/[gentoo-x86]/eclass/linux-info.eclass
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1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2011 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 1.84 2010/06/17 23:46:25 abcd Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.91 2011/12/12 22:01:37 vapier Exp $
4#
5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org
7#
8# Please direct your bugs to the current eclass maintainer :)
9 4
10# @ECLASS: linux-info.eclass 5# @ECLASS: linux-info.eclass
11# @MAINTAINER: 6# @MAINTAINER:
12# kernel-misc@gentoo.org 7# kernel-misc@gentoo.org
8# @AUTHOR:
9# Original author: John Mylchreest <johnm@gentoo.org>
13# @BLURB: eclass used for accessing kernel related information 10# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION: 11# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel 12# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed. 13# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split 14# It is vital for linux-mod.eclass to function correctly, and is split
40# You can also check that an option doesn't exist by 37# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!). 38# prepending it with an exclamation mark (!).
42# 39#
43# e.g.: CONFIG_CHECK="!MTRR" 40# e.g.: CONFIG_CHECK="!MTRR"
44# 41#
45# To simply warn about a missing option, prepend a '~'. 42# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'. 43# It may be combined with '!'.
47# 44#
48# In general, most checks should be non-fatal. The only time fatal checks should 45# 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 46# be used is for building kernel modules or cases that a compile will fail
50# without the option. 47# without the option.
207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 204 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 205 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209 else 206 else
210 ${mycat} "${2}" | \ 207 ${mycat} "${2}" | \
211 sed -n \ 208 sed -n \
212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{ 209 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 210 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214 s,[[:space:]]*\$,,g ; 211 s,[[:space:]]*\$,,g ;
215 p 212 p
216 }" 213 }"
217 fi 214 fi
218} 215}
219 216
220# @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE 217# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
218# @INTERNAL
221# @DESCRIPTION: 219# @DESCRIPTION:
222# This is only set if one of the linux_config_*exists functions has been called. 220# This is only set if one of the linux_config_*exists functions has been called.
223# We use it for a QA warning that the check for a config has not been performed, 221# We use it for a QA warning that the check for a config has not been performed,
224# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no 222# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
225# config is available at all. 223# config is available at all.
227 225
228linux_config_qa_check() { 226linux_config_qa_check() {
229 local f="$1" 227 local f="$1"
230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then 228 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 ewarn "QA: You called $f before any linux_config_exists!" 229 ewarn "QA: You called $f before any linux_config_exists!"
232 ewarn "QA: The return value of $f will NOT gaurenteed later!" 230 ewarn "QA: The return value of $f will NOT guaranteed later!"
233 fi 231 fi
234} 232}
235 233
236# @FUNCTION: linux_config_src_exists 234# @FUNCTION: linux_config_src_exists
237# @RETURN: true or false 235# @RETURN: true or false
359# kernel_is 2 6 returns true 357# kernel_is 2 6 returns true
360# kernel_is 2 6 8 returns false 358# kernel_is 2 6 8 returns false
361# kernel_is 2 6 9 returns true 359# kernel_is 2 6 9 returns true
362# @CODE 360# @CODE
363 361
364# got the jist yet? 362# Note: duplicated in kernel-2.eclass
365
366kernel_is() { 363kernel_is() {
367 # if we haven't determined the version yet, we need to. 364 # if we haven't determined the version yet, we need to.
368 linux-info_get_any_version 365 linux-info_get_any_version
369 366
370 local operator testagainst value x=0 y=0 z=0 367 # Now we can continue
368 local operator test value
371 369
372 case ${1} in 370 case ${1#-} in
373 -lt|lt) operator="-lt"; shift;; 371 lt) operator="-lt"; shift;;
374 -gt|gt) operator="-gt"; shift;; 372 gt) operator="-gt"; shift;;
375 -le|le) operator="-le"; shift;; 373 le) operator="-le"; shift;;
376 -ge|ge) operator="-ge"; shift;; 374 ge) operator="-ge"; shift;;
377 -eq|eq) operator="-eq"; shift;; 375 eq) operator="-eq"; shift;;
378 *) operator="-eq";; 376 *) operator="-eq";;
379 esac 377 esac
380
381 for x in ${@}; do
382 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
383 value="${value}${x}"
384 z=$((${z} + 1))
385
386 case ${z} in
387 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do testagainst="${testagainst}0"; done;
388 testagainst="${testagainst}${KV_MAJOR}";;
389 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do testagainst="${testagainst}0"; done;
390 testagainst="${testagainst}${KV_MINOR}";;
391 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do testagainst="${testagainst}0"; done;
392 testagainst="${testagainst}${KV_PATCH}";;
393 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 378 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
394 esac
395 done
396 379
397 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1 380 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
381 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
382 [ ${test} ${operator} ${value} ]
398} 383}
399 384
400get_localversion() { 385get_localversion() {
401 local lv_list i x 386 local lv_list i x
402 387
439# 424#
440# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 425# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
441# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the 426# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
442# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build). 427# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
443get_version() { 428get_version() {
444 local kbuild_output mkfunc 429 local kbuild_output mkfunc tmplocal
445 430
446 # no need to execute this twice assuming KV_FULL is populated. 431 # no need to execute this twice assuming KV_FULL is populated.
447 # we can force by unsetting KV_FULL 432 # we can force by unsetting KV_FULL
448 [ -n "${KV_FULL}" ] && return 0 433 [ -n "${KV_FULL}" ] && return 0
449 434
495 # do we pass KBUILD_OUTPUT on the CLI? 480 # do we pass KBUILD_OUTPUT on the CLI?
496 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 481 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
497 482
498 # keep track of it 483 # keep track of it
499 KERNEL_MAKEFILE="${KV_DIR}/Makefile" 484 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
500 485
501 # Decide the function used to extract makefile variables. 486 # Decide the function used to extract makefile variables.
502 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")" 487 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
503 488
504 # And if we didn't pass it, we can take a nosey in the Makefile 489 # And if we didn't pass it, we can take a nosey in the Makefile
505 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})" 490 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
533 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 518 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
534 if [ -n "${KV_OUT_DIR}" ]; 519 if [ -n "${KV_OUT_DIR}" ];
535 then 520 then
536 qeinfo "Found kernel object directory:" 521 qeinfo "Found kernel object directory:"
537 qeinfo " ${KV_OUT_DIR}" 522 qeinfo " ${KV_OUT_DIR}"
538
539 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
540 fi 523 fi
541 # and if we STILL have not got it, then we better just set it to KV_DIR 524 # and if we STILL have not got it, then we better just set it to KV_DIR
542 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 525 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
543 526
544 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 527 # Grab the kernel release from the output directory.
545 if linux_config_src_exists; then 528 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
546 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 529 # this function.
547 KV_LOCAL="${KV_LOCAL//\"/}" 530 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
531 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
532 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
533 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
534 else
535 KV_LOCAL=
536 fi
548 537
549 # For things like git that can append extra stuff: 538 # KV_LOCAL currently contains the full release; discard the first bits.
550 [ -e ${KV_DIR}/scripts/setlocalversion ] && 539 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
551 linux_chkconfig_builtin LOCALVERSION_AUTO && 540
552 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 541 # If the updated local version was not changed, the tree is not prepared.
542 # Clear out KV_LOCAL in that case.
543 # TODO: this does not detect a change in the localversion part between
544 # kernel.release and the value that would be generated.
545 if [ "$KV_LOCAL" = "$tmplocal" ]; then
546 KV_LOCAL=
547 else
548 KV_LOCAL=$tmplocal
553 fi 549 fi
554 550
555 # And we should set KV_FULL to the full expanded version 551 # And we should set KV_FULL to the full expanded version
556 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 552 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
557 553
585 get_version 581 get_version
586 return $? 582 return $?
587 else 583 else
588 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 584 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
589 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 585 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
590 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 586 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
591 KV_PATCH=${KV_PATCH//-*} 587 KV_PATCH=${KV_PATCH//-*}
592 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 588 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
593 && KV_EXTRA="-${KV_FULL#*-}"
594 fi 589 fi
595 return 0 590 return 0
596} 591}
597 592
598# This next function is named with the eclass prefix to avoid conflicts with 593# This next function is named with the eclass prefix to avoid conflicts with

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