diff options
Diffstat (limited to 'eclass/linux-info.eclass')
| -rw-r--r-- | eclass/linux-info.eclass | 430 |
1 files changed, 351 insertions, 79 deletions
diff --git a/eclass/linux-info.eclass b/eclass/linux-info.eclass index 5d2beacaf5c1..fd8c94759231 100644 --- a/eclass/linux-info.eclass +++ b/eclass/linux-info.eclass @@ -1,19 +1,94 @@ # Copyright 1999-2004 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 -# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.1 2004/11/24 16:36:38 johnm Exp $ +# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.1.1.1 2005/11/30 09:59:20 chriswhite Exp $ # -# This eclass provides functions for querying the installed kernel -# source version, selected kernel options etc. +# Description: This eclass is used as a central eclass for accessing kernel +# related information for sources already installed. +# It is vital for linux-mod to function correctly, and is split +# out so that any ebuild behaviour "templates" are abstracted out +# using additional eclasses. # +# Maintainer: John Mylchreest <johnm@gentoo.org> +# Copyright 2004 Gentoo Linux +# +# Please direct your bugs to the current eclass maintainer :) + +# A Couple of env vars are available to effect usage of this eclass +# These are as follows: +# +# Env Var Option Description +# KERNEL_DIR <string> The directory containing kernel the target kernel +# sources. +# CONFIG_CHECK <string> a list of .config options to check for before +# proceeding with the install. ie: CONFIG_CHECK="MTRR" +# You can also check that an option doesn't exist by +# prepending it with an exclamation mark (!). +# ie: CONFIG_CHECK="!MTRR" +# ERROR_CFG <string> The error message to display when the above check +# fails. <CFG> should reference the appropriate option +# as above. ie: ERROR_MTRR="MTRR exists in the .config +# but shouldn't!!" +# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from +# the kernel makefile. This contains the directory +# which is to be used as the kernel object directory. + +# There are also a couple of variables which are set by this, and shouldn't be +# set by hand. These are as follows: +# +# Env Var Option Description +# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 +# KV_MAJOR <integer> The kernel major version. ie: 2 +# KV_MINOR <integer> The kernel minor version. ie: 6 +# KV_PATCH <integer> The kernel patch version. ie: 9 +# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo +# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm +# KV_DIR <string> The kernel source directory, will be null if +# KERNEL_DIR is invalid. +# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless +# koutput is used. This should be used for referencing +# .config. + +# And to ensure all the weirdness with crosscompile +inherit toolchain-funcs versionator -ECLASS=linux-info -INHERITED="$INHERITED $ECLASS" +EXPORT_FUNCTIONS pkg_setup # Overwritable environment Var's # --------------------------------------- -KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" +KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" +# Bug fixes +# fix to bug #75034 +case ${ARCH} in + ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; + ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; +esac + +# These are legacy wrappers for toolchain-funcs. +# I dont like them here, but oh well. +set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } +set_arch_to_portage() { export ARCH="$(tc-arch)"; } + +# qeinfo "Message" +# ------------------- +# qeinfo is a quiet einfo call when EBUILD_PHASE +# should not have visible output. +qout() { + local outputmsg type + type=${1} + shift + outputmsg="${@}" + case "${EBUILD_PHASE}" in + depend) unset outputmsg;; + clean) unset outputmsg;; + preinst) unset outputmsg;; + esac + [ -n "${outputmsg}" ] && ${type} "${outputmsg}" +} + +qeinfo() { qout einfo "${@}" ; } +qeerror() { qout eerror "${@}" ; } # File Functions # --------------------------------------- @@ -22,40 +97,54 @@ KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" # getfilevar <VARIABLE> <CONFIGFILE> getfilevar() { -local ERROR +local ERROR workingdir basefname basedname myARCH="${ARCH}" ERROR=0 - + [ -z "${1}" ] && ERROR=1 - [ -z "${2}" ] && ERROR=1 [ ! -f "${2}" ] && ERROR=1 if [ "${ERROR}" = 1 ] then + echo -e "\n" eerror "getfilevar requires 2 variables, with the second a valid file." eerror " getfilevar <VARIABLE> <CONFIGFILE>" else - grep -e "^$1" $2 | sed 's: = :=:' | cut -d= -f2- + workingdir=${PWD} + basefname=$(basename ${2}) + basedname=$(dirname ${2}) + unset ARCH + + cd ${basedname} + echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ + make ${BUILD_FIXES} -s -f - e 2>/dev/null + cd ${workingdir} + + ARCH=${myARCH} fi } -getfilevar_isset() { +linux_chkconfig_present() { local RESULT - RESULT="$(getfilevar ${1} ${2})" + RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 } -getfilevar_ismodule() { +linux_chkconfig_module() { local RESULT - RESULT="$(getfilevar ${1} ${2})" + RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" [ "${RESULT}" = "m" ] && return 0 || return 1 } -getfilevar_isbuiltin() { +linux_chkconfig_builtin() { local RESULT - RESULT="$(getfilevar ${1} ${2})" + RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" [ "${RESULT}" = "y" ] && return 0 || return 1 } +linux_chkconfig_string() { + getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" +} + # Versioning Functions # --------------------------------------- @@ -73,54 +162,101 @@ local RESULT kernel_is() { # if we haven't determined the version yet, we need too. get_version; - - local RESULT - RESULT=1 - - if [ -n "${1}" ] - then - [ "${1}" = "${KV_MAJOR}" ] && RESULT=0 - fi - - if [ -n "${2}" ] - then - RESULT=1 - [ "${2}" = "${KV_MINOR}" ] && RESULT=0 - fi - - if [ -n "${3}" ] - then - RESULT=1 - [ "${3}" = "${KV_PATCH}" ] && RESULT=0 - fi - return ${RESULT} + local operator test value x=0 y=0 z=0 + + case ${1} in + lt) operator="-lt"; shift;; + gt) operator="-gt"; shift;; + le) operator="-le"; shift;; + ge) operator="-ge"; shift;; + eq) operator="-eq"; shift;; + *) operator="-eq";; + esac + + for x in ${@}; do + for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done + value="${value}${x}" + z=$((${z} + 1)) + + case ${z} in + 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done; + test="${test}${KV_MAJOR}";; + 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done; + test="${test}${KV_MINOR}";; + 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; + test="${test}${KV_PATCH}";; + *) die "Error in kernel-2_kernel_is(): Too many parameters.";; + esac + done + + [ ${test} ${operator} ${value} ] && return 0 || return 1 +} + +get_localversion() { + local lv_list i x + + # ignore files with ~ in it. + for i in $(ls ${1}/localversion* 2>/dev/null); do + [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}" + done + + for i in ${lv_list}; do + x="${x}$(<${i})" + done + x=${x/ /} + echo ${x} } get_version() { + local kbuild_output + # no need to execute this twice assuming KV_FULL is populated. # we can force by unsetting KV_FULL - if [ -n "${KV_FULL}" ] - then - # Lets keep this quiet eh? - # einfo "\${KV_FULL} is already set. Not running get_version again" - return - fi + [ -n "${KV_FULL}" ] && return 0 # if we dont know KV_FULL, then we need too. # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR unset KV_DIR # KV_DIR will contain the full path to the sources directory we should use - einfo "Determining the location of the kernel source code" + qeinfo "Determining the location of the kernel source code" [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" - + if [ -z "${KV_DIR}" ] then - eerror "Unable to find kernel sources at ${KERNEL_DIR}" - die + qeerror "Unable to find kernel sources at ${KERNEL_DIR}" + qeinfo "This package requires Linux sources." + if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then + qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " + qeinfo "(or the kernel you wish to build against)." + qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" + else + qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." + fi + return 1 + fi + + qeinfo "Found kernel source directory:" + qeinfo " ${KV_DIR}" + + if [ ! -s "${KV_DIR}/Makefile" ] + then + qeerror "Could not find a Makefile in the kernel source directory." + qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" + return 1 fi - + + # OK so now we know our sources directory, but they might be using + # KBUILD_OUTPUT, and we need this for .config and localversions-* + # so we better find it eh? + # do we pass KBUILD_OUTPUT on the CLI? + OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" + + # And if we didn't pass it, we can take a nosey in the Makefile + kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" + OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" + # And contrary to existing functions I feel we shouldn't trust the # directory name to find version information as this seems insane. # so we parse ${KV_DIR}/Makefile @@ -128,26 +264,78 @@ get_version() { KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" + + if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] + then + qeerror "Could not detect kernel version." + qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." + return 1 + fi + # and in newer versions we can also pull LOCALVERSION if it is set. - KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" - + # but before we do this, we need to find if we use a different object directory. + # This *WILL* break if the user is using localversions, but we assume it was + # caught before this if they are. + [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ + OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" + + [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" + [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" + if [ -n "${KV_OUT_DIR}" ]; + then + qeinfo "Found kernel object directory:" + qeinfo " ${KV_OUT_DIR}" + + KV_LOCAL="$(get_localversion ${KV_OUT_DIR})" + fi + # and if we STILL haven't got it, then we better just set it to KV_DIR + KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" + + KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_OUT_DIR})" + KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" + KV_LOCAL="${KV_LOCAL//\"/}" + # And we should set KV_FULL to the full expanded version KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" - - if [ -z "${KV_FULL}" ] + + qeinfo "Found sources for kernel version:" + qeinfo " ${KV_FULL}" + + if [ ! -s "${KV_OUT_DIR}/.config" ] then - eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" - eerror "Please check a kernel source exists in this directory." - die - else - einfo "Found kernel source directory:" - einfo " ${KV_DIR}" - einfo "with sources for kernel version:" - einfo " ${KV_FULL}" + qeerror "Could not find a usable .config in the kernel source directory." + qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources." + qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that" + qeerror "it points to the necessary object directory so that it might find .config." + return 1 fi + + return 0 } +get_running_version() { + KV_FULL=$(uname -r) + if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then + KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) + unset KV_FULL + get_version + return $? + elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then + KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) + unset KV_FULL + get_version + return $? + else + KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) + KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) + KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) + KV_PATCH=${KV_PATCH//-*} + [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ + && KV_EXTRA="-${KV_FULL#*-}" + fi + return 0 +} # ebuild check functions @@ -156,16 +344,16 @@ get_version() { check_kernel_built() { # if we haven't determined the version yet, we need too. get_version; - - if [ ! -f "${KV_DIR}/System.map" ] + + if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] then - eerror "These sources have not yet been compiled." - eerror "We cannot build against an uncompiled tree." + eerror "These sources have not yet been prepared." + eerror "We cannot build against an unprepared tree." eerror "To resolve this, please type the following:" eerror eerror "# cd ${KV_DIR}" eerror "# make oldconfig" - eerror "# make bzImage modules modules_install" + eerror "# make modules_prepare" eerror eerror "Then please try merging this module again." die "Kernel sources need compiling first" @@ -175,20 +363,96 @@ check_kernel_built() { check_modules_supported() { # if we haven't determined the version yet, we need too. get_version; - - getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config - if [ "$?" != 0 ] + + if ! linux_chkconfig_builtin "MODULES" then eerror "These sources do not support loading external modules." eerror "to be able to use this module please enable \"Loadable modules support\"" eerror "in your kernel, recompile and then try merging this module again." + die "No support for external modules in ${KV_FULL} config" + fi +} + +check_extra_config() { + local config negate error local_error i n + local temp_config die reworkmodulenames + + # if we haven't determined the version yet, we need too. + get_version; + + einfo "Checking for suitable kernel configuration options:" + for config in ${CONFIG_CHECK} + do + # if we specify any fatal, ensure we honor them + die=1 + error=0 + negate=0 + reworkmodulenames=0 + + if [[ -z ${config//\!*} ]]; then + negate=1 + config=${config:1} + fi + if [[ -z ${config/\@*} ]]; then + die=2 + reworkmodulenames=1 + config=${config:1} + fi + if [[ -z ${config/\~*} ]]; then + die=0 + config=${config:1} + fi + + if [[ ${negate} == 1 ]]; then + linux_chkconfig_present ${config} && error=2 + elif [[ ${reworkmodulenames} == 1 ]]; then + temp_config="${config//*:}" + config="${config//:*}" + if linux_chkconfig_present ${config}; then + for i in ${MODULE_NAMES}; do + n="${i//${temp_config}}" + [[ -z ${n//(*} ]] && \ + MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}" + done + error=2 + fi + else + linux_chkconfig_present ${config} || error=1 + fi + + if [[ ${die} == 0 ]]; then + ebegin "CONFIG_${config}" + eend ${error} + else + if [[ ${error} > 0 ]]; then + local_error="${config}_ERROR" + local_error="${!local_error}" + if [[ -z "${local_error}" ]]; then + [[ ${error} == 1 ]] \ + && local_error="is not set when it should be." \ + || local_error="should not be set. But it is." + local_error="CONFIG_${config}:\t ${local_error}" + fi + eerror " ${local_error}" + fi + fi + done + + if [[ ${error} > 0 ]]; then + eerror "Please check to make sure these options are set correctly." + eerror "Failure to do so may cause unexpected problems." + if [[ ${die} == 1 ]]; then + eerror "Once you have satisfied these options, please try merging" + eerror "this package again." + die "Incorrect kernel configuration options" + fi fi } check_zlibinflate() { # if we haven't determined the version yet, we need too. get_version; - + # although I restructured this code - I really really really dont support it! # bug #27882 - zlib routines are only linked into the kernel @@ -197,33 +461,32 @@ check_zlibinflate() { # plus, for the cloop module, it appears that there's no way # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS # is on - -local INFLATE -local DEFLATE + + local INFLATE + local DEFLATE einfo "Determining the usability of ZLIB_INFLATE support in your kernel" - + ebegin "checking ZLIB_INFLATE" getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config eend $? [ "$?" != 0 ] && die - + ebegin "checking ZLIB_DEFLATE" getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config eend $? [ "$?" != 0 ] && die - - + local LINENO_START local LINENO_END local SYMBOLS local x - + LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) (( LINENO_END = $LINENO_END - 1 )) - SYMBOLS="$(head -n $LINENO_END ${KERNEL_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" + SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" # okay, now we have a list of symbols # we need to check each one in turn, to see whether it is set or not @@ -234,7 +497,7 @@ local DEFLATE return 0 fi done - + eerror eerror "This kernel module requires ZLIB library support." eerror "You have enabled zlib support in your kernel, but haven't enabled" @@ -254,3 +517,12 @@ local DEFLATE die "Kernel doesn't include zlib support" } + +################################ +# Default pkg_setup +# Also used when inheriting linux-mod to force a get_version call + +linux-info_pkg_setup() { + get_version || die "Unable to calculate Linux Kernel version" + [ -n "${CONFIG_CHECK}" ] && check_extra_config; +} |