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# Copyright 1999-2004 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.25 2005/04/24 10:55:04 johnm Exp $ |
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# |
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# Description: This eclass is used as a central eclass for accessing kernel |
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# related information for sources already installed. |
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# It is vital for linux-mod to function correctly, and is split |
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# out so that any ebuild behaviour "templates" are abstracted out |
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# using additional eclasses. |
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# |
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# Maintainer: John Mylchreest <johnm@gentoo.org> |
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# Copyright 2004 Gentoo Linux |
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# |
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# Please direct your bugs to the current eclass maintainer :) |
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|
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# A Couple of env vars are available to effect usage of this eclass |
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# These are as follows: |
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# |
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# Env Var Option Description |
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# KERNEL_DIR <string> The directory containing kernel the target kernel |
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# sources. |
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# CONFIG_CHECK <string> a list of .config options to check for before |
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# proceeding with the install. ie: CONFIG_CHECK="MTRR" |
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# You can also check that an option doesn't exist by |
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# prepending it with an exclamation mark (!). |
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# ie: CONFIG_CHECK="!MTRR" |
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# ERROR_CFG <string> The error message to display when the above check |
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# fails. <CFG> should reference the appropriate option |
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# as above. ie: ERROR_MTRR="MTRR exists in the .config |
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# but shouldn't!!" |
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# KBUILD_OUTPUT <string> This is passed on commandline, or can be set from |
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# the kernel makefile. This contains the directory |
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# which is to be used as the kernel object directory. |
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|
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# There are also a couple of variables which are set by this, and shouldn't be |
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# set by hand. These are as follows: |
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# |
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# Env Var Option Description |
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# KV_FULL <string> The full kernel version. ie: 2.6.9-gentoo-johnm-r1 |
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# KV_MAJOR <integer> The kernel major version. ie: 2 |
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# KV_MINOR <integer> The kernel minor version. ie: 6 |
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# KV_PATCH <integer> The kernel patch version. ie: 9 |
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# KV_EXTRA <string> The kernel EXTRAVERSION. ie: -gentoo |
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# KV_LOCAL <string> The kernel LOCALVERSION concatenation. ie: -johnm |
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# KV_DIR <string> The kernel source directory, will be null if |
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# KERNEL_DIR is invalid. |
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# KV_OUT_DIR <string> The kernel object directory. will be KV_DIR unless |
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# koutput is used. This should be used for referencing |
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# .config. |
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|
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# And to ensure all the weirdness with crosscompile |
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inherit toolchain-funcs versionator |
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|
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ECLASS=linux-info |
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INHERITED="$INHERITED $ECLASS" |
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EXPORT_FUNCTIONS pkg_setup |
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|
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# Overwritable environment Var's |
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# --------------------------------------- |
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KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" |
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|
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|
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# Bug fixes |
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# fix to bug #75034 |
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case ${ARCH} in |
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ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; |
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ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";; |
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esac |
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|
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# These are legacy wrappers for toolchain-funcs. |
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# I dont like them here, but oh well. |
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set_arch_to_kernel() { export ARCH="$(tc-arch-kernel)"; } |
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set_arch_to_portage() { export ARCH="$(tc-arch)"; } |
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|
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# qeinfo "Message" |
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# ------------------- |
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# qeinfo is a quiet einfo call when EBUILD_PHASE |
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# should not have visible output. |
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qout() { |
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local outputmsg type |
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type=${1} |
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shift |
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outputmsg="${@}" |
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case "${EBUILD_PHASE}" in |
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depend) unset outputmsg;; |
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clean) unset outputmsg;; |
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preinst) unset outputmsg;; |
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esac |
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[ -n "${outputmsg}" ] && ${type} "${outputmsg}" |
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} |
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|
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qeinfo() { qout einfo "${@}" ; } |
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qeerror() { qout eerror "${@}" ; } |
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|
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# File Functions |
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# --------------------------------------- |
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|
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# getfilevar accepts 2 vars as follows: |
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# getfilevar <VARIABLE> <CONFIGFILE> |
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|
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getfilevar() { |
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local ERROR workingdir basefname basedname myARCH="${ARCH}" |
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ERROR=0 |
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|
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[ -z "${1}" ] && ERROR=1 |
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[ ! -f "${2}" ] && ERROR=1 |
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|
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if [ "${ERROR}" = 1 ] |
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then |
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echo -e "\n" |
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eerror "getfilevar requires 2 variables, with the second a valid file." |
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eerror " getfilevar <VARIABLE> <CONFIGFILE>" |
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else |
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workingdir=${PWD} |
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basefname=$(basename ${2}) |
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basedname=$(dirname ${2}) |
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unset ARCH |
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|
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cd ${basedname} |
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echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \ |
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make ${BUILD_FIXES} -s -f - e 2>/dev/null |
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cd ${workingdir} |
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|
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ARCH=${myARCH} |
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fi |
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} |
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|
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linux_chkconfig_present() { |
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local RESULT |
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RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" |
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[ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 |
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} |
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|
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linux_chkconfig_module() { |
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local RESULT |
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RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" |
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[ "${RESULT}" = "m" ] && return 0 || return 1 |
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} |
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|
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linux_chkconfig_builtin() { |
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local RESULT |
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RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)" |
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[ "${RESULT}" = "y" ] && return 0 || return 1 |
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} |
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|
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linux_chkconfig_string() { |
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getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config" |
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} |
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|
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# Versioning Functions |
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# --------------------------------------- |
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|
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# kernel_is returns true when the version is the same as the passed version |
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# |
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# For Example where KV = 2.6.9 |
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# kernel_is 2 4 returns false |
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# kernel_is 2 returns true |
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# kernel_is 2 6 returns true |
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# kernel_is 2 6 8 returns false |
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# kernel_is 2 6 9 returns true |
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# |
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# got the jist yet? |
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|
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kernel_is() { |
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# if we haven't determined the version yet, we need too. |
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get_version; |
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local operator test value x=0 y=0 z=0 |
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|
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case ${1} in |
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lt) operator="-lt"; shift;; |
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gt) operator="-gt"; shift;; |
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le) operator="-le"; shift;; |
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ge) operator="-ge"; shift;; |
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eq) operator="-eq"; shift;; |
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*) operator="-eq";; |
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esac |
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|
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for x in ${@}; do |
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for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done |
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value="${value}${x}" |
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z=$((${z} + 1)) |
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|
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case ${z} in |
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1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done; |
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test="${test}${KV_MAJOR}";; |
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2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done; |
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test="${test}${KV_MINOR}";; |
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3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done; |
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test="${test}${KV_PATCH}";; |
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*) die "Error in kernel-2_kernel_is(): Too many parameters.";; |
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esac |
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done |
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|
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[ ${test} ${operator} ${value} ] && return 0 || return 1 |
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} |
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|
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get_version() { |
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local kbuild_output |
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|
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# no need to execute this twice assuming KV_FULL is populated. |
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# we can force by unsetting KV_FULL |
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[ -n "${KV_FULL}" ] && return 0 |
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|
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# if we dont know KV_FULL, then we need too. |
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# make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR |
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unset KV_DIR |
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|
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# KV_DIR will contain the full path to the sources directory we should use |
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qeinfo "Determining the location of the kernel source code" |
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[ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" |
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[ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" |
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|
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if [ -z "${KV_DIR}" ] |
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then |
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qeerror "Unable to find kernel sources at ${KERNEL_DIR}" |
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qeinfo "This package requires Linux sources." |
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if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then |
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qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, " |
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qeinfo "(or the kernel you wish to build against)." |
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qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location" |
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else |
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qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against." |
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fi |
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return 1 |
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fi |
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|
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qeinfo "Found kernel source directory:" |
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qeinfo " ${KV_DIR}" |
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|
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if [ ! -s "${KV_DIR}/Makefile" ] |
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then |
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qeerror "Could not find a Makefile in the kernel source directory." |
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qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources" |
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return 1 |
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fi |
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|
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# OK so now we know our sources directory, but they might be using |
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# KBUILD_OUTPUT, and we need this for .config and localversions-* |
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# so we better find it eh? |
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# do we pass KBUILD_OUTPUT on the CLI? |
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OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" |
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|
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# And if we didn't pass it, we can take a nosey in the Makefile |
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kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)" |
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OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" |
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|
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# And contrary to existing functions I feel we shouldn't trust the |
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# directory name to find version information as this seems insane. |
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# so we parse ${KV_DIR}/Makefile |
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KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" |
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KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" |
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KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" |
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KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" |
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|
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if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] |
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then |
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qeerror "Could not detect kernel version." |
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qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources." |
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return 1 |
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fi |
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|
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# and in newer versions we can also pull LOCALVERSION if it is set. |
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# but before we do this, we need to find if we use a different object directory. |
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# This *WILL* break if the user is using localversions, but we assume it was |
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# caught before this if they are. |
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[ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \ |
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OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}" |
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|
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[ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" |
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[ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" |
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if [ -n "${KV_OUT_DIR}" ]; |
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then |
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qeinfo "Found kernel object directory:" |
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qeinfo " ${KV_OUT_DIR}" |
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|
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KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)" |
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fi |
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# and if we STILL haven't got it, then we better just set it to KV_DIR |
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KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" |
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|
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KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)" |
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KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" |
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KV_LOCAL="${KV_LOCAL//\"/}" |
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|
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# And we should set KV_FULL to the full expanded version |
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KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" |
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|
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qeinfo "Found sources for kernel version:" |
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qeinfo " ${KV_FULL}" |
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|
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if [ ! -s "${KV_OUT_DIR}/.config" ] |
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then |
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qeerror "Could not find a usable .config in the kernel source directory." |
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qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources." |
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qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that" |
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qeerror "it points to the necessary object directory so that it might find .config." |
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return 1 |
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fi |
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|
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return 0 |
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} |
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|
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get_running_version() { |
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KV_FULL=$(uname -r) |
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|
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if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then |
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KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) |
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unset KV_FULL |
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get_version |
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return $? |
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elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then |
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KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) |
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unset KV_FULL |
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get_version |
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return $? |
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else |
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KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) |
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KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) |
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KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) |
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KV_PATCH=${KV_PATCH//-*} |
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[[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ |
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&& KV_EXTRA="-${KV_FULL#*-}" |
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fi |
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return 0 |
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} |
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|
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|
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# ebuild check functions |
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# --------------------------------------- |
| 330 |
|
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check_kernel_built() { |
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# if we haven't determined the version yet, we need too. |
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get_version; |
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|
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if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] |
| 336 |
then |
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eerror "These sources have not yet been prepared." |
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eerror "We cannot build against an unprepared tree." |
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eerror "To resolve this, please type the following:" |
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eerror |
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eerror "# cd ${KV_DIR}" |
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eerror "# make oldconfig" |
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eerror "# make modules_prepare" |
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eerror |
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eerror "Then please try merging this module again." |
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die "Kernel sources need compiling first" |
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fi |
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} |
| 349 |
|
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check_modules_supported() { |
| 351 |
# if we haven't determined the version yet, we need too. |
| 352 |
get_version; |
| 353 |
|
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if ! linux_chkconfig_builtin "MODULES" |
| 355 |
then |
| 356 |
eerror "These sources do not support loading external modules." |
| 357 |
eerror "to be able to use this module please enable \"Loadable modules support\"" |
| 358 |
eerror "in your kernel, recompile and then try merging this module again." |
| 359 |
die "No support for external modules in ${KV_FULL} config" |
| 360 |
fi |
| 361 |
} |
| 362 |
|
| 363 |
check_extra_config() { |
| 364 |
local config negate error local_error i n temp_config |
| 365 |
|
| 366 |
# if we haven't determined the version yet, we need too. |
| 367 |
get_version; |
| 368 |
|
| 369 |
einfo "Checking for suitable kernel configuration options" |
| 370 |
for config in ${CONFIG_CHECK} |
| 371 |
do |
| 372 |
negate="${config:0:1}" |
| 373 |
if [ "${negate}" == "!" ]; |
| 374 |
then |
| 375 |
config="${config:1}" |
| 376 |
if linux_chkconfig_present ${config} |
| 377 |
then |
| 378 |
local_error="${config}_ERROR" |
| 379 |
local_error="${!local_error}" |
| 380 |
[ -n "${local_error}" ] && eerror " ${local_error}" || \ |
| 381 |
eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is." |
| 382 |
error=1 |
| 383 |
fi |
| 384 |
elif [ "${negate}" == "@" ]; |
| 385 |
then |
| 386 |
# we never call this unless we are using MODULE_NAMES |
| 387 |
|
| 388 |
config="${config:1}" |
| 389 |
temp_config="${config//*:}" |
| 390 |
config="${config//:*}" |
| 391 |
if linux_chkconfig_present ${config} |
| 392 |
then |
| 393 |
local_error="${config}_ERROR" |
| 394 |
local_error="${!local_error}" |
| 395 |
[ -n "${local_error}" ] && eerror " ${local_error}" || \ |
| 396 |
eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is." |
| 397 |
|
| 398 |
for i in ${MODULE_NAMES} |
| 399 |
do |
| 400 |
n="${i//${temp_config}}" |
| 401 |
[ -z "${n//(*}" ] && MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}" |
| 402 |
done |
| 403 |
error=0 |
| 404 |
fi |
| 405 |
else |
| 406 |
if ! linux_chkconfig_present ${config} |
| 407 |
then |
| 408 |
# Support the new syntax first. |
| 409 |
local_error="ERROR_${config}" |
| 410 |
local_error="${!local_error}" |
| 411 |
|
| 412 |
# then fall back on the older syntax. |
| 413 |
if [[ -z ${local_error} ]] ; then |
| 414 |
local_error="${config}_ERROR" |
| 415 |
local_error="${!local_error}" |
| 416 |
fi |
| 417 |
|
| 418 |
[[ -n ${local_error} ]] && eerror " ${local_error}" || \ |
| 419 |
eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't" |
| 420 |
error=1 |
| 421 |
fi |
| 422 |
fi |
| 423 |
done |
| 424 |
|
| 425 |
if [ "${error}" == 1 ] ; |
| 426 |
then |
| 427 |
eerror "Please check to make sure these options are set correctly." |
| 428 |
eerror "Once you have satisfied these options, please try merging" |
| 429 |
eerror "this package again." |
| 430 |
die "Incorrect kernel configuration options" |
| 431 |
fi |
| 432 |
} |
| 433 |
|
| 434 |
check_zlibinflate() { |
| 435 |
# if we haven't determined the version yet, we need too. |
| 436 |
get_version; |
| 437 |
|
| 438 |
# although I restructured this code - I really really really dont support it! |
| 439 |
|
| 440 |
# bug #27882 - zlib routines are only linked into the kernel |
| 441 |
# if something compiled into the kernel calls them |
| 442 |
# |
| 443 |
# plus, for the cloop module, it appears that there's no way |
| 444 |
# to get cloop.o to include a static zlib if CONFIG_MODVERSIONS |
| 445 |
# is on |
| 446 |
|
| 447 |
local INFLATE |
| 448 |
local DEFLATE |
| 449 |
|
| 450 |
einfo "Determining the usability of ZLIB_INFLATE support in your kernel" |
| 451 |
|
| 452 |
ebegin "checking ZLIB_INFLATE" |
| 453 |
getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config |
| 454 |
eend $? |
| 455 |
[ "$?" != 0 ] && die |
| 456 |
|
| 457 |
ebegin "checking ZLIB_DEFLATE" |
| 458 |
getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config |
| 459 |
eend $? |
| 460 |
[ "$?" != 0 ] && die |
| 461 |
|
| 462 |
|
| 463 |
local LINENO_START |
| 464 |
local LINENO_END |
| 465 |
local SYMBOLS |
| 466 |
local x |
| 467 |
|
| 468 |
LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" |
| 469 |
LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" |
| 470 |
(( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) |
| 471 |
(( LINENO_END = $LINENO_END - 1 )) |
| 472 |
SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" |
| 473 |
|
| 474 |
# okay, now we have a list of symbols |
| 475 |
# we need to check each one in turn, to see whether it is set or not |
| 476 |
for x in $SYMBOLS ; do |
| 477 |
if [ "${!x}" = "y" ]; then |
| 478 |
# we have a winner! |
| 479 |
einfo "${x} ensures zlib is linked into your kernel - excellent" |
| 480 |
return 0 |
| 481 |
fi |
| 482 |
done |
| 483 |
|
| 484 |
eerror |
| 485 |
eerror "This kernel module requires ZLIB library support." |
| 486 |
eerror "You have enabled zlib support in your kernel, but haven't enabled" |
| 487 |
eerror "enabled any option that will ensure that zlib is linked into your" |
| 488 |
eerror "kernel." |
| 489 |
eerror |
| 490 |
eerror "Please ensure that you enable at least one of these options:" |
| 491 |
eerror |
| 492 |
|
| 493 |
for x in $SYMBOLS ; do |
| 494 |
eerror " * $x" |
| 495 |
done |
| 496 |
|
| 497 |
eerror |
| 498 |
eerror "Please remember to recompile and install your kernel, and reboot" |
| 499 |
eerror "into your new kernel before attempting to load this kernel module." |
| 500 |
|
| 501 |
die "Kernel doesn't include zlib support" |
| 502 |
} |
| 503 |
|
| 504 |
################################ |
| 505 |
# Default pkg_setup |
| 506 |
# Also used when inheriting linux-mod to force a get_version call |
| 507 |
|
| 508 |
linux-info_pkg_setup() { |
| 509 |
get_version || die "Unable to calculate Linux Kernel version" |
| 510 |
[ -n "${CONFIG_CHECK}" ] && check_extra_config; |
| 511 |
} |
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