# Distributed under the terms of the GNU General Public License v2

EAPI="1"

inherit eutils flag-o-matic multilib toolchain-funcs linux-info
DESCRIPTION="Linux dynamic and persistent device naming support (aka userspace devfs)"
HOMEPAGE="http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev.html"
#PATCHSET="${P}-gentoo-patchset-v1"
SRC_URI="mirror://kernel/linux/utils/kernel/hotplug/${P}.tar.bz2"

if [ -n "$PATCHSET" ]
then
	SRC_URI="$SRC_URI mirror://gentoo/${PATCHSET}.tar.bz2"
fi

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~*"
IUSE="selinux extras +hwdb +gudev introspection"
MIN_KERNEL="2.6.32"

COMMON_DEPEND="selinux? ( sys-libs/libselinux )
		sys-apps/acl
		virtual/libusb:0
		extras? ( dev-libs/gobject-introspection
				  dev-libs/glib:2 )
		gudev? ( dev-libs/glib:2 )
	    introspection? ( dev-libs/gobject-introspection )
		hwdb? ( sys-apps/hwids )
		"
DEPEND="${COMMON_DEPEND} dev-util/gperf >=sys-kernel/linux-headers-2.6.34"
RDEPEND="${COMMON_DEPEND} !sys-apps/coldplug !<sys-fs/lvm2-2.02.45 !sys-fs/device-mapper >=sys-apps/baselayout-2.1.6"
PROVIDE="virtual/dev-manager"

pkg_setup() {
	udev_libexec_dir="/$(get_libdir)/udev"
	[ "$ROOT" != "/" ] && return 0
	local fkv="$(uname -r)"
	local kv="${fkv%-*}"
	local k2="${kv%.*}"
	local kmin="${kv##*.}"
	echo $USE
	if ! use bindist && [ "$k2" == "2.6" ] && [ "$kmin" -lt ${MIN_KERNEL##*.} ] && [ "${FEATURES/safetydance/}" = "${FEATURES}" ]
	then
		eerror
		eerror "Current kernel version: $kv"
		eerror "Minimum kernel version: ${MIN_KERNEL}"
		eerror
		ewarn "You are installing a version of udev that is incompatible with your"
		ewarn "currently-running kernel. This version of udev requires a kernel"
		ewarn "version of ${MIN_KERNEL} or greater. Please use an earlier version of udev"
		ewarn "with your running kernel by masking this version of udev, by adding"
		ewarn "the following line to /etc/portage/package.mask:"
		ewarn
		ewarn ">=sys-fs/udev-160"
		ewarn
		ewarn "Alternatively, you may choose to upgrade to a compatible kernel, update"
		ewarn "your boot loader and reboot your system so that the new kernel is"
		ewarn "active. Then this version of udev will be compatible with your kernel"
		ewarn "and the udev merge will then proceed without warning."
		ewarn
		ewarn "If you know what you are doing and want to override this safety check,"
		ewarn "add 'safetydance' to FEATURES as follows:"
		ewarn
		ewarn "FEATURES=\"safetydance\" emerge <emerge arguments here>"
		ewarn
		ewarn "This will cause this runtime safety check to be skipped."
		die
	fi
	return 0
}

src_unpack() {
	unpack ${A}

	cd "${S}"
	if [ -n "$PATCHSET" ]
	then
		EPATCH_SOURCE="${WORKDIR}/${PATCHSET}" EPATCH_SUFFIX="patch" EPATCH_FORCE="yes" epatch
	fi

	# change rules back to group uucp instead of dialout for now - eventually
	# fix baselayout -

	sed -e 's/GROUP="dialout"/GROUP="uucp"/' -i rules/{rules.d,arch}/*.rules || die "failed to change group dialout to uucp"
}

use_extras() { use extras && echo "--enable-${2:-$1}" || use_enable "$@" ; }
src_compile() {
	filter-flags -fprefetch-loop-arrays

	# sys-fs/lvm2 may require static libs - generate them just to be on the safe
	# side. shared libs get generated too.

	echo $(use_extras introspection)

	econf \
		--prefix=/usr \
		--sysconfdir=/etc \
		--enable-static \
		--sbindir=/sbin \
		--libdir=/usr/$(get_libdir) \
		--with-rootlibdir=/$(get_libdir) \
		--libexecdir="${udev_libexec_dir}" \
		--enable-logging \
		--enable-hwdb \
		--with-pci-ids-path="${EPREFIX}/usr/share/misc/pci.ids" \
		--with-usb-ids-path="${EPREFIX}/usr/share/misc/usb.ids" \
		$(use_extras introspection) \
		$(use_extras gudev) \
		$(use_enable extras) \
		$(use_with selinux)

	emake || die "compiling udev failed"
}

src_install() {
	into /
	emake DESTDIR="${D}" install || die "make install failed"

	exeinto "${udev_libexec_dir}"
	local x
	for x in net.sh move_tmp_persistent_rules.sh write_root_link_rule shell-compat.sh shell-compat-addon.sh
	do
		doexe "${FILESDIR}/${PVR}/${x}" || die "${x} not installed properly"
	done

	keepdir "${udev_libexec_dir}"/state
	keepdir "${udev_libexec_dir}"/devices

	# Use Funtoo's "realdev" command to create initial set of device nodes in
	# /lib/udev/devices. This set of device nodes will be copied to /dev when
	# udev starts.

	$ROOT/sbin/realdev ${D}${udev_libexec_dir}/devices || die

	# create symlinks for these utilities to /sbin
	# where multipath-tools expect them to be (Bug #168588)
	dosym "..${udev_libexec_dir}/vol_id" /sbin/vol_id
	dosym "..${udev_libexec_dir}/scsi_id" /sbin/scsi_id

	# Add gentoo stuff to udev.conf
	echo "# If you need to change mount-options, do it in /etc/fstab" >> "${D}"/etc/udev/udev.conf

	# let the dir exist at least
	keepdir /etc/udev/rules.d

	# Now installing rules
	cd "${S}"/rules
	insinto "${udev_libexec_dir}"/rules.d/

	# Adding arch specific rules
	if [[ -f packages/40-${ARCH}.rules ]]
	then
		doins "packages/40-${ARCH}.rules"
	fi
	cd "${S}"

	# The udev-post init-script
	local x
	for x in udevd udev-save udev-mount udev-postmount
	do
		newinitd "${FILESDIR}"/${PVR}/${x}.initd ${x} || die "initscript $x install error"
	done

	newconfd "${FILESDIR}/${PVR}/udev.confd" udev || die "udev.confd install error"

	insinto /etc/modprobe.d
	newins "${FILESDIR}/${PVR}/blacklist" blacklist.conf
	newins "${FILESDIR}/${PVR}/pnp-aliases" pnp-aliases.conf

	# keep doc in just one directory, Bug #281137
	rm -rf "${D}/usr/share/doc/${PN}"
	if use extras; then
		dodoc extras/keymap/README.keymap.txt || die "failed installing docs"
	fi

	echo "CONFIG_PROTECT_MASK=\"/etc/udev/rules.d\"" > 20udev
	doenvd 20udev
}

modfix() {
	local mod

	# We want to move any old modprobe.d conf files to the new file name so
	# config file protection works correctly.

	for mod in blacklist pnp-aliases 
	do
		if [ -e $ROOT/etc/modprobe.d/$mod ] 
		then
			mv $ROOT/etc/modprobe.d/$mod $ROOT/etc/modprobe.d/${mod}.conf || die "mv failed"
		fi
	done
}

pkg_preinst() {
	modfix

	if [[ -d ${ROOT}/lib/udev-state ]]
	then
		mv -f "${ROOT}"/lib/udev-state/* "${D}"/lib/udev/state/
		rm -r "${ROOT}"/lib/udev-state
	fi

	if [[ -f ${ROOT}/etc/udev/udev.config &&
	     ! -f ${ROOT}/etc/udev/udev.rules ]]
	then
		mv -f "${ROOT}"/etc/udev/udev.config "${ROOT}"/etc/udev/udev.rules
	fi

	rm -f /etc/conf.d/udev #FORCE UPDATE
}

# from the openrc-0.3.0.22081113 ebuild :)
add_init() {
	local runl=$1
	if [ ! -e ${ROOT}/etc/runlevels/${runl} ]
	then
		install -d -m0755 ${ROOT}/etc/runlevels/${runl}
	fi
	for initd in $*
	do
		# if the initscript is not going to be installed and  is not currently installed, return
		[[ -e ${D}/etc/init.d/${initd} || -e ${ROOT}/etc/init.d/${initd} ]] || continue
		[[ -e ${ROOT}/etc/runlevels/${runl}/${initd} ]] && continue
		elog "Auto-adding '${initd}' service to your ${runl} runlevel"
		ln -snf /etc/init.d/${initd} "${ROOT}"/etc/runlevels/${runl}/${initd}
	done
}

pkg_postinst() {
	# disable coldplug script
	rm -f $ROOT/etc/runlevels/*/coldplug

	# disable any old udev script
	rm -f $ROOT/etc/runlevels/*/udev

	rm -f $ROOT/etc/runlevels/*/udev-postmount

	add_init sysinit udev-mount
	add_init sysinit udevd
	add_init boot udev-postmount
	add_init shutdown udev-save

	# requested in Bug #225033:
	elog
	elog "persistent-net does assigning fixed names to network devices."
	elog "If you prefer to disable persistent-net, this can be done via"
	elog "/etc/conf.d/udev."

	ewarn
	ewarn "mount options for directory /dev are no longer"
	ewarn "set in /etc/udev/udev.conf, but in /etc/fstab"
	ewarn "as for other directories."

	elog
	elog "For more information on udev on Gentoo, writing udev rules, and"
	elog "         fixing known issues visit:"
	elog "         http://www.gentoo.org/doc/en/udev-guide.xml"
}