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Revision 1.3 Revision 1.82
1# Copyright 1999-2004 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 1.3 2004/11/27 11:26:52 johnm Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.82 2010/01/17 21:34:52 robbat2 Exp $
4# 4#
5# This eclass provides functions for querying the installed kernel 5# Original author: John Mylchreest <johnm@gentoo.org>
6# source version, selected kernel options etc. 6# Maintainer: kernel-misc@gentoo.org
7# 7#
8# Please direct your bugs to the current eclass maintainer :)
8 9
9ECLASS=linux-info 10# @ECLASS: linux-info.eclass
10INHERITED="$INHERITED $ECLASS" 11# @MAINTAINER:
12# kernel-misc@gentoo.org
13# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split
18# out so that any ebuild behaviour "templates" are abstracted out
19# using additional eclasses.
20#
21# "kernel config" in this file means:
22# The .config of the currently installed sources is used as the first
23# preference, with a fall-back to bundled config (/proc/config.gz) if available.
24
25# A Couple of env vars are available to effect usage of this eclass
26# These are as follows:
27
28# @ECLASS-VARIABLE: KERNEL_DIR
29# @DESCRIPTION:
30# A string containing the directory of the target kernel sources. The default value is
31# "/usr/src/linux"
32
33# @ECLASS-VARIABLE: CONFIG_CHECK
34# @DESCRIPTION:
35# A string containing a list of .config options to check for before
36# proceeding with the install.
37#
38# e.g.: CONFIG_CHECK="MTRR"
39#
40# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!).
42#
43# e.g.: CONFIG_CHECK="!MTRR"
44#
45# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'.
47#
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
50# without the option.
51#
52# This is to allow usage of binary kernels, and minimal systems without kernel
53# sources.
54
55# @ECLASS-VARIABLE: ERROR_<CFG>
56# @DESCRIPTION:
57# A string containing the error message to display when the check against CONFIG_CHECK
58# fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
59#
60# e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
61
62# @ECLASS-VARIABLE: KBUILD_OUTPUT
63# @DESCRIPTION:
64# A string passed on commandline, or set from the kernel makefile. It contains the directory
65# which is to be used as the kernel object directory.
66
67# There are also a couple of variables which are set by this, and shouldn't be
68# set by hand. These are as follows:
69
70# @ECLASS-VARIABLE: KV_FULL
71# @DESCRIPTION:
72# A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
73
74# @ECLASS-VARIABLE: KV_MAJOR
75# @DESCRIPTION:
76# A read-only variable. It's an integer containing the kernel major version. ie: 2
77
78# @ECLASS-VARIABLE: KV_MINOR
79# @DESCRIPTION:
80# A read-only variable. It's an integer containing the kernel minor version. ie: 6
81
82# @ECLASS-VARIABLE: KV_PATCH
83# @DESCRIPTION:
84# A read-only variable. It's an integer containing the kernel patch version. ie: 9
85
86# @ECLASS-VARIABLE: KV_EXTRA
87# @DESCRIPTION:
88# A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
89
90# @ECLASS-VARIABLE: KV_LOCAL
91# @DESCRIPTION:
92# A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
93
94# @ECLASS-VARIABLE: KV_DIR
95# @DESCRIPTION:
96# A read-only variable. It's a string containing the kernel source directory, will be null if
97# KERNEL_DIR is invalid.
98
99# @ECLASS-VARIABLE: KV_OUT_DIR
100# @DESCRIPTION:
101# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102# KBUILD_OUTPUT is used. This should be used for referencing .config.
103
104# And to ensure all the weirdness with crosscompile
105inherit toolchain-funcs versionator
106
107EXPORT_FUNCTIONS pkg_setup
108
109DEPEND=""
110RDEPEND=""
11 111
12# Overwritable environment Var's 112# Overwritable environment Var's
13# --------------------------------------- 113# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 114KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
15 115
16 116
117# Bug fixes
118# fix to bug #75034
119case ${ARCH} in
120 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
121 ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
122esac
123
124# @FUNCTION: set_arch_to_kernel
125# @DESCRIPTION:
126# Set the env ARCH to match what the kernel expects.
127set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
128# @FUNCTION: set_arch_to_portage
129# @DESCRIPTION:
130# Set the env ARCH to match what portage expects.
131set_arch_to_portage() { export ARCH=$(tc-arch); }
132
133# qeinfo "Message"
134# -------------------
135# qeinfo is a quiet einfo call when EBUILD_PHASE
136# should not have visible output.
137qout() {
138 local outputmsg type
139 type=${1}
140 shift
141 outputmsg="${@}"
142 case "${EBUILD_PHASE}" in
143 depend) unset outputmsg;;
144 clean) unset outputmsg;;
145 preinst) unset outputmsg;;
146 esac
147 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
148}
149
150qeinfo() { qout einfo "${@}" ; }
151qewarn() { qout ewarn "${@}" ; }
152qeerror() { qout eerror "${@}" ; }
17 153
18# File Functions 154# File Functions
19# --------------------------------------- 155# ---------------------------------------
20 156
21# getfilevar accepts 2 vars as follows: 157# @FUNCTION: getfilevar
22# getfilevar <VARIABLE> <CONFIGFILE> 158# @USAGE: variable configfile
23 159# @RETURN: the value of the variable
160# @DESCRIPTION:
161# It detects the value of the variable defined in the file configfile. This is
162# done by including the configfile, and printing the variable with Make.
163# It WILL break if your makefile has missing dependencies!
24getfilevar() { 164getfilevar() {
25local ERROR 165local ERROR basefname basedname myARCH="${ARCH}"
26 ERROR=0 166 ERROR=0
27 167
28 [ -z "${1}" ] && ERROR=1 168 [ -z "${1}" ] && ERROR=1
29 [ -z "${2}" ] && ERROR=1
30 [ ! -f "${2}" ] && ERROR=1 169 [ ! -f "${2}" ] && ERROR=1
31 170
32 if [ "${ERROR}" = 1 ] 171 if [ "${ERROR}" = 1 ]
33 then 172 then
173 echo -e "\n"
34 eerror "getfilevar requires 2 variables, with the second a valid file." 174 eerror "getfilevar requires 2 variables, with the second a valid file."
35 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 175 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
36 else 176 else
37 grep -e "^$1[= ]" $2 | sed 's: = :=:' | cut -d= -f2- 177 basefname="$(basename ${2})"
38 fi 178 basedname="$(dirname ${2})"
39} 179 unset ARCH
40 180
181 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
182 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
183
184 ARCH=${myARCH}
185 fi
186}
187
188# @FUNCTION: getfilevar_noexec
189# @USAGE: variable configfile
190# @RETURN: the value of the variable
191# @DESCRIPTION:
192# It detects the value of the variable defined in the file configfile.
193# This is done with sed matching an expression only. If the variable is defined,
194# you will run into problems. See getfilevar for those cases.
41getfilevar_isset() { 195getfilevar_noexec() {
196 local ERROR basefname basedname mycat myARCH="${ARCH}"
197 ERROR=0
198 mycat='cat'
199
200 [ -z "${1}" ] && ERROR=1
201 [ ! -f "${2}" ] && ERROR=1
202 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
203
204 if [ "${ERROR}" = 1 ]
205 then
206 echo -e "\n"
207 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
208 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
209 else
210 ${mycat} "${2}" | \
211 sed -n \
212 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
213 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
214 s,[[:space:]]*\$,,g ;
215 p
216 }"
217 fi
218}
219
220# @PRIVATE-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
221# @DESCRIPTION:
222# 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,
224# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
225# config is available at all.
226_LINUX_CONFIG_EXISTS_DONE=
227
228linux_config_qa_check() {
229 local f="$1"
230 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
231 ewarn "QA: You called $f before any linux_config_exists!"
232 ewarn "QA: The return value of $f will NOT gaurenteed later!"
233 fi
234}
235
236# @FUNCTION: linux_config_src_exists
237# @RETURN: true or false
238# @DESCRIPTION:
239# It returns true if .config exists in a build directory otherwise false
240linux_config_src_exists() {
241 export _LINUX_CONFIG_EXISTS_DONE=1
242 [ -s "${KV_OUT_DIR}/.config" ]
243}
244
245# @FUNCTION: linux_config_bin_exists
246# @RETURN: true or false
247# @DESCRIPTION:
248# It returns true if .config exists in /proc, otherwise false
249linux_config_bin_exists() {
250 export _LINUX_CONFIG_EXISTS_DONE=1
251 [ -s "/proc/config.gz" ]
252}
253
254# @FUNCTION: linux_config_exists
255# @RETURN: true or false
256# @DESCRIPTION:
257# It returns true if .config exists otherwise false
258#
259# This function MUST be checked before using any of the linux_chkconfig_*
260# functions.
261linux_config_exists() {
262 linux_config_src_exists || linux_config_bin_exists
263}
264
265# @FUNCTION: require_configured_kernel
266# @DESCRIPTION:
267# This function verifies that the current kernel is configured (it checks against the existence of .config)
268# otherwise it dies.
269require_configured_kernel() {
270 if ! linux_config_src_exists; then
271 qeerror "Could not find a usable .config in the kernel source directory."
272 qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
273 qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
274 qeerror "it points to the necessary object directory so that it might find .config."
275 die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
276 fi
277}
278
279# @FUNCTION: linux_chkconfig_present
280# @USAGE: option
281# @RETURN: true or false
282# @DESCRIPTION:
283# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
284# If linux_config_exists returns false, the results of this are UNDEFINED. You
285# MUST call linux_config_exists first.
286linux_chkconfig_present() {
287 linux_config_qa_check linux_chkconfig_present
42local RESULT 288 local RESULT
43 RESULT="$(getfilevar ${1} ${2})" 289 local config
290 config="${KV_OUT_DIR}/.config"
291 [ ! -f "${config}" ] && config="/proc/config.gz"
292 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
44 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 293 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
45} 294}
46 295
47getfilevar_ismodule() { 296# @FUNCTION: linux_chkconfig_module
297# @USAGE: option
298# @RETURN: true or false
299# @DESCRIPTION:
300# It checks that CONFIG_<option>=m is present in the current kernel .config
301# If linux_config_exists returns false, the results of this are UNDEFINED. You
302# MUST call linux_config_exists first.
303linux_chkconfig_module() {
304 linux_config_qa_check linux_chkconfig_module
48local RESULT 305 local RESULT
49 RESULT="$(getfilevar ${1} ${2})" 306 local config
307 config="${KV_OUT_DIR}/.config"
308 [ ! -f "${config}" ] && config="/proc/config.gz"
309 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
50 [ "${RESULT}" = "m" ] && return 0 || return 1 310 [ "${RESULT}" = "m" ] && return 0 || return 1
51} 311}
52 312
53getfilevar_isbuiltin() { 313# @FUNCTION: linux_chkconfig_builtin
314# @USAGE: option
315# @RETURN: true or false
316# @DESCRIPTION:
317# It checks that CONFIG_<option>=y is present in the current kernel .config
318# If linux_config_exists returns false, the results of this are UNDEFINED. You
319# MUST call linux_config_exists first.
320linux_chkconfig_builtin() {
321 linux_config_qa_check linux_chkconfig_builtin
54local RESULT 322 local RESULT
55 RESULT="$(getfilevar ${1} ${2})" 323 local config
324 config="${KV_OUT_DIR}/.config"
325 [ ! -f "${config}" ] && config="/proc/config.gz"
326 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
56 [ "${RESULT}" = "y" ] && return 0 || return 1 327 [ "${RESULT}" = "y" ] && return 0 || return 1
328}
329
330# @FUNCTION: linux_chkconfig_string
331# @USAGE: option
332# @RETURN: CONFIG_<option>
333# @DESCRIPTION:
334# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
335# If linux_config_exists returns false, the results of this are UNDEFINED. You
336# MUST call linux_config_exists first.
337linux_chkconfig_string() {
338 linux_config_qa_check linux_chkconfig_string
339 local config
340 config="${KV_OUT_DIR}/.config"
341 [ ! -f "${config}" ] && config="/proc/config.gz"
342 getfilevar_noexec "CONFIG_${1}" "${config}"
57} 343}
58 344
59# Versioning Functions 345# Versioning Functions
60# --------------------------------------- 346# ---------------------------------------
61 347
62# kernel_is returns true when the version is the same as the passed version 348# @FUNCTION: kernel_is
349# @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
350# @RETURN: true or false
351# @DESCRIPTION:
352# It returns true when the current kernel version satisfies the comparison against the passed version.
353# -eq is the default comparison.
63# 354#
355# @CODE
64# For Example where KV = 2.6.9 356# For Example where KV = 2.6.9
65# kernel_is 2 4 returns false 357# kernel_is 2 4 returns false
66# kernel_is 2 returns true 358# kernel_is 2 returns true
67# kernel_is 2 6 returns true 359# kernel_is 2 6 returns true
68# kernel_is 2 6 8 returns false 360# kernel_is 2 6 8 returns false
69# kernel_is 2 6 9 returns true 361# kernel_is 2 6 9 returns true
70# 362# @CODE
363
71# got the jist yet? 364# got the jist yet?
72 365
73kernel_is() { 366kernel_is() {
74 # if we haven't determined the version yet, we need too. 367 # if we haven't determined the version yet, we need to.
75 get_version; 368 linux-info_get_any_version
76
77 local RESULT
78 RESULT=1
79
80 if [ -n "${1}" ]
81 then
82 [ "${1}" = "${KV_MAJOR}" ] && RESULT=0
83 fi
84
85 if [ -n "${2}" ]
86 then
87 RESULT=1
88 [ "${2}" = "${KV_MINOR}" ] && RESULT=0
89 fi
90
91 if [ -n "${3}" ]
92 then
93 RESULT=1
94 [ "${3}" = "${KV_PATCH}" ] && RESULT=0
95 fi
96 return ${RESULT}
97}
98 369
370 local operator testagainst value x=0 y=0 z=0
371
372 case ${1} in
373 -lt|lt) operator="-lt"; shift;;
374 -gt|gt) operator="-gt"; shift;;
375 -le|le) operator="-le"; shift;;
376 -ge|ge) operator="-ge"; shift;;
377 -eq|eq) operator="-eq"; shift;;
378 *) operator="-eq";;
379 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.";;
394 esac
395 done
396
397 [ "${testagainst}" ${operator} "${value}" ] && return 0 || return 1
398}
399
400get_localversion() {
401 local lv_list i x
402
403 # ignore files with ~ in it.
404 for i in $(ls ${1}/localversion* 2>/dev/null); do
405 [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
406 done
407
408 for i in ${lv_list}; do
409 x="${x}$(<${i})"
410 done
411 x=${x/ /}
412 echo ${x}
413}
414
415# internal variable, so we know to only print the warning once
416get_version_warning_done=
417
418# @FUNCTION: get_version
419# @DESCRIPTION:
420# It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
421# (if KV_FULL is already set it does nothing).
422#
423# The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
424#
425# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
426# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
427# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
99get_version() { 428get_version() {
429 local kbuild_output
430
100 # no need to execute this twice assuming KV_FULL is populated. 431 # no need to execute this twice assuming KV_FULL is populated.
101 # we can force by unsetting KV_FULL 432 # we can force by unsetting KV_FULL
102 if [ -n "${KV_FULL}" ] 433 [ -n "${KV_FULL}" ] && return 0
103 then
104 # Lets keep this quiet eh?
105 # einfo "\${KV_FULL} is already set. Not running get_version again"
106 return
107 fi
108 434
109 # if we dont know KV_FULL, then we need too. 435 # if we dont know KV_FULL, then we need too.
110 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 436 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
111 unset KV_DIR 437 unset KV_DIR
112 438
113 # KV_DIR will contain the full path to the sources directory we should use 439 # KV_DIR will contain the full path to the sources directory we should use
440 [ -z "${get_version_warning_done}" ] && \
114 einfo "Determining the location of the kernel source code" 441 qeinfo "Determining the location of the kernel source code"
115 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})" 442 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
116 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 443 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
117 444
118 if [ -z "${KV_DIR}" ] 445 if [ -z "${KV_DIR}" ]
119 then 446 then
447 if [ -z "${get_version_warning_done}" ]; then
448 get_version_warning_done=1
120 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 449 qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
121 die 450 #qeinfo "This package requires Linux sources."
451 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
452 qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
453 qeinfo "(or the kernel you wish to build against)."
454 qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
455 else
456 qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
457 fi
122 fi 458 fi
123 459 return 1
460 fi
461
462 if [ -z "${get_version_warning_done}" ]; then
463 qeinfo "Found kernel source directory:"
464 qeinfo " ${KV_DIR}"
465 fi
466
467 if [ ! -s "${KV_DIR}/Makefile" ]
468 then
469 if [ -z "${get_version_warning_done}" ]; then
470 get_version_warning_done=1
471 qeerror "Could not find a Makefile in the kernel source directory."
472 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
473 fi
474 return 1
475 fi
476
477 # OK so now we know our sources directory, but they might be using
478 # KBUILD_OUTPUT, and we need this for .config and localversions-*
479 # so we better find it eh?
480 # do we pass KBUILD_OUTPUT on the CLI?
481 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
482
483 # keep track of it
484 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
485
486 # Check if the Makefile is valid for direct parsing.
487 # Check status results:
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}" != "${b}" ]] && mkfunc='getfilevar_noexec'
497
498 # And if we didn't pass it, we can take a nosey in the Makefile
499 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
500 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
501
124 # And contrary to existing functions I feel we shouldn't trust the 502 # And contrary to existing functions I feel we shouldn't trust the
125 # directory name to find version information as this seems insane. 503 # directory name to find version information as this seems insane.
126 # so we parse ${KV_DIR}/Makefile 504 # so we parse ${KERNEL_MAKEFILE}
127 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 505 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
128 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 506 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
129 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 507 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
130 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 508 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
509
510 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
511 then
512 if [ -z "${get_version_warning_done}" ]; then
513 get_version_warning_done=1
514 qeerror "Could not detect kernel version."
515 qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
516 fi
517 return 1
518 fi
519
131 # and in newer versions we can also pull LOCALVERSION if it is set. 520 # and in newer versions we can also pull LOCALVERSION if it is set.
132 KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" 521 # but before we do this, we need to find if we use a different object directory.
133 522 # This *WILL* break if the user is using localversions, but we assume it was
523 # caught before this if they are.
524 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
525
526 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
527 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
528 if [ -n "${KV_OUT_DIR}" ];
529 then
530 qeinfo "Found kernel object directory:"
531 qeinfo " ${KV_OUT_DIR}"
532
533 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
534 fi
535 # and if we STILL have not got it, then we better just set it to KV_DIR
536 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
537
538 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})"
539 if linux_config_src_exists; then
540 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
541 KV_LOCAL="${KV_LOCAL//\"/}"
542
543 # For things like git that can append extra stuff:
544 [ -e ${KV_DIR}/scripts/setlocalversion ] &&
545 linux_chkconfig_builtin LOCALVERSION_AUTO &&
546 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})"
547 fi
548
134 # And we should set KV_FULL to the full expanded version 549 # And we should set KV_FULL to the full expanded version
135 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 550 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
136 551
137 if [ -z "${KV_FULL}" ] 552 qeinfo "Found sources for kernel version:"
138 then 553 qeinfo " ${KV_FULL}"
139 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}" 554
140 eerror "Please check a kernel source exists in this directory." 555 return 0
141 die 556}
557
558# @FUNCTION: get_running_version
559# @DESCRIPTION:
560# It gets the version of the current running kernel and the result is the same as get_version() if the
561# function can find the sources.
562get_running_version() {
563 KV_FULL=$(uname -r)
564
565 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
566 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
567 unset KV_FULL
568 get_version
569 return $?
570 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
571 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
572 unset KV_FULL
573 get_version
574 return $?
142 else 575 else
143 einfo "Found kernel source directory:" 576 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
144 einfo " ${KV_DIR}" 577 KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
145 einfo "with sources for kernel version:" 578 KV_PATCH=$(get_version_component_range 3- ${KV_FULL})
146 einfo " ${KV_FULL}" 579 KV_PATCH=${KV_PATCH//-*}
580 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \
581 && KV_EXTRA="-${KV_FULL#*-}"
147 fi 582 fi
583 return 0
148} 584}
149 585
586# This next function is named with the eclass prefix to avoid conflicts with
587# some old versionator-like eclass functions.
150 588
589# @FUNCTION: linux-info_get_any_version
590# @DESCRIPTION:
591# This attempts to find the version of the sources, and otherwise falls back to
592# the version of the running kernel.
593linux-info_get_any_version() {
594 get_version
595 if [[ $? -ne 0 ]]; then
596 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
597 get_running_version
598 fi
599}
151 600
152 601
153# ebuild check functions 602# ebuild check functions
154# --------------------------------------- 603# ---------------------------------------
155 604
605# @FUNCTION: check_kernel_built
606# @DESCRIPTION:
607# This function verifies that the current kernel sources have been already prepared otherwise it dies.
156check_kernel_built() { 608check_kernel_built() {
157 # if we haven't determined the version yet, we need too. 609 # if we haven't determined the version yet, we need to
610 require_configured_kernel
158 get_version; 611 get_version
159 612
160 if [ ! -f "${KV_DIR}/System.map" ] 613 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ]
161 then 614 then
162 eerror "These sources have not yet been compiled." 615 eerror "These sources have not yet been prepared."
163 eerror "We cannot build against an uncompiled tree." 616 eerror "We cannot build against an unprepared tree."
164 eerror "To resolve this, please type the following:" 617 eerror "To resolve this, please type the following:"
165 eerror 618 eerror
166 eerror "# cd ${KV_DIR}" 619 eerror "# cd ${KV_DIR}"
167 eerror "# make oldconfig" 620 eerror "# make oldconfig"
168 eerror "# make bzImage modules modules_install" 621 eerror "# make modules_prepare"
169 eerror 622 eerror
170 eerror "Then please try merging this module again." 623 eerror "Then please try merging this module again."
171 die "Kernel sources need compiling first" 624 die "Kernel sources need compiling first"
172 fi 625 fi
173} 626}
174 627
628# @FUNCTION: check_modules_supported
629# @DESCRIPTION:
630# This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
175check_modules_supported() { 631check_modules_supported() {
176 # if we haven't determined the version yet, we need too. 632 # if we haven't determined the version yet, we need too.
633 require_configured_kernel
177 get_version; 634 get_version
178 635
179 getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config 636 if ! linux_chkconfig_builtin "MODULES"
180 if [ "$?" != 0 ]
181 then 637 then
182 eerror "These sources do not support loading external modules." 638 eerror "These sources do not support loading external modules."
183 eerror "to be able to use this module please enable \"Loadable modules support\"" 639 eerror "to be able to use this module please enable \"Loadable modules support\""
184 eerror "in your kernel, recompile and then try merging this module again." 640 eerror "in your kernel, recompile and then try merging this module again."
185 die No support for external modules in ${KV_FUll} config 641 die "No support for external modules in ${KV_FULL} config"
186 fi 642 fi
187} 643}
188 644
645# @FUNCTION: check_extra_config
646# @DESCRIPTION:
647# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
648# the prefix ~ is not used) doesn't satisfy the directive.
189check_extra_config() { 649check_extra_config() {
190local config negate error 650 local config negate die error reworkmodulenames
651 local soft_errors_count=0 hard_errors_count=0 config_required=0
652 # store the value of the QA check, because otherwise we won't catch usages
653 # after if check_extra_config is called AND other direct calls are done
654 # later.
655 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
191 656
192 # if we haven't determined the version yet, we need too. 657 # if we haven't determined the version yet, we need to
193 get_version; 658 linux-info_get_any_version
194 659
195 einfo "Checking for suitable kernel configuration options" 660 # Determine if we really need a .config. The only time when we don't need
661 # one is when all of the CONFIG_CHECK options are prefixed with "~".
196 for config in ${CONFIG_CHECK} 662 for config in ${CONFIG_CHECK}
197 do 663 do
198 negate="${config:0:1}" 664 if [[ "${config:0:1}" != "~" ]]; then
199 if [ "${negate}" == "!" ]; 665 config_required=1
200 then 666 break
667 fi
668 done
669
670 if [[ ${config_required} == 0 ]]; then
671 # In the case where we don't require a .config, we can now bail out
672 # if the user has no .config as there is nothing to do. Otherwise
673 # code later will cause a failure due to missing .config.
674 if ! linux_config_exists; then
675 ewarn "Unable to check for the following kernel config options due"
676 ewarn "to absence of any configured kernel sources or compiled"
677 ewarn "config:"
678 for config in ${CONFIG_CHECK}; do
679 local_error="ERROR_${config#\~}"
680 msg="${!local_error}"
681 if [[ "x${msg}" == "x" ]]; then
682 local_error="WARNING_${config#\~}"
683 msg="${!local_error}"
684 fi
685 ewarn " - ${config#\~}${msg:+ - }${msg}"
686 done
687 ewarn "You're on your own to make sure they are set if needed."
688 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
689 return 0
690 fi
691 else
692 require_configured_kernel
693 fi
694
695 einfo "Checking for suitable kernel configuration options..."
696
697 for config in ${CONFIG_CHECK}
698 do
699 # if we specify any fatal, ensure we honor them
700 die=1
701 error=0
702 negate=0
703 reworkmodulenames=0
704
705 if [[ ${config:0:1} == "~" ]]; then
706 die=0
201 config="${config:1}" 707 config=${config:1}
202 if getfilevar_isset ${config} ${KV_DIR}/.config ; 708 elif [[ ${config:0:1} == "@" ]]; then
203 then 709 die=0
204 eerror " ${config}:\tshould not be set in the kernel configuration, but it is." 710 reworkmodulenames=1
711 config=${config:1}
712 fi
713 if [[ ${config:0:1} == "!" ]]; then
714 negate=1
715 config=${config:1}
716 fi
717
718 if [[ ${negate} == 1 ]]; then
719 linux_chkconfig_present ${config} && error=2
720 elif [[ ${reworkmodulenames} == 1 ]]; then
721 local temp_config="${config//*:}" i n
722 config="${config//:*}"
723 if linux_chkconfig_present ${config}; then
724 for i in ${MODULE_NAMES}; do
725 n="${i//${temp_config}}"
726 [[ -z ${n//\(*} ]] && \
727 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
728 done
205 error=1 729 error=2
206 fi 730 fi
207 else 731 else
208 if ! getfilevar_isset ${config} ${KV_DIR}/.config ; 732 linux_chkconfig_present ${config} || error=1
209 then 733 fi
210 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 734
211 error=1 735 if [[ ${error} > 0 ]]; then
736 local report_func="eerror" local_error
737 local_error="ERROR_${config}"
738 local_error="${!local_error}"
739
740 if [[ -z "${local_error}" ]]; then
741 # using old, deprecated format.
742 local_error="${config}_ERROR"
743 local_error="${!local_error}"
212 fi 744 fi
745 if [[ ${die} == 0 && -z "${local_error}" ]]; then
746 #soft errors can be warnings
747 local_error="WARNING_${config}"
748 local_error="${!local_error}"
749 if [[ -n "${local_error}" ]] ; then
750 report_func="ewarn"
751 fi
752 fi
753
754 if [[ -z "${local_error}" ]]; then
755 [[ ${error} == 1 ]] \
756 && local_error="is not set when it should be." \
757 || local_error="should not be set. But it is."
758 local_error="CONFIG_${config}:\t ${local_error}"
759 fi
760 if [[ ${die} == 0 ]]; then
761 ${report_func} " ${local_error}"
762 soft_errors_count=$[soft_errors_count + 1]
763 else
764 ${report_func} " ${local_error}"
765 hard_errors_count=$[hard_errors_count + 1]
766 fi
213 fi 767 fi
214 done 768 done
215 769
216 if [ -n "${error}" ] ; 770 if [[ ${hard_errors_count} > 0 ]]; then
217 then
218 eerror "Please check to make sure these options are set correctly." 771 eerror "Please check to make sure these options are set correctly."
772 eerror "Failure to do so may cause unexpected problems."
219 eerror "Once you have satisfied these options, please try merging" 773 eerror "Once you have satisfied these options, please try merging"
220 eerror "this package again." 774 eerror "this package again."
775 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
221 die Incorrect kernel configuration options 776 die "Incorrect kernel configuration options"
777 elif [[ ${soft_errors_count} > 0 ]]; then
778 ewarn "Please check to make sure these options are set correctly."
779 ewarn "Failure to do so may cause unexpected problems."
780 else
781 eend 0
222 fi 782 fi
783 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
223} 784}
224 785
225check_zlibinflate() { 786check_zlibinflate() {
226 # if we haven't determined the version yet, we need too. 787 # if we haven't determined the version yet, we need to
788 require_configured_kernel
227 get_version; 789 get_version
228 790
229 # although I restructured this code - I really really really dont support it! 791 # although I restructured this code - I really really really dont support it!
230 792
231 # bug #27882 - zlib routines are only linked into the kernel 793 # bug #27882 - zlib routines are only linked into the kernel
232 # if something compiled into the kernel calls them 794 # if something compiled into the kernel calls them
233 # 795 #
234 # plus, for the cloop module, it appears that there's no way 796 # plus, for the cloop module, it appears that there's no way
235 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS 797 # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
236 # is on 798 # is on
237 799
238local INFLATE 800 local INFLATE
239local DEFLATE 801 local DEFLATE
240 802
241 einfo "Determining the usability of ZLIB_INFLATE support in your kernel" 803 einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
242 804
243 ebegin "checking ZLIB_INFLATE" 805 ebegin "checking ZLIB_INFLATE"
244 getfilevar_isbuiltin CONFIG_ZLIB_INFLATE ${KV_DIR}/.config 806 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
245 eend $? 807 eend $?
246 [ "$?" != 0 ] && die 808 [ "$?" != 0 ] && die
247 809
248 ebegin "checking ZLIB_DEFLATE" 810 ebegin "checking ZLIB_DEFLATE"
249 getfilevar_isbuiltin CONFIG_ZLIB_DEFLATE ${KV_DIR}/.config 811 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
250 eend $? 812 eend $?
251 [ "$?" != 0 ] && die 813 [ "$?" != 0 ] && die
252 814
253
254 local LINENO_START 815 local LINENO_START
255 local LINENO_END 816 local LINENO_END
256 local SYMBOLS 817 local SYMBOLS
257 local x 818 local x
258 819
259 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 820 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
260 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)" 821 LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
261 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START )) 822 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
262 (( LINENO_END = $LINENO_END - 1 )) 823 (( LINENO_END = $LINENO_END - 1 ))
263 SYMBOLS="$(head -n $LINENO_END ${KERNEL_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')" 824 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
264 825
265 # okay, now we have a list of symbols 826 # okay, now we have a list of symbols
266 # we need to check each one in turn, to see whether it is set or not 827 # we need to check each one in turn, to see whether it is set or not
267 for x in $SYMBOLS ; do 828 for x in $SYMBOLS ; do
268 if [ "${!x}" = "y" ]; then 829 if [ "${!x}" = "y" ]; then
269 # we have a winner! 830 # we have a winner!
270 einfo "${x} ensures zlib is linked into your kernel - excellent" 831 einfo "${x} ensures zlib is linked into your kernel - excellent"
271 return 0 832 return 0
272 fi 833 fi
273 done 834 done
274 835
275 eerror 836 eerror
276 eerror "This kernel module requires ZLIB library support." 837 eerror "This kernel module requires ZLIB library support."
277 eerror "You have enabled zlib support in your kernel, but haven't enabled" 838 eerror "You have enabled zlib support in your kernel, but haven't enabled"
278 eerror "enabled any option that will ensure that zlib is linked into your" 839 eerror "enabled any option that will ensure that zlib is linked into your"
279 eerror "kernel." 840 eerror "kernel."
289 eerror "Please remember to recompile and install your kernel, and reboot" 850 eerror "Please remember to recompile and install your kernel, and reboot"
290 eerror "into your new kernel before attempting to load this kernel module." 851 eerror "into your new kernel before attempting to load this kernel module."
291 852
292 die "Kernel doesn't include zlib support" 853 die "Kernel doesn't include zlib support"
293} 854}
855
856################################
857# Default pkg_setup
858# Also used when inheriting linux-mod to force a get_version call
859# @FUNCTION: linux-info_pkg_setup
860# @DESCRIPTION:
861# Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
862# to support the options specified in CONFIG_CHECK (if not null)
863linux-info_pkg_setup() {
864 linux-info_get_any_version
865
866 if kernel_is 2 4; then
867 if [ "$( gcc-major-version )" -eq "4" ] ; then
868 echo
869 ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
870 ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
871 echo
872 ewarn "Either switch to another gcc-version (via gcc-config) or use a"
873 ewarn "newer kernel that supports gcc-4."
874 echo
875 ewarn "Also be aware that bugreports about gcc-4 not working"
876 ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
877 echo
878 epause 10
879 fi
880 fi
881
882 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
883}

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