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Revision 1.94 - (hide annotations) (download)
Mon Jan 14 21:19:39 2013 UTC (19 months, 2 weeks ago) by vapier
Branch: MAIN
Changes since 1.93: +11 -16 lines
fix up style -- no tabs after `local`

1 robbat2 1.92 # Copyright 1999-2012 Gentoo Foundation
2 johnm 1.1 # Distributed under the terms of the GNU General Public License v2
3 vapier 1.94 # $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.93 2012/10/22 19:00:52 mpagano Exp $
4 johnm 1.10
5 dsd 1.56 # @ECLASS: linux-info.eclass
6     # @MAINTAINER:
7     # kernel-misc@gentoo.org
8 vapier 1.90 # @AUTHOR:
9     # Original author: John Mylchreest <johnm@gentoo.org>
10 dsd 1.56 # @BLURB: eclass used for accessing kernel related information
11     # @DESCRIPTION:
12     # This eclass is used as a central eclass for accessing kernel
13 robbat2 1.62 # related information for source or binary already installed.
14 dsd 1.56 # It is vital for linux-mod.eclass to function correctly, and is split
15     # out so that any ebuild behaviour "templates" are abstracted out
16     # using additional eclasses.
17 robbat2 1.62 #
18     # "kernel config" in this file means:
19     # The .config of the currently installed sources is used as the first
20     # preference, with a fall-back to bundled config (/proc/config.gz) if available.
21 robbat2 1.92 #
22     # Before using any of the config-handling functions in this eclass, you must
23     # ensure that one of the following functions has been called (in order of
24     # preference), otherwise you will get bugs like #364041):
25     # linux-info_pkg_setup
26     # linux-info_get_any_version
27     # get_version
28     # get_running_version
29 dsd 1.56
30 johnm 1.10 # A Couple of env vars are available to effect usage of this eclass
31     # These are as follows:
32 dsd 1.56
33     # @ECLASS-VARIABLE: KERNEL_DIR
34     # @DESCRIPTION:
35     # A string containing the directory of the target kernel sources. The default value is
36     # "/usr/src/linux"
37    
38     # @ECLASS-VARIABLE: CONFIG_CHECK
39     # @DESCRIPTION:
40     # A string containing a list of .config options to check for before
41     # proceeding with the install.
42     #
43     # e.g.: CONFIG_CHECK="MTRR"
44     #
45     # You can also check that an option doesn't exist by
46     # prepending it with an exclamation mark (!).
47     #
48     # e.g.: CONFIG_CHECK="!MTRR"
49     #
50 vapier 1.89 # To simply warn about a missing option, prepend a '~'.
51 robbat2 1.62 # It may be combined with '!'.
52     #
53     # In general, most checks should be non-fatal. The only time fatal checks should
54     # be used is for building kernel modules or cases that a compile will fail
55     # without the option.
56     #
57     # This is to allow usage of binary kernels, and minimal systems without kernel
58     # sources.
59 dsd 1.56
60     # @ECLASS-VARIABLE: ERROR_<CFG>
61     # @DESCRIPTION:
62     # A string containing the error message to display when the check against CONFIG_CHECK
63     # fails. <CFG> should reference the appropriate option used in CONFIG_CHECK.
64 swegener 1.29 #
65 dsd 1.56 # e.g.: ERROR_MTRR="MTRR exists in the .config but shouldn't!!"
66    
67     # @ECLASS-VARIABLE: KBUILD_OUTPUT
68     # @DESCRIPTION:
69     # A string passed on commandline, or set from the kernel makefile. It contains the directory
70     # which is to be used as the kernel object directory.
71 johnm 1.10
72     # There are also a couple of variables which are set by this, and shouldn't be
73     # set by hand. These are as follows:
74 dsd 1.56
75     # @ECLASS-VARIABLE: KV_FULL
76     # @DESCRIPTION:
77     # A read-only variable. It's a string containing the full kernel version. ie: 2.6.9-gentoo-johnm-r1
78    
79     # @ECLASS-VARIABLE: KV_MAJOR
80     # @DESCRIPTION:
81     # A read-only variable. It's an integer containing the kernel major version. ie: 2
82    
83     # @ECLASS-VARIABLE: KV_MINOR
84     # @DESCRIPTION:
85     # A read-only variable. It's an integer containing the kernel minor version. ie: 6
86    
87     # @ECLASS-VARIABLE: KV_PATCH
88     # @DESCRIPTION:
89     # A read-only variable. It's an integer containing the kernel patch version. ie: 9
90    
91     # @ECLASS-VARIABLE: KV_EXTRA
92     # @DESCRIPTION:
93     # A read-only variable. It's a string containing the kernel EXTRAVERSION. ie: -gentoo
94    
95     # @ECLASS-VARIABLE: KV_LOCAL
96     # @DESCRIPTION:
97     # A read-only variable. It's a string containing the kernel LOCALVERSION concatenation. ie: -johnm
98    
99     # @ECLASS-VARIABLE: KV_DIR
100     # @DESCRIPTION:
101     # A read-only variable. It's a string containing the kernel source directory, will be null if
102     # KERNEL_DIR is invalid.
103    
104     # @ECLASS-VARIABLE: KV_OUT_DIR
105     # @DESCRIPTION:
106     # A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
107     # KBUILD_OUTPUT is used. This should be used for referencing .config.
108 johnm 1.10
109 johnm 1.21 # And to ensure all the weirdness with crosscompile
110 johnm 1.23 inherit toolchain-funcs versionator
111 johnm 1.1
112 johnm 1.8 EXPORT_FUNCTIONS pkg_setup
113 johnm 1.1
114 robbat2 1.65 DEPEND=""
115     RDEPEND=""
116    
117 johnm 1.1 # Overwritable environment Var's
118     # ---------------------------------------
119 johnm 1.21 KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
120 johnm 1.1
121 johnm 1.7
122 johnm 1.16 # Bug fixes
123     # fix to bug #75034
124     case ${ARCH} in
125 swegener 1.29 ppc) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
126     ppc64) BUILD_FIXES="${BUILD_FIXES} TOUT=${T}/.tmp_gas_check";;
127 johnm 1.16 esac
128    
129 vapier 1.51 # @FUNCTION: set_arch_to_kernel
130     # @DESCRIPTION:
131     # Set the env ARCH to match what the kernel expects.
132     set_arch_to_kernel() { export ARCH=$(tc-arch-kernel); }
133     # @FUNCTION: set_arch_to_portage
134     # @DESCRIPTION:
135     # Set the env ARCH to match what portage expects.
136     set_arch_to_portage() { export ARCH=$(tc-arch); }
137 johnm 1.11
138     # qeinfo "Message"
139     # -------------------
140 johnm 1.21 # qeinfo is a quiet einfo call when EBUILD_PHASE
141 johnm 1.11 # should not have visible output.
142 johnm 1.21 qout() {
143     local outputmsg type
144     type=${1}
145     shift
146     outputmsg="${@}"
147 wolf31o2 1.26 case "${EBUILD_PHASE}" in
148     depend) unset outputmsg;;
149     clean) unset outputmsg;;
150     preinst) unset outputmsg;;
151     esac
152     [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
153 johnm 1.11 }
154    
155 johnm 1.21 qeinfo() { qout einfo "${@}" ; }
156 robbat2 1.82 qewarn() { qout ewarn "${@}" ; }
157 johnm 1.21 qeerror() { qout eerror "${@}" ; }
158 johnm 1.11
159 johnm 1.1 # File Functions
160     # ---------------------------------------
161    
162 dsd 1.56 # @FUNCTION: getfilevar
163     # @USAGE: variable configfile
164     # @RETURN: the value of the variable
165     # @DESCRIPTION:
166 robbat2 1.61 # It detects the value of the variable defined in the file configfile. This is
167     # done by including the configfile, and printing the variable with Make.
168     # It WILL break if your makefile has missing dependencies!
169 johnm 1.1 getfilevar() {
170 vapier 1.94 local ERROR basefname basedname myARCH="${ARCH}"
171 johnm 1.1 ERROR=0
172 johnm 1.16
173 johnm 1.1 [ -z "${1}" ] && ERROR=1
174     [ ! -f "${2}" ] && ERROR=1
175    
176     if [ "${ERROR}" = 1 ]
177     then
178 johnm 1.6 echo -e "\n"
179 johnm 1.1 eerror "getfilevar requires 2 variables, with the second a valid file."
180     eerror " getfilevar <VARIABLE> <CONFIGFILE>"
181     else
182 johnm 1.34 basefname="$(basename ${2})"
183     basedname="$(dirname ${2})"
184 johnm 1.6 unset ARCH
185 johnm 1.21
186 johnm 1.42 echo -e "e:\\n\\t@echo \$(${1})\\ninclude ${basefname}" | \
187 dsd 1.57 make -C "${basedname}" M="${S}" ${BUILD_FIXES} -s -f - 2>/dev/null
188 johnm 1.21
189     ARCH=${myARCH}
190 johnm 1.1 fi
191     }
192    
193 robbat2 1.61 # @FUNCTION: getfilevar_noexec
194     # @USAGE: variable configfile
195     # @RETURN: the value of the variable
196     # @DESCRIPTION:
197     # It detects the value of the variable defined in the file configfile.
198     # This is done with sed matching an expression only. If the variable is defined,
199     # you will run into problems. See getfilevar for those cases.
200     getfilevar_noexec() {
201 vapier 1.94 local ERROR basefname basedname mycat myARCH="${ARCH}"
202 robbat2 1.61 ERROR=0
203 robbat2 1.62 mycat='cat'
204 robbat2 1.61
205     [ -z "${1}" ] && ERROR=1
206     [ ! -f "${2}" ] && ERROR=1
207 robbat2 1.64 [ "${2%.gz}" != "${2}" ] && mycat='zcat'
208 robbat2 1.61
209     if [ "${ERROR}" = 1 ]
210     then
211     echo -e "\n"
212     eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
213     eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
214     else
215 robbat2 1.62 ${mycat} "${2}" | \
216 robbat2 1.61 sed -n \
217 vapier 1.89 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
218 robbat2 1.61 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
219     s,[[:space:]]*\$,,g ;
220     p
221 robbat2 1.62 }"
222 robbat2 1.61 fi
223     }
224    
225 vapier 1.90 # @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
226     # @INTERNAL
227 robbat2 1.75 # @DESCRIPTION:
228     # This is only set if one of the linux_config_*exists functions has been called.
229     # We use it for a QA warning that the check for a config has not been performed,
230     # as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
231     # config is available at all.
232     _LINUX_CONFIG_EXISTS_DONE=
233    
234     linux_config_qa_check() {
235 robbat2 1.76 local f="$1"
236 robbat2 1.75 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
237 robbat2 1.76 ewarn "QA: You called $f before any linux_config_exists!"
238 cardoe 1.87 ewarn "QA: The return value of $f will NOT guaranteed later!"
239 robbat2 1.75 fi
240     }
241 dsd 1.53
242 robbat2 1.62 # @FUNCTION: linux_config_src_exists
243     # @RETURN: true or false
244     # @DESCRIPTION:
245     # It returns true if .config exists in a build directory otherwise false
246     linux_config_src_exists() {
247 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
248 robbat2 1.62 [ -s "${KV_OUT_DIR}/.config" ]
249     }
250    
251     # @FUNCTION: linux_config_bin_exists
252     # @RETURN: true or false
253     # @DESCRIPTION:
254     # It returns true if .config exists in /proc, otherwise false
255     linux_config_bin_exists() {
256 robbat2 1.75 export _LINUX_CONFIG_EXISTS_DONE=1
257 robbat2 1.79 [ -s "/proc/config.gz" ]
258 robbat2 1.62 }
259    
260 dsd 1.56 # @FUNCTION: linux_config_exists
261     # @RETURN: true or false
262     # @DESCRIPTION:
263     # It returns true if .config exists otherwise false
264 robbat2 1.62 #
265     # This function MUST be checked before using any of the linux_chkconfig_*
266     # functions.
267 dsd 1.53 linux_config_exists() {
268 robbat2 1.62 linux_config_src_exists || linux_config_bin_exists
269 dsd 1.53 }
270    
271 dsd 1.56 # @FUNCTION: require_configured_kernel
272     # @DESCRIPTION:
273     # This function verifies that the current kernel is configured (it checks against the existence of .config)
274     # otherwise it dies.
275 dsd 1.53 require_configured_kernel() {
276 robbat2 1.62 if ! linux_config_src_exists; then
277 dsd 1.53 qeerror "Could not find a usable .config in the kernel source directory."
278     qeerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources."
279     qeerror "If you are using KBUILD_OUTPUT, please set the environment var so that"
280     qeerror "it points to the necessary object directory so that it might find .config."
281     die "Kernel not configured; no .config found in ${KV_OUT_DIR}"
282     fi
283     }
284    
285 dsd 1.56 # @FUNCTION: linux_chkconfig_present
286     # @USAGE: option
287     # @RETURN: true or false
288     # @DESCRIPTION:
289 loki_val 1.59 # It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
290 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
291     # MUST call linux_config_exists first.
292 johnm 1.7 linux_chkconfig_present() {
293 robbat2 1.76 linux_config_qa_check linux_chkconfig_present
294 vapier 1.94 local RESULT config
295 robbat2 1.62 config="${KV_OUT_DIR}/.config"
296     [ ! -f "${config}" ] && config="/proc/config.gz"
297     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
298 johnm 1.1 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
299     }
300    
301 dsd 1.56 # @FUNCTION: linux_chkconfig_module
302     # @USAGE: option
303     # @RETURN: true or false
304     # @DESCRIPTION:
305     # It checks that CONFIG_<option>=m is present in the current kernel .config
306 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
307     # MUST call linux_config_exists first.
308 johnm 1.7 linux_chkconfig_module() {
309 robbat2 1.76 linux_config_qa_check linux_chkconfig_module
310 vapier 1.94 local RESULT config
311 robbat2 1.62 config="${KV_OUT_DIR}/.config"
312     [ ! -f "${config}" ] && config="/proc/config.gz"
313     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
314 johnm 1.1 [ "${RESULT}" = "m" ] && return 0 || return 1
315     }
316    
317 dsd 1.56 # @FUNCTION: linux_chkconfig_builtin
318     # @USAGE: option
319     # @RETURN: true or false
320     # @DESCRIPTION:
321     # It checks that CONFIG_<option>=y is present in the current kernel .config
322 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
323     # MUST call linux_config_exists first.
324 johnm 1.7 linux_chkconfig_builtin() {
325 robbat2 1.76 linux_config_qa_check linux_chkconfig_builtin
326 vapier 1.94 localRESULT config
327 robbat2 1.62 config="${KV_OUT_DIR}/.config"
328     [ ! -f "${config}" ] && config="/proc/config.gz"
329     RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
330 johnm 1.1 [ "${RESULT}" = "y" ] && return 0 || return 1
331     }
332    
333 dsd 1.56 # @FUNCTION: linux_chkconfig_string
334     # @USAGE: option
335     # @RETURN: CONFIG_<option>
336     # @DESCRIPTION:
337     # It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
338 robbat2 1.62 # If linux_config_exists returns false, the results of this are UNDEFINED. You
339     # MUST call linux_config_exists first.
340 johnm 1.7 linux_chkconfig_string() {
341 robbat2 1.76 linux_config_qa_check linux_chkconfig_string
342 robbat2 1.62 local config
343     config="${KV_OUT_DIR}/.config"
344     [ ! -f "${config}" ] && config="/proc/config.gz"
345     getfilevar_noexec "CONFIG_${1}" "${config}"
346 johnm 1.7 }
347    
348 johnm 1.1 # Versioning Functions
349     # ---------------------------------------
350    
351 dsd 1.56 # @FUNCTION: kernel_is
352     # @USAGE: [-lt -gt -le -ge -eq] major_number [minor_number patch_number]
353     # @RETURN: true or false
354     # @DESCRIPTION:
355     # It returns true when the current kernel version satisfies the comparison against the passed version.
356     # -eq is the default comparison.
357 johnm 1.1 #
358 dsd 1.56 # @CODE
359 johnm 1.1 # For Example where KV = 2.6.9
360 dsd 1.56 # kernel_is 2 4 returns false
361     # kernel_is 2 returns true
362     # kernel_is 2 6 returns true
363     # kernel_is 2 6 8 returns false
364     # kernel_is 2 6 9 returns true
365     # @CODE
366    
367 vapier 1.91 # Note: duplicated in kernel-2.eclass
368 johnm 1.1 kernel_is() {
369 dsd 1.53 # if we haven't determined the version yet, we need to.
370 robbat2 1.69 linux-info_get_any_version
371    
372 vapier 1.91 # Now we can continue
373     local operator test value
374 johnm 1.23
375 vapier 1.91 case ${1#-} in
376     lt) operator="-lt"; shift;;
377     gt) operator="-gt"; shift;;
378     le) operator="-le"; shift;;
379     ge) operator="-ge"; shift;;
380     eq) operator="-eq"; shift;;
381     *) operator="-eq";;
382 johnm 1.23 esac
383 vapier 1.91 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
384 johnm 1.23
385 vapier 1.91 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
386     : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
387     [ ${test} ${operator} ${value} ]
388 johnm 1.1 }
389    
390 johnm 1.30 get_localversion() {
391     local lv_list i x
392    
393     # ignore files with ~ in it.
394     for i in $(ls ${1}/localversion* 2>/dev/null); do
395     [[ -n ${i//*~*} ]] && lv_list="${lv_list} ${i}"
396     done
397    
398     for i in ${lv_list}; do
399     x="${x}$(<${i})"
400     done
401     x=${x/ /}
402     echo ${x}
403     }
404    
405 robbat2 1.83 # Check if the Makefile is valid for direct parsing.
406     # Check status results:
407     # - PASS, use 'getfilevar' to extract values
408     # - FAIL, use 'getfilevar_noexec' to extract values
409     # The check may fail if:
410     # - make is not present
411     # - corruption exists in the kernel makefile
412     get_makefile_extract_function() {
413     local a='' b='' mkfunc='getfilevar'
414     a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
415     b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
416     [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
417     echo "${mkfunc}"
418     }
419    
420 robbat2 1.63 # internal variable, so we know to only print the warning once
421     get_version_warning_done=
422    
423 dsd 1.56 # @FUNCTION: get_version
424     # @DESCRIPTION:
425     # It gets the version of the kernel inside KERNEL_DIR and populates the KV_FULL variable
426     # (if KV_FULL is already set it does nothing).
427     #
428     # The kernel version variables (KV_MAJOR, KV_MINOR, KV_PATCH, KV_EXTRA and KV_LOCAL) are also set.
429     #
430     # The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
431     # KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
432     # symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
433 johnm 1.1 get_version() {
434 robbat2 1.86 local kbuild_output mkfunc tmplocal
435 swegener 1.29
436 johnm 1.1 # no need to execute this twice assuming KV_FULL is populated.
437     # we can force by unsetting KV_FULL
438 johnm 1.19 [ -n "${KV_FULL}" ] && return 0
439 johnm 1.1
440     # if we dont know KV_FULL, then we need too.
441     # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
442     unset KV_DIR
443    
444     # KV_DIR will contain the full path to the sources directory we should use
445 robbat2 1.63 [ -z "${get_version_warning_done}" ] && \
446 johnm 1.11 qeinfo "Determining the location of the kernel source code"
447 johnm 1.1 [ -h "${KERNEL_DIR}" ] && KV_DIR="$(readlink -f ${KERNEL_DIR})"
448     [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
449 swegener 1.29
450 johnm 1.1 if [ -z "${KV_DIR}" ]
451     then
452 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
453     get_version_warning_done=1
454     qeerror "Unable to find kernel sources at ${KERNEL_DIR}"
455     #qeinfo "This package requires Linux sources."
456     if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
457     qeinfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
458     qeinfo "(or the kernel you wish to build against)."
459     qeinfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
460     else
461     qeinfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
462     fi
463 johnm 1.7 fi
464 johnm 1.19 return 1
465 johnm 1.7 fi
466    
467 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
468     qeinfo "Found kernel source directory:"
469     qeinfo " ${KV_DIR}"
470     fi
471 johnm 1.7
472     if [ ! -s "${KV_DIR}/Makefile" ]
473     then
474 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
475     get_version_warning_done=1
476     qeerror "Could not find a Makefile in the kernel source directory."
477     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
478     fi
479 johnm 1.19 return 1
480 johnm 1.7 fi
481 swegener 1.29
482 johnm 1.4 # OK so now we know our sources directory, but they might be using
483     # KBUILD_OUTPUT, and we need this for .config and localversions-*
484     # so we better find it eh?
485     # do we pass KBUILD_OUTPUT on the CLI?
486     OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
487 swegener 1.29
488 robbat2 1.78 # keep track of it
489     KERNEL_MAKEFILE="${KV_DIR}/Makefile"
490 vapier 1.89
491 robbat2 1.83 # Decide the function used to extract makefile variables.
492     mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
493 robbat2 1.78
494 johnm 1.6 # And if we didn't pass it, we can take a nosey in the Makefile
495 robbat2 1.78 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
496 johnm 1.4 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
497 swegener 1.29
498 johnm 1.1 # And contrary to existing functions I feel we shouldn't trust the
499     # directory name to find version information as this seems insane.
500 robbat2 1.78 # so we parse ${KERNEL_MAKEFILE}
501     KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
502     KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
503     KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
504     KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
505 swegener 1.29
506 johnm 1.7 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
507     then
508 robbat2 1.63 if [ -z "${get_version_warning_done}" ]; then
509     get_version_warning_done=1
510     qeerror "Could not detect kernel version."
511     qeerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources."
512     fi
513 johnm 1.19 return 1
514 johnm 1.7 fi
515 swegener 1.29
516 johnm 1.1 # and in newer versions we can also pull LOCALVERSION if it is set.
517 johnm 1.4 # but before we do this, we need to find if we use a different object directory.
518     # This *WILL* break if the user is using localversions, but we assume it was
519     # caught before this if they are.
520 robbat2 1.81 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
521 johnm 1.4
522     [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
523     [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
524     if [ -n "${KV_OUT_DIR}" ];
525     then
526 johnm 1.11 qeinfo "Found kernel object directory:"
527     qeinfo " ${KV_OUT_DIR}"
528 johnm 1.4 fi
529 johnm 1.41 # and if we STILL have not got it, then we better just set it to KV_DIR
530 johnm 1.4 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
531 johnm 1.21
532 robbat2 1.86 # Grab the kernel release from the output directory.
533     # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
534     # this function.
535     if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
536     KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
537     elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
538     KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
539     else
540     KV_LOCAL=
541     fi
542 robbat2 1.85
543 robbat2 1.86 # KV_LOCAL currently contains the full release; discard the first bits.
544     tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
545 dsd 1.53
546 robbat2 1.86 # If the updated local version was not changed, the tree is not prepared.
547     # Clear out KV_LOCAL in that case.
548     # TODO: this does not detect a change in the localversion part between
549     # kernel.release and the value that would be generated.
550     if [ "$KV_LOCAL" = "$tmplocal" ]; then
551     KV_LOCAL=
552 robbat2 1.85 else
553 robbat2 1.86 KV_LOCAL=$tmplocal
554 johnm 1.41 fi
555    
556 johnm 1.1 # And we should set KV_FULL to the full expanded version
557     KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
558 johnm 1.21
559 johnm 1.11 qeinfo "Found sources for kernel version:"
560     qeinfo " ${KV_FULL}"
561 johnm 1.21
562 johnm 1.19 return 0
563 johnm 1.1 }
564    
565 dsd 1.56 # @FUNCTION: get_running_version
566     # @DESCRIPTION:
567     # It gets the version of the current running kernel and the result is the same as get_version() if the
568     # function can find the sources.
569 johnm 1.23 get_running_version() {
570     KV_FULL=$(uname -r)
571 johnm 1.1
572 abcd 1.84 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
573     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
574     KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
575     unset KV_FULL
576     get_version
577     return $?
578     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
579 johnm 1.23 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
580     unset KV_FULL
581     get_version
582     return $?
583     elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
584     KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
585     unset KV_FULL
586     get_version
587     return $?
588     else
589     KV_MAJOR=$(get_version_component_range 1 ${KV_FULL})
590     KV_MINOR=$(get_version_component_range 2 ${KV_FULL})
591 flameeyes 1.88 KV_PATCH=$(get_version_component_range 3 ${KV_FULL})
592 johnm 1.23 KV_PATCH=${KV_PATCH//-*}
593 flameeyes 1.88 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}}"
594 johnm 1.23 fi
595     return 0
596     }
597 johnm 1.1
598 robbat2 1.66 # This next function is named with the eclass prefix to avoid conflicts with
599     # some old versionator-like eclass functions.
600    
601     # @FUNCTION: linux-info_get_any_version
602     # @DESCRIPTION:
603     # This attempts to find the version of the sources, and otherwise falls back to
604     # the version of the running kernel.
605     linux-info_get_any_version() {
606 maekke 1.73 get_version
607 robbat2 1.67 if [[ $? -ne 0 ]]; then
608 robbat2 1.66 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
609 maekke 1.73 get_running_version
610 robbat2 1.66 fi
611     }
612    
613 johnm 1.1
614     # ebuild check functions
615     # ---------------------------------------
616    
617 dsd 1.56 # @FUNCTION: check_kernel_built
618     # @DESCRIPTION:
619     # This function verifies that the current kernel sources have been already prepared otherwise it dies.
620 johnm 1.1 check_kernel_built() {
621 dsd 1.53 # if we haven't determined the version yet, we need to
622 dsd 1.54 require_configured_kernel
623 dsd 1.53 get_version
624 swegener 1.29
625 mpagano 1.93 local versionh_path
626     if kernel_is -ge 3 7; then
627     versionh_path="include/generated/uapi/linux/version.h"
628     else
629     versionh_path="include/linux/version.h"
630     fi
631    
632     if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
633 johnm 1.1 then
634 johnm 1.16 eerror "These sources have not yet been prepared."
635     eerror "We cannot build against an unprepared tree."
636 johnm 1.1 eerror "To resolve this, please type the following:"
637     eerror
638     eerror "# cd ${KV_DIR}"
639     eerror "# make oldconfig"
640 johnm 1.16 eerror "# make modules_prepare"
641 johnm 1.1 eerror
642     eerror "Then please try merging this module again."
643     die "Kernel sources need compiling first"
644     fi
645     }
646    
647 dsd 1.56 # @FUNCTION: check_modules_supported
648     # @DESCRIPTION:
649     # This function verifies that the current kernel support modules (it checks CONFIG_MODULES=y) otherwise it dies.
650 johnm 1.1 check_modules_supported() {
651     # if we haven't determined the version yet, we need too.
652 dsd 1.53 require_configured_kernel
653     get_version
654 swegener 1.29
655 vapier 1.94 if ! linux_chkconfig_builtin "MODULES"; then
656 johnm 1.1 eerror "These sources do not support loading external modules."
657     eerror "to be able to use this module please enable \"Loadable modules support\""
658     eerror "in your kernel, recompile and then try merging this module again."
659 johnm 1.7 die "No support for external modules in ${KV_FULL} config"
660 johnm 1.3 fi
661     }
662    
663 dsd 1.56 # @FUNCTION: check_extra_config
664     # @DESCRIPTION:
665     # It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
666     # the prefix ~ is not used) doesn't satisfy the directive.
667 johnm 1.3 check_extra_config() {
668 vapier 1.94 local config negate die error reworkmodulenames
669     local soft_errors_count=0 hard_errors_count=0 config_required=0
670 robbat2 1.75 # store the value of the QA check, because otherwise we won't catch usages
671     # after if check_extra_config is called AND other direct calls are done
672     # later.
673 vapier 1.94 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
674 dsd 1.53
675 dsd 1.55 # if we haven't determined the version yet, we need to
676 robbat2 1.70 linux-info_get_any_version
677 dsd 1.55
678 dsd 1.53 # Determine if we really need a .config. The only time when we don't need
679     # one is when all of the CONFIG_CHECK options are prefixed with "~".
680 vapier 1.94 for config in ${CONFIG_CHECK}; do
681 dsd 1.53 if [[ "${config:0:1}" != "~" ]]; then
682     config_required=1
683     break
684     fi
685     done
686    
687     if [[ ${config_required} == 0 ]]; then
688     # In the case where we don't require a .config, we can now bail out
689     # if the user has no .config as there is nothing to do. Otherwise
690     # code later will cause a failure due to missing .config.
691 robbat2 1.79 if ! linux_config_exists; then
692 robbat2 1.60 ewarn "Unable to check for the following kernel config options due"
693 robbat2 1.64 ewarn "to absence of any configured kernel sources or compiled"
694     ewarn "config:"
695 robbat2 1.60 for config in ${CONFIG_CHECK}; do
696 robbat2 1.77 local_error="ERROR_${config#\~}"
697     msg="${!local_error}"
698     if [[ "x${msg}" == "x" ]]; then
699     local_error="WARNING_${config#\~}"
700     msg="${!local_error}"
701     fi
702     ewarn " - ${config#\~}${msg:+ - }${msg}"
703 robbat2 1.60 done
704     ewarn "You're on your own to make sure they are set if needed."
705 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
706 dsd 1.53 return 0
707     fi
708     else
709 robbat2 1.79 require_configured_kernel
710 dsd 1.53 fi
711 johnm 1.3
712 mrness 1.45 einfo "Checking for suitable kernel configuration options..."
713 maekke 1.58
714 johnm 1.3 for config in ${CONFIG_CHECK}
715     do
716 johnm 1.31 # if we specify any fatal, ensure we honor them
717     die=1
718     error=0
719     negate=0
720     reworkmodulenames=0
721    
722 dsd 1.53 if [[ ${config:0:1} == "~" ]]; then
723 mrness 1.45 die=0
724 johnm 1.31 config=${config:1}
725 dsd 1.53 elif [[ ${config:0:1} == "@" ]]; then
726 mrness 1.45 die=0
727 johnm 1.31 reworkmodulenames=1
728     config=${config:1}
729     fi
730 dsd 1.53 if [[ ${config:0:1} == "!" ]]; then
731 mrness 1.45 negate=1
732 johnm 1.44 config=${config:1}
733     fi
734 johnm 1.17
735 johnm 1.31 if [[ ${negate} == 1 ]]; then
736     linux_chkconfig_present ${config} && error=2
737     elif [[ ${reworkmodulenames} == 1 ]]; then
738 mrness 1.45 local temp_config="${config//*:}" i n
739 johnm 1.17 config="${config//:*}"
740 johnm 1.31 if linux_chkconfig_present ${config}; then
741     for i in ${MODULE_NAMES}; do
742 johnm 1.17 n="${i//${temp_config}}"
743 dsd 1.38 [[ -z ${n//\(*} ]] && \
744 johnm 1.31 MODULE_IGNORE="${MODULE_IGNORE} ${temp_config}"
745 johnm 1.17 done
746 johnm 1.31 error=2
747 johnm 1.17 fi
748 johnm 1.3 else
749 johnm 1.31 linux_chkconfig_present ${config} || error=1
750     fi
751    
752 mrness 1.45 if [[ ${error} > 0 ]]; then
753     local report_func="eerror" local_error
754     local_error="ERROR_${config}"
755     local_error="${!local_error}"
756    
757     if [[ -z "${local_error}" ]]; then
758     # using old, deprecated format.
759     local_error="${config}_ERROR"
760     local_error="${!local_error}"
761     fi
762     if [[ ${die} == 0 && -z "${local_error}" ]]; then
763     #soft errors can be warnings
764     local_error="WARNING_${config}"
765 johnm 1.7 local_error="${!local_error}"
766 mrness 1.45 if [[ -n "${local_error}" ]] ; then
767     report_func="ewarn"
768 johnm 1.44 fi
769 mrness 1.45 fi
770 johnm 1.44
771 mrness 1.45 if [[ -z "${local_error}" ]]; then
772     [[ ${error} == 1 ]] \
773     && local_error="is not set when it should be." \
774     || local_error="should not be set. But it is."
775     local_error="CONFIG_${config}:\t ${local_error}"
776     fi
777     if [[ ${die} == 0 ]]; then
778     ${report_func} " ${local_error}"
779     soft_errors_count=$[soft_errors_count + 1]
780     else
781     ${report_func} " ${local_error}"
782     hard_errors_count=$[hard_errors_count + 1]
783 johnm 1.3 fi
784     fi
785     done
786    
787 mrness 1.45 if [[ ${hard_errors_count} > 0 ]]; then
788 johnm 1.3 eerror "Please check to make sure these options are set correctly."
789 johnm 1.31 eerror "Failure to do so may cause unexpected problems."
790 mrness 1.45 eerror "Once you have satisfied these options, please try merging"
791     eerror "this package again."
792 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
793 mrness 1.45 die "Incorrect kernel configuration options"
794     elif [[ ${soft_errors_count} > 0 ]]; then
795     ewarn "Please check to make sure these options are set correctly."
796     ewarn "Failure to do so may cause unexpected problems."
797     else
798     eend 0
799 johnm 1.1 fi
800 robbat2 1.75 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
801 johnm 1.1 }
802    
803     check_zlibinflate() {
804 dsd 1.53 # if we haven't determined the version yet, we need to
805     require_configured_kernel
806     get_version
807 swegener 1.29
808 johnm 1.1 # although I restructured this code - I really really really dont support it!
809    
810     # bug #27882 - zlib routines are only linked into the kernel
811     # if something compiled into the kernel calls them
812     #
813     # plus, for the cloop module, it appears that there's no way
814     # to get cloop.o to include a static zlib if CONFIG_MODVERSIONS
815     # is on
816 swegener 1.29
817     local INFLATE
818     local DEFLATE
819 johnm 1.1
820     einfo "Determining the usability of ZLIB_INFLATE support in your kernel"
821 swegener 1.29
822 johnm 1.1 ebegin "checking ZLIB_INFLATE"
823 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_INFLATE
824 johnm 1.1 eend $?
825     [ "$?" != 0 ] && die
826 swegener 1.29
827 johnm 1.1 ebegin "checking ZLIB_DEFLATE"
828 robbat2 1.61 linux_chkconfig_builtin CONFIG_ZLIB_DEFLATE
829 johnm 1.1 eend $?
830     [ "$?" != 0 ] && die
831 swegener 1.29
832 johnm 1.1 local LINENO_START
833     local LINENO_END
834     local SYMBOLS
835     local x
836 swegener 1.29
837 johnm 1.1 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)"
838     LINENO_START="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | grep -n 'if \[' | tail -n 1 | cut -d : -f 1)"
839     (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
840     (( LINENO_END = $LINENO_END - 1 ))
841 johnm 1.4 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
842 johnm 1.1
843     # okay, now we have a list of symbols
844     # we need to check each one in turn, to see whether it is set or not
845     for x in $SYMBOLS ; do
846     if [ "${!x}" = "y" ]; then
847     # we have a winner!
848     einfo "${x} ensures zlib is linked into your kernel - excellent"
849     return 0
850     fi
851     done
852 swegener 1.29
853 johnm 1.1 eerror
854     eerror "This kernel module requires ZLIB library support."
855     eerror "You have enabled zlib support in your kernel, but haven't enabled"
856     eerror "enabled any option that will ensure that zlib is linked into your"
857     eerror "kernel."
858     eerror
859     eerror "Please ensure that you enable at least one of these options:"
860     eerror
861    
862     for x in $SYMBOLS ; do
863     eerror " * $x"
864     done
865    
866     eerror
867     eerror "Please remember to recompile and install your kernel, and reboot"
868     eerror "into your new kernel before attempting to load this kernel module."
869    
870     die "Kernel doesn't include zlib support"
871     }
872 johnm 1.8
873     ################################
874     # Default pkg_setup
875     # Also used when inheriting linux-mod to force a get_version call
876 dsd 1.56 # @FUNCTION: linux-info_pkg_setup
877     # @DESCRIPTION:
878     # Force a get_version() call when inherited from linux-mod.eclass and then check if the kernel is configured
879     # to support the options specified in CONFIG_CHECK (if not null)
880 johnm 1.8 linux-info_pkg_setup() {
881 robbat2 1.66 linux-info_get_any_version
882 phreak 1.48
883     if kernel_is 2 4; then
884     if [ "$( gcc-major-version )" -eq "4" ] ; then
885     echo
886     ewarn "Be warned !! >=sys-devel/gcc-4.0.0 isn't supported with"
887     ewarn "linux-2.4 (or modules building against a linux-2.4 kernel)!"
888     echo
889     ewarn "Either switch to another gcc-version (via gcc-config) or use a"
890     ewarn "newer kernel that supports gcc-4."
891     echo
892     ewarn "Also be aware that bugreports about gcc-4 not working"
893     ewarn "with linux-2.4 based ebuilds will be closed as INVALID!"
894     echo
895     epause 10
896     fi
897     fi
898    
899 johnm 1.10 [ -n "${CONFIG_CHECK}" ] && check_extra_config;
900 johnm 1.8 }

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