# Copyright 1999-2018 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=6

WANT_AUTOMAKE="1.15"

inherit autotools bash-completion-r1 linux-info flag-o-matic systemd readme.gentoo-r1 pam

DESCRIPTION="LinuX Containers userspace utilities"
HOMEPAGE="https://linuxcontainers.org/"
SRC_URI="https://linuxcontainers.org/downloads/lxc/${P}.tar.gz"

KEYWORDS="*"

LICENSE="LGPL-3"
SLOT="0"
IUSE="apparmor doc etcconfigdir examples pam python seccomp selinux -templates"

RDEPEND="
	net-libs/gnutls
	sys-libs/libcap
	pam? ( virtual/pam )
	seccomp? ( sys-libs/libseccomp )
	selinux? ( sys-libs/libselinux )"

DEPEND="${RDEPEND}
	doc? ( >=app-text/docbook-sgml-utils-0.6.14-r2 )
	>=sys-kernel/linux-headers-3.2"

RDEPEND="${RDEPEND}
	sys-apps/util-linux
	app-misc/pax-utils
	virtual/awk"

PDEPEND="templates? ( app-emulation/lxc-templates )
	python? ( dev-python/python3-lxc )"

CONFIG_CHECK="~CGROUPS ~CGROUP_DEVICE
	~CPUSETS ~CGROUP_CPUACCT
	~CGROUP_SCHED

	~NAMESPACES
	~IPC_NS ~USER_NS ~PID_NS

	~CGROUP_FREEZER
	~UTS_NS ~NET_NS
	~VETH ~MACVLAN

	~POSIX_MQUEUE
	~!NETPRIO_CGROUP

	~!GRKERNSEC_CHROOT_MOUNT
	~!GRKERNSEC_CHROOT_DOUBLE
	~!GRKERNSEC_CHROOT_PIVOT
	~!GRKERNSEC_CHROOT_CHMOD
	~!GRKERNSEC_CHROOT_CAPS
	~!GRKERNSEC_PROC
	~!GRKERNSEC_SYSFS_RESTRICT
	~!GRKERNSEC_CHROOT_FINDTASK
"

ERROR_DEVPTS_MULTIPLE_INSTANCES="CONFIG_DEVPTS_MULTIPLE_INSTANCES:  needed for pts inside container"

ERROR_CGROUP_FREEZER="CONFIG_CGROUP_FREEZER:  needed to freeze containers"

ERROR_UTS_NS="CONFIG_UTS_NS:  needed to unshare hostnames and uname info"
ERROR_NET_NS="CONFIG_NET_NS:  needed for unshared network"

ERROR_VETH="CONFIG_VETH:  needed for internal (host-to-container) networking"
ERROR_MACVLAN="CONFIG_MACVLAN:  needed for internal (inter-container) networking"

ERROR_POSIX_MQUEUE="CONFIG_POSIX_MQUEUE:  needed for lxc-execute command"

ERROR_NETPRIO_CGROUP="CONFIG_NETPRIO_CGROUP:  as of kernel 3.3 and lxc 0.8.0_rc1 this causes LXCs to fail booting."

ERROR_GRKERNSEC_CHROOT_MOUNT="CONFIG_GRKERNSEC_CHROOT_MOUNT:  some GRSEC features make LXC unusable see postinst notes"
ERROR_GRKERNSEC_CHROOT_DOUBLE="CONFIG_GRKERNSEC_CHROOT_DOUBLE:  some GRSEC features make LXC unusable see postinst notes"
ERROR_GRKERNSEC_CHROOT_PIVOT="CONFIG_GRKERNSEC_CHROOT_PIVOT:  some GRSEC features make LXC unusable see postinst notes"
ERROR_GRKERNSEC_CHROOT_CHMOD="CONFIG_GRKERNSEC_CHROOT_CHMOD:  some GRSEC features make LXC unusable see postinst notes"
ERROR_GRKERNSEC_CHROOT_CAPS="CONFIG_GRKERNSEC_CHROOT_CAPS:  some GRSEC features make LXC unusable see postinst notes"
ERROR_GRKERNSEC_PROC="CONFIG_GRKERNSEC_PROC:  this GRSEC feature is incompatible with unprivileged containers"
ERROR_GRKERNSEC_SYSFS_RESTRICT="CONFIG_GRKERNSEC_SYSFS_RESTRICT:  this GRSEC feature is incompatible with unprivileged containers"

DOCS=(AUTHORS CONTRIBUTING MAINTAINERS NEWS README doc/FAQ.txt)

LXC_STATEDIR_PATH="/var"
LXC_CONFIG_PATH="/var/lib/lxc"

pkg_setup() {
	kernel_is -lt 4 7 && CONFIG_CHECK="${CONFIG_CHECK} ~DEVPTS_MULTIPLE_INSTANCES"
	linux-info_pkg_setup
}

PATCHES=(
	"${FILESDIR}"/${PN}-3.0.0-bash-completion.patch
	"${FILESDIR}"/${PN}-2.0.5-omit-sysconfig.patch # bug 558854
	"${FILESDIR}"/${P}-check-euid-for-caps.patch # crbug.com/1041546
)

src_prepare() {
	default
	eautoreconf
}

src_configure() {
	if use etcconfigdir ; then
		LXC_STATEDIR_PATH="/etc"
		LXC_CONFIG_PATH="/etc/lxc"
	fi
	append-flags -fno-strict-aliasing

	# --enable-doc is for manpages which is why we don't link it to a "doc"
	# USE flag. We always want man pages.
	local myeconfargs=(
		--localstatedir="${LXC_STATEDIR_PATH}"
		--bindir=/usr/bin
		--sbindir=/usr/bin
		--with-config-path="${LXC_CONFIG_PATH}"
		--with-rootfs-path="${LXC_CONFIG_PATH}"/rootfs
		--with-distro=gentoo
		--with-runtime-path=/run
		--disable-apparmor
		--disable-werror
		$(use_enable doc)
		$(use_enable apparmor)
		$(use_enable examples)
		$(use_enable pam)
		$(use_with pam pamdir $(getpam_mod_dir))
		$(use_enable seccomp)
		$(use_enable selinux)
	)
	econf "${myeconfargs[@]}"
}

src_install() {
	default

	mv "${ED}"/usr/share/bash-completion/completions/${PN} "${ED}"/$(get_bashcompdir)/${PN}-start || die
	bashcomp_alias ${PN}-start \
		${PN}-{attach,cgroup,copy,console,create,destroy,device,execute,freeze,info,monitor,snapshot,stop,unfreeze,wait}

	keepdir /etc/lxc "${LXC_CONFIG_PATH}"/rootfs /var/log/lxc
	rmdir "${D}"/"${LXC_STATEDIR_PATH}"/cache/lxc "${D}"/"${LXC_STATEDIR_PATH}"/cache || die "rmdir failed"

	find "${D}" -name '*.la' -delete

	# Gentoo-specific additions!
	newinitd "${FILESDIR}/${PN}.initd.7" ${PN}

	# Remember to compare our systemd unit file with the upstream one
	# config/init/systemd/lxc.service.in
	systemd_newunit "${FILESDIR}"/${PN}_at.service.4 "lxc@.service"

	DOC_CONTENTS="
	For openrc, there is an init script provided with the package.
	You _should_ only need to symlink /etc/init.d/lxc to
	/etc/init.d/lxc.configname to start the container defined in
	/etc/lxc/configname.conf.

	Correspondingly, for systemd a service file lxc@.service is installed.
	Enable and start lxc@configname in order to start the container defined
	in /etc/lxc/configname.conf.

	If you want checkpoint/restore functionality, please install criu
	(sys-process/criu)."
	DISABLE_AUTOFORMATTING=true
	readme.gentoo_create_doc
}

pkg_postinst() {
	readme.gentoo_print_elog
}