Initial commit of new kernel eclass

1 files changed, 417 insertions, 0 deletions

diff --git a/eclass/kernel-2.eclass b/eclass/kernel-2.eclass
new file mode 100644
index 000000000000..d04c04cb4730
--- /dev/null
+++ b/eclass/kernel-2.eclass
@@ -0,0 +1,417 @@
+# kernel.eclass rewrite for a clean base regarding the 2.6 series of kernel
+# with back-compatibility for 2.4
+
+# added functionality:
+# unipatch		- a flexible, singular method to extract, add and remove patches.
+
+# A Couple of env vars are available to effect usage of this eclass
+# These are as follows:
+#
+# K_NOSETEXTRAVERSION	- if this is set then EXTRAVERSION will not be automatically set within the kernel Makefile
+# K_NOUSENAME		- if this is set then EXTRAVERSION will not include the first part of ${PN} in EXTRAVERSION
+# UNIPATCH_LIST		- space delimetered list of patches to be applied to the kernel
+# UNIPATCH_DOCS		- space delimemeted list of docs to be installed to the doc dir
+
+ECLASS="kernel-2"
+EXPORT_FUNCTIONS src_unpack src_compile src_install pkg_preinst pkg_postinst
+
+HOMEPAGE="http://www.kernel.org/ http://www.gentoo.org/" 
+LICENSE="GPL-2"
+IUSE="${IUSE} build"
+SLOT="${KV}"
+
+# capture the sources type and set depends
+if [ "${ETYPE}" == "sources" ]
+then
+	#console-tools is needed to solve the loadkeys fiasco; binutils version needed to avoid Athlon/PIII/SSE assembler bugs.
+	DEPEND="!build? ( sys-apps/sed
+		>=sys-devel/binutils-2.11.90.0.31 )"
+
+	RDEPEND="${DEPEND}
+		 !build? ( >=sys-libs/ncurses-5.2
+		dev-lang/perl
+		virtual/modutils
+		sys-devel/make )"
+ 
+	PROVIDE="virtual/linux-sources virtual/alsa"
+
+elif [ "${ETYPE}" == "headers" ]
+then
+	PROVIDE="virtual/kernel virtual/os-headers"
+else
+	eerror "Unknown ETYPE=\"${ETYPE}\", must be either \"sources\" or \"headers\""
+	die
+fi
+
+# Grab kernel version from KV
+KV_MAJOR=$(echo ${KV} | cut -d. -f1)
+KV_MINOR=$(echo ${KV} | cut -d. -f2)
+KV_PATCH=$(echo ${KV} | cut -d. -f3)
+KV_PATCH=${KV_PATCH/[-_]*/}
+
+# set LINUX_HOSTCFLAGS if not already set
+[ -z "$LINUX_HOSTCFLAGS" ] && LINUX_HOSTCFLAGS="-Wall -Wstrict-prototypes -Os -fomit-frame-pointer -I${S}/include"
+
+
+#eclass functions only from here onwards.
+#==============================================================
+kernel_is_2_4() {
+	[ ${KV_MAJOR} -eq 2 -a ${KV_MINOR} -eq 4 ] && return 0 || return 1
+}
+
+kernel_is_2_6() {
+	[ ${KV_MAJOR} -eq 2 -a ${KV_MINOR} -eq 5 -o ${KV_MINOR} -eq 6 ] && return 0 || return 1
+}
+
+
+# Unpack functions
+#==============================================================
+unpack_2_4() {
+	cd ${S}
+	# this file is required for other things to build properly, 
+	# so we autogenerate it
+	make mrproper || die "make mrproper died"
+	make include/linux/version.h || die "make include/linux/version.h failed"
+	echo ">>> version.h compiled successfully."
+}
+
+universal_unpack() {
+	# remove all backup files
+	find . -iname "*~" -exec rm {} \; 2> /dev/null
+
+	if [ -d "${S}/Documentation/DocBook" ]
+	then
+		cd ${S}/Documentation/DocBook
+		sed -e "s:db2:docbook2:g" Makefile > Makefile.new \
+			&& mv Makefile.new Makefile
+		cd ${S}
+	fi
+}
+
+unpack_set_extraversion() {
+	# Gentoo Linux uses /boot, so fix 'make install' to work properly and fix EXTRAVERSION
+	cd ${S}
+	mv Makefile Makefile.orig
+	sed	-e 's:#export\tINSTALL_PATH:export\tINSTALL_PATH:' \
+		-e "s:^\(EXTRAVERSION =\).*:\1 ${EXTRAVERSION}:" \
+		Makefile.orig > Makefile
+	rm Makefile.orig
+}
+
+# Compile Functions
+#==============================================================
+compile_headers() {
+	local MY_ARCH
+	
+	MY_ARCH=${ARCH}
+	unset ${ARCH}
+	yes "" | make oldconfig
+	echo ">>> make oldconfig complete"
+	ARCH=${MY_ARCH}	
+}
+
+# install functions
+#==============================================================
+install_universal() {
+	#fix silly permissions in tarball
+	cd ${WORKDIR}
+	chown -R root:root *
+	chmod -R a+r-w+X,u+w *
+}
+
+install_headers() {
+	[ $(kernel_is_2_4) $? == 0 ] && unpack_2_4
+
+	cd ${S}
+	dodir /usr/include/linux
+	cp -ax ${S}/include/linux/* ${D}/usr/include/linux
+	rm -rf ${D}/usr/include/linux/modules
+	dodir /usr/include/asm
+	cp -ax ${S}/include/asm/* ${D}/usr/include/asm
+}
+
+install_sources() {
+		local doc
+		local docs
+
+		cd ${S}
+		dodir /usr/src
+		echo ">>> Copying sources..."
+		if [ -d "${WORKDIR}/${KV}/docs/" ]
+		then
+			for file in $(ls -1 ${WORKDIR}/${KV}/docs/)
+			do
+				echo "XX_${file}*" >> ${S}/patches.txt
+				cat ${WORKDIR}/${KV}/docs/${file} >> ${S}/patches.txt
+				echo "" >> ${S}/patches.txt
+			done
+		fi
+		
+		if [ ! -f ${S}/patches.txt ]
+		then
+			# patches.txt is empty so lets use our ChangeLog
+			[ -f ${FILESDIR}/../ChangeLog ] && echo "Please check the ebuild ChangeLog for more details." > ${S}/patches.txt
+		fi
+
+		for doc in ${UNIPATCH_DOCS}
+		do
+			[ -f ${doc} ] && docs="${docs} ${doc}"
+		done
+
+		if [ -f ${S}/patches.txt ]; then
+			docs="${docs} ${S}/patches.txt"
+		fi
+		dodoc ${docs}
+		mv ${WORKDIR}/linux* ${D}/usr/src
+}
+
+# pkg_preinst functions
+#==============================================================
+preinst_headers() {
+		[ -L ${ROOT}usr/include/linux ] && rm ${ROOT}usr/include/linux
+		[ -L ${ROOT}usr/include/asm ] && rm ${ROOT}usr/include/asm
+}
+
+# pkg_postinst functions
+#==============================================================
+postinst_sources() {
+	if [ ! -h ${ROOT}usr/src/linux ]
+	then
+		ln -sf ${ROOT}usr/src/linux-${KV} ${ROOT}usr/src/linux
+	fi
+
+	# Don't forget to make directory for sysfs
+	[ ! -d "${ROOT}/sys" -a $(kernel_is_2_6) $? == 0 ] && mkdir /sys
+
+	echo
+	einfo "After installing a new kernel of any version, it is important"
+	einfo "that you have the appropriate /etc/modules.autoload.d/kernel-X.Y"
+	einfo "created (X.Y is the first 2 parts of your new kernel version)"
+	echo
+	einfo "For example, this kernel will require:"
+	einfo "/etc/modules.autoload.d/kernel-${KV_MAJOR}.${KV_MINOR}"
+	echo
+}
+
+# unipatch
+#==============================================================
+unipatch() {
+	local i
+	local x
+	local extention
+	local PIPE_CMD
+	local UNIPATCH_EXCLUDE
+	local KPATCH_DIR
+	local PATCH_DEPTH
+
+	[ -z "${KPATCH_DIR}" ] && KPATCH_DIR="${WORKDIR}/patches/"
+	[ ! -d ${KPATCH_DIR} ] && mkdir -p ${KPATCH_DIR}
+
+	# This function will unpack all passed tarballs, add any passed patches, and remove any passed patchnumbers
+	# usage can be either via an env var or by params
+	[ -z "${UNIPATCH_LIST}" ] && UNIPATCH_LIST="${@}"
+
+	#unpack any passed tarballs
+	for i in ${UNIPATCH_LIST}
+	do
+		if [ -n "$(echo ${i} | grep -e ".tar" -e ".tbz" -e ".tgz")" ]
+		then
+			extention=${i/*./}
+			case ${extention} in
+				tbz2) PIPE_CMD="tar -xvjf";;
+				 bz2) PIPE_CMD="tar -xvjf";;
+				 tgz) PIPE_CMD="tar -xvzf";;
+				  gz) PIPE_CMD="tar -xvzf";;
+				   *) eerror "Unrecognized tarball compression"
+				      die "Unrecognized tarball compression";;
+			esac
+
+			${PIPE_CMD} ${i} -C ${KPATCH_DIR} 1>/dev/null
+			if [ $? == 0 ]
+			then
+				einfo "${i/*\//} unpacked"
+			else
+				eerror "Failed to unpack ${i}"
+				die "unable to unpack patch tarball"
+			fi
+
+			UNIPATCH_LIST="${UNIPATCH_LIST/${i}/}"
+		fi
+	done
+
+	#so now everything is unpacked, lets work out whats to be dropped and whats to be included.
+	for i in ${UNIPATCH_LIST}
+	do
+		extention=${i/*./}
+		PIPE_CMD=""
+		case ${extention} in
+			    bz2) PIPE_CMD="bzip2 -dc";;
+			  patch) PIPE_CMD="cat";;
+			 gz|Z|z) PIPE_CMD="gzip -dc";;
+			ZIP|zip) PIPE_CMD="unzip -p";;
+			      *) UNIPATCH_EXCLUDE="${UNIPATCH_EXCLUDE} ${i}";;
+		esac
+		[ -n "${PIPE_CMD}" ] && ${PIPE_CMD} ${i} > ${KPATCH_DIR}/${i/*\//}.patch
+	done
+
+	#populate KPATCH_DIRS so we know where to look to remove the excludes
+	x=${KPATCH_DIR}
+	KPATCH_DIR=""
+	for i in $(find ${x} -type d)
+	do
+		KPATCH_DIR="${KPATCH_DIR} ${i}"
+	done
+
+	#so now lets get rid of the patchno's we want to exclude
+	for i in ${UNIPATCH_EXCLUDE}
+	do
+		for x in ${KPATCH_DIR}
+		do
+			rm ${x}/${i}_* 2>/dev/null
+			if [ $? == 0 ]
+			then
+				einfo "Excluding Patch #${i}"
+				einfo "From: ${x/${WORKDIR}/}"
+			fi
+		done
+	done
+
+	# and now, finally, we patch it :)
+	for x in ${KPATCH_DIR}
+	do
+		for i in $(find ${x} -maxdepth 1 -iname "*.patch" | sort -u)
+		do
+
+
+			PATCH_DEPTH=0
+			ebegin "Applying ${i/*\//}"
+			while [ ${PATCH_DEPTH} -lt 5 ]
+			do
+				if (patch -p${PATCH_DEPTH} --dry-run -f < ${i} >/dev/null)
+				then
+					$(patch -p${PATCH_DEPTH} -f < ${i} >/dev/null)
+					if [ "$?" -eq 0 ]
+					then
+						eend 0
+						break
+					else
+						eend 1
+						eerror "Failed to apply patch ${i/*\//}"
+						die "Failed to apply ${i/*\//}"
+					fi
+				else
+					PATCH_DEPTH=$((${PATCH_DEPTH} + 1))
+				fi
+			done
+			if [ ${PATCH_DEPTH} -eq 5 ]
+			then
+				eend 1
+				die "Unable to dry-run patch."
+			fi
+
+
+		done
+	done
+}
+
+# custom functions
+#==============================================================
+detect_version() {
+	# this function will detect and set
+	# - OKV: Original Kernel Version (2.6.0/2.6.0-test11)
+	# - KV: Kernel Version (2.6.0-gentoo/2.6.0-test11-gentoo-r1)
+	# - EXTRAVERSION: The additional version appended to OKV (-gentoo/-gentoo-r1)
+	
+	OKV=${PV/_beta/-test}
+	OKV=${OKV/_rc/-rc}
+	OKV=${OKV/_pre*/}
+	OKV=${OKV/-r*/}
+	
+	KV_MAJOR=$(echo ${OKV} | cut -d. -f1)
+	KV_MINOR=$(echo ${OKV} | cut -d. -f2)
+	KV_PATCH=$(echo ${OKV} | cut -d. -f3)
+	KV_PATCH=${KV_PATCH/[-_]*/}	
+	
+	KERNEL_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.bz2"
+	
+	RELEASE=${PV/${OKV}/}
+	RELEASE=${RELEASE/_beta/}
+	RELEASE=${RELEASE/_rc/-rc}
+	RELEASE=${RELEASE/_pre/-bk}
+	RELEASETYPE=${RELEASE//[0-9]/}
+	
+	EXTRAVERSION="${RELEASE}"
+	[ -z "${K_NOUSENAME}" ] && EXTRAVERSION="${EXTRAVERSION}-${PN/-*/}"
+	[ ! "${PR}" == "r0" ] && EXTRAVERSION="${EXTRAVERSION}-${PR}"
+	
+	KV=${OKV}${EXTRAVERSION}
+	
+	# -rcXX-bkXX pulls are *IMPOSSIBLE* to support within the portage naming convention
+	# these cannot be supported, but the code here can handle it up until this point
+	# and theoretically thereafter.
+	
+	if [ "${RELEASETYPE}" == "-rc" ]
+	then
+		OKV="${KV_MAJOR}.${KV_MINOR}.$([ $((${KV_PATCH} - 1)) -lt 0 ] && echo ${KV_PATCH} || echo $((${KV_PATCH} - 1)))"
+		KERNEL_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/testing/patch-${PV//_/-}.bz2
+			    mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.bz2"
+		UNIPATCH_LIST="${DISTDIR}/patch-${PV//_/-}.bz2 ${UNIPATCH_LIST}"
+		KV=${PV/[-_]*/}${EXTRAVERSION}
+	fi
+	
+	if [ "${RELEASETYPE}" == "-bk" ]
+	then
+		OKV="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
+		KERNEL_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/snapshots/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.bz2
+			    mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.bz2"
+		UNIPATCH_LIST="${DISTDIR}/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.bz2 ${UNIPATCH_LIST}"
+		KV=${PV/[-_]*/}${EXTRAVERSION}
+	fi
+	
+	if [ "${RELEASETYPE}" == "-rc-bk" ]
+	then
+		OKV="${KV_MAJOR}.${KV_MINOR}.$((${KV_PATCH} - 1))-${RELEASE/-bk*}"
+		EXTRAVERSION="$([ -n "${RELEASE}" ] && echo ${RELEASE/*-bk/-bk})$([ -n "${K_USENAME}" ] && echo -${PN/-*/})$([ ! "${PR}" == "r0" ] && echo -${PR})"
+		
+		KERNEL_URI="mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/snapshots/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.bz2
+			    mirror://kernel/linux/kernel/v${KV_MAJOR}.${KV_MINOR}/linux-${OKV}.tar.bz2"
+		UNIPATCH_LIST="${DISTDIR}/patch-${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${RELEASE}.bz2 ${UNIPATCH_LIST}"
+		KV=${PV/[-_]*/}${EXTRAVERSION}
+	fi
+}
+
+
+# common functions
+#==============================================================
+src_unpack() {
+	[ -z "${OKV}" ] && OKV="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}"
+
+	cd ${WORKDIR}
+	unpack linux-${OKV}.tar.bz2
+	mv linux-${OKV} linux-${KV} || die "Unable to move source tree to ${KV}."
+	cd ${S}
+
+	universal_unpack
+	[ -n "${UNIPATCH_LIST}" ] && unipatch ${UNIPATCH_LIST}
+	[ -z "${K_NOSETEXTRAVERSION}" ] && unpack_set_extraversion
+
+	[ $(kernel_is_2_4) $? == 0 ] && unpack_2_4
+}
+
+src_compile() {
+	[ "${ETYPE}" == "headers" ] && compile_headers
+}
+
+pkg_preinst() {
+	[ "${ETYPE}" == "headers" ] && preinst_headers
+}
+
+src_install() {
+	install_universal
+	[ "${ETYPE}" == "headers" ] && install_headers
+	[ "${ETYPE}" == "sources" ] && install_sources
+}
+
+pkg_postinst() {
+	[ "${ETYPE}" == "sources" ] && postinst_sources
+}