From 4c30eb4d9ed0c675e76ab471587783d654ae0ca3 Mon Sep 17 00:00:00 2001
From: Bertrand Jacquin <bertrand@jacquin.bzh>
Date: Fri, 2 Sep 2016 01:36:17 +0100
Subject: eclass/linux-build: Generate sys-boot/grub:0 config

---
 eclass/linux-build.eclass | 55 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'eclass')

diff --git a/eclass/linux-build.eclass b/eclass/linux-build.eclass
index a2e5dfd1..80a8efe9 100644
--- a/eclass/linux-build.eclass
+++ b/eclass/linux-build.eclass
@@ -134,6 +134,8 @@ linux-build_pkg_setup() {
 }
 
 _linux-build_src_prepare_build() {
+	local i
+
 	mkdir "${BUILDDIR}"
 
 	restore_config "${BUILDDIR}/.config"
@@ -150,6 +152,51 @@ _linux-build_src_prepare_build() {
 		echo "${CONFIG_CMDLINE}" > "${WORKDIR}/boot/kernel.arg"
 	fi
 
+	local -a BOOTLOADERS=(
+		sys-boot/grub:0 /boot/grub/grub.conf
+	)
+
+	for (( i = 0 ; i < ${#BOOTLOADERS[@]} ; i+=2 )) ; do
+		if has_version "${BOOTLOADERS[i]}" && [[ -e "${EPREFIX}/${BOOTLOADERS[i+1]}" ]] ; then
+			BOOTLOADER=Yes
+			BOOTLOADER_DIR="${BOOTLOADERS[i+1]%/*}"
+			BOOTLOADER_FILE="${BOOTLOADERS[i+1]##*/}"
+
+			break
+		fi
+	done
+
+	if [[ "${BOOTLOADER}" == "Yes" ]] ; then
+		KV_INSTALLED="$(best_version ${CATEGORY}/${PN}:${SLOT})"
+		KV_INSTALLED="${KV_INSTALLED/#${CATEGORY}\/${PN}-}"
+
+		if [[ -n "${KV_INSTALLED}" ]] ; then
+			mkdir -p "${WORKDIR}/bootloader/${BOOTLOADER_DIR}"
+
+			# Handle collision protect
+			for (( i = 0 ; i < 9999 ; i++ )) ; do
+				printf -v BOOTLOADER_PROTECTED_FILE "._cfg%04d_${BOOTLOADER_FILE}" "${i}"
+				if [[ ! -e "${EPREFIX}/${BOOTLOADER_DIR}/${BOOTLOADER_PROTECTED_FILE}" ]] ; then
+					break
+				fi
+			done
+
+			einfo "Generating ${BOOTLOADER_DIR}/${BOOTLOADER_FILE}"
+			sed -e "s@${KV_INSTALLED}${KV_EXTRA}@${KV_FULL}@g" \
+				"${EPREFIX}/${BOOTLOADER_DIR}/${BOOTLOADER_FILE}" \
+				> "${WORKDIR}/bootloader/${BOOTLOADER_DIR}/${BOOTLOADER_PROTECTED_FILE}"
+
+			if diff -q \
+				"${EPREFIX}/${BOOTLOADER_DIR}/${BOOTLOADER_FILE}" \
+				"${WORKDIR}/bootloader/${BOOTLOADER_DIR}/${BOOTLOADER_PROTECTED_FILE}" > /dev/null ; then
+
+				rm "${WORKDIR}/bootloader/${BOOTLOADER_DIR}/${BOOTLOADER_PROTECTED_FILE}"
+			fi
+
+			echo "CONFIG_PROTECT=${BOOTLOADER_DIR}/${BOOTLOADER_FILE}" > "${WORKDIR}/env.d_42-${PN}"
+		fi
+	fi
+
 	_linux-build_configval MODULES || ewarn "CONFIG_MODULES is not set"
 	_linux-build_configval UEVENT_HELPER_PATH \
 		&& ewarn "CONFIG_UEVENT_HELPER_PATH should be empty"
@@ -335,6 +382,14 @@ _linux-build_src_install_build() {
 		fperms 0400 "/etc/ssl/private/${PF}.key"
 	fi
 
+	if [[ -d "${WORKDIR}/bootloader/boot" ]] ; then
+		insinto /boot
+		doins -r "${WORKDIR}"/bootloader/boot/*
+
+		insinto /etc/env.d
+		newins "${WORKDIR}/env.d_42-${PN}" "42-${PN}"
+	fi
+
 	use savedconfig && save_config "${BUILDDIR}/.config"
 }
 
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