/[gentoo-x86]/eclass/linux-info.eclass
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1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2006 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.82 2010/01/17 21:34:52 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.89 2011/08/18 14:58:57 vapier Exp $
4# 4#
5# Original author: John Mylchreest <johnm@gentoo.org> 5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org 6# Maintainer: kernel-misc@gentoo.org
7# 7#
8# Please direct your bugs to the current eclass maintainer :) 8# Please direct your bugs to the current eclass maintainer :)
40# You can also check that an option doesn't exist by 40# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!). 41# prepending it with an exclamation mark (!).
42# 42#
43# e.g.: CONFIG_CHECK="!MTRR" 43# e.g.: CONFIG_CHECK="!MTRR"
44# 44#
45# To simply warn about a missing option, prepend a '~'. 45# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'. 46# It may be combined with '!'.
47# 47#
48# In general, most checks should be non-fatal. The only time fatal checks should 48# In general, most checks should be non-fatal. The only time fatal checks should
49# be used is for building kernel modules or cases that a compile will fail 49# be used is for building kernel modules or cases that a compile will fail
50# without the option. 50# without the option.
207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209 else 209 else
210 ${mycat} "${2}" | \ 210 ${mycat} "${2}" | \
211 sed -n \ 211 sed -n \
212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{ 212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214 s,[[:space:]]*\$,,g ; 214 s,[[:space:]]*\$,,g ;
215 p 215 p
216 }" 216 }"
217 fi 217 fi
227 227
228linux_config_qa_check() { 228linux_config_qa_check() {
229 local f="$1" 229 local f="$1"
230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then 230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 ewarn "QA: You called $f before any linux_config_exists!" 231 ewarn "QA: You called $f before any linux_config_exists!"
232 ewarn "QA: The return value of $f will NOT gaurenteed later!" 232 ewarn "QA: The return value of $f will NOT guaranteed later!"
233 fi 233 fi
234} 234}
235 235
236# @FUNCTION: linux_config_src_exists 236# @FUNCTION: linux_config_src_exists
237# @RETURN: true or false 237# @RETURN: true or false
410 done 410 done
411 x=${x/ /} 411 x=${x/ /}
412 echo ${x} 412 echo ${x}
413} 413}
414 414
415# Check if the Makefile is valid for direct parsing.
416# Check status results:
417# - PASS, use 'getfilevar' to extract values
418# - FAIL, use 'getfilevar_noexec' to extract values
419# The check may fail if:
420# - make is not present
421# - corruption exists in the kernel makefile
422get_makefile_extract_function() {
423 local a='' b='' mkfunc='getfilevar'
424 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
425 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
426 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
427 echo "${mkfunc}"
428}
429
415# internal variable, so we know to only print the warning once 430# internal variable, so we know to only print the warning once
416get_version_warning_done= 431get_version_warning_done=
417 432
418# @FUNCTION: get_version 433# @FUNCTION: get_version
419# @DESCRIPTION: 434# @DESCRIPTION:
424# 439#
425# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 440# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
426# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the 441# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
427# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build). 442# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
428get_version() { 443get_version() {
429 local kbuild_output 444 local kbuild_output mkfunc tmplocal
430 445
431 # no need to execute this twice assuming KV_FULL is populated. 446 # no need to execute this twice assuming KV_FULL is populated.
432 # we can force by unsetting KV_FULL 447 # we can force by unsetting KV_FULL
433 [ -n "${KV_FULL}" ] && return 0 448 [ -n "${KV_FULL}" ] && return 0
434 449
481 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 496 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
482 497
483 # keep track of it 498 # keep track of it
484 KERNEL_MAKEFILE="${KV_DIR}/Makefile" 499 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
485 500
486 # Check if the Makefile is valid for direct parsing. 501 # Decide the function used to extract makefile variables.
487 # Check status results: 502 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
488 # - PASS, use 'getfilevar' to extract values
489 # - FAIL, use 'getfilevar_noexec' to extract values
490 # The check may fail if:
491 # - make is not present
492 # - corruption exists in the kernel makefile
493 local a='' b='' mkfunc='getfilevar'
494 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
495 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
496 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
497 503
498 # And if we didn't pass it, we can take a nosey in the Makefile 504 # And if we didn't pass it, we can take a nosey in the Makefile
499 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})" 505 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
500 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 506 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
501 507
527 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 533 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
528 if [ -n "${KV_OUT_DIR}" ]; 534 if [ -n "${KV_OUT_DIR}" ];
529 then 535 then
530 qeinfo "Found kernel object directory:" 536 qeinfo "Found kernel object directory:"
531 qeinfo " ${KV_OUT_DIR}" 537 qeinfo " ${KV_OUT_DIR}"
532
533 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
534 fi 538 fi
535 # and if we STILL have not got it, then we better just set it to KV_DIR 539 # and if we STILL have not got it, then we better just set it to KV_DIR
536 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 540 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
537 541
538 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 542 # Grab the kernel release from the output directory.
539 if linux_config_src_exists; then 543 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
540 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 544 # this function.
541 KV_LOCAL="${KV_LOCAL//\"/}" 545 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
546 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
547 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
548 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
549 else
550 KV_LOCAL=
551 fi
542 552
543 # For things like git that can append extra stuff: 553 # KV_LOCAL currently contains the full release; discard the first bits.
544 [ -e ${KV_DIR}/scripts/setlocalversion ] && 554 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
545 linux_chkconfig_builtin LOCALVERSION_AUTO && 555
546 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 556 # If the updated local version was not changed, the tree is not prepared.
557 # Clear out KV_LOCAL in that case.
558 # TODO: this does not detect a change in the localversion part between
559 # kernel.release and the value that would be generated.
560 if [ "$KV_LOCAL" = "$tmplocal" ]; then
561 KV_LOCAL=
562 else
563 KV_LOCAL=$tmplocal
547 fi 564 fi
548 565
549 # And we should set KV_FULL to the full expanded version 566 # And we should set KV_FULL to the full expanded version
550 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 567 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
551 568
560# It gets the version of the current running kernel and the result is the same as get_version() if the 577# It gets the version of the current running kernel and the result is the same as get_version() if the
561# function can find the sources. 578# function can find the sources.
562get_running_version() { 579get_running_version() {
563 KV_FULL=$(uname -r) 580 KV_FULL=$(uname -r)
564 581
582 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
583 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
584 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
585 unset KV_FULL
586 get_version
587 return $?
565 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 588 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
566 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 589 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
567 unset KV_FULL 590 unset KV_FULL
568 get_version 591 get_version
569 return $? 592 return $?
570 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 593 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
573 get_version 596 get_version
574 return $? 597 return $?
575 else 598 else
576 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 599 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
577 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 600 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
578 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 601 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
579 KV_PATCH=${KV_PATCH//-*} 602 KV_PATCH=${KV_PATCH//-*}
580 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 603 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
581 && KV_EXTRA="-${KV_FULL#*-}"
582 fi 604 fi
583 return 0 605 return 0
584} 606}
585 607
586# This next function is named with the eclass prefix to avoid conflicts with 608# This next function is named with the eclass prefix to avoid conflicts with

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