewarn "net.ifnames=0 on the kernel command line."
	fi
}