/[gentoo-x86]/eclass/linux-info.eclass
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Revision 1.3 Revision 1.8
1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 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 1.8 2004/12/06 18:33:10 johnm Exp $
4# 4#
5# This eclass provides functions for querying the installed kernel 5# This eclass provides functions for querying the installed kernel
6# source version, selected kernel options etc. 6# source version, selected kernel options etc.
7# 7#
8 8
9ECLASS=linux-info 9ECLASS=linux-info
10INHERITED="$INHERITED $ECLASS" 10INHERITED="$INHERITED $ECLASS"
11EXPORT_FUNCTIONS pkg_setup
11 12
12# Overwritable environment Var's 13# Overwritable environment Var's
13# --------------------------------------- 14# ---------------------------------------
14KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}" 15KERNEL_DIR="${KERNEL_DIR:-/usr/src/linux}"
15 16
16 17
18# Pulled from eutils as it might be more useful only being here since
19# very few ebuilds which dont use this eclass will ever ever use these functions
20set_arch_to_kernel() {
21 export PORTAGE_ARCH="${ARCH}"
22 case ${ARCH} in
23 x86) export ARCH="i386";;
24 amd64) export ARCH="x86_64";;
25 hppa) export ARCH="parisc";;
26 mips) export ARCH="mips";;
27 *) export ARCH="${ARCH}";;
28 esac
29}
30
31# set's ARCH back to what portage expects
32set_arch_to_portage() {
33 export ARCH="${PORTAGE_ARCH}"
34}
17 35
18# File Functions 36# File Functions
19# --------------------------------------- 37# ---------------------------------------
20 38
21# getfilevar accepts 2 vars as follows: 39# getfilevar accepts 2 vars as follows:
22# getfilevar <VARIABLE> <CONFIGFILE> 40# getfilevar <VARIABLE> <CONFIGFILE>
23 41
24getfilevar() { 42getfilevar() {
25local ERROR 43local ERROR workingdir basefname basedname xarch
26 ERROR=0 44 ERROR=0
27 45
28 [ -z "${1}" ] && ERROR=1 46 [ -z "${1}" ] && ERROR=1
29 [ -z "${2}" ] && ERROR=1
30 [ ! -f "${2}" ] && ERROR=1 47 [ ! -f "${2}" ] && ERROR=1
31 48
32 if [ "${ERROR}" = 1 ] 49 if [ "${ERROR}" = 1 ]
33 then 50 then
51 ebeep
52 echo -e "\n"
34 eerror "getfilevar requires 2 variables, with the second a valid file." 53 eerror "getfilevar requires 2 variables, with the second a valid file."
35 eerror " getfilevar <VARIABLE> <CONFIGFILE>" 54 eerror " getfilevar <VARIABLE> <CONFIGFILE>"
36 else 55 else
37 grep -e "^$1[= ]" $2 | sed 's: = :=:' | cut -d= -f2- 56 workingdir=${PWD}
57 basefname=$(basename ${2})
58 basedname=$(dirname ${2})
59 xarch=${ARCH}
60 unset ARCH
61
62 cd ${basedname}
63 echo -e "include ${basefname}\ne:\n\t@echo \$(${1})" | \
64 make -f - e 2>/dev/null
65 cd ${workingdir}
66
67 ARCH=${xarch}
38 fi 68 fi
39} 69}
40 70
41getfilevar_isset() { 71linux_chkconfig_present() {
42local RESULT 72local RESULT
43 RESULT="$(getfilevar ${1} ${2})" 73 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
44 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1 74 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
45} 75}
46 76
47getfilevar_ismodule() { 77linux_chkconfig_module() {
48local RESULT 78local RESULT
49 RESULT="$(getfilevar ${1} ${2})" 79 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
50 [ "${RESULT}" = "m" ] && return 0 || return 1 80 [ "${RESULT}" = "m" ] && return 0 || return 1
51} 81}
52 82
53getfilevar_isbuiltin() { 83linux_chkconfig_builtin() {
54local RESULT 84local RESULT
55 RESULT="$(getfilevar ${1} ${2})" 85 RESULT="$(getfilevar CONFIG_${1} ${KV_OUT_DIR}/.config)"
56 [ "${RESULT}" = "y" ] && return 0 || return 1 86 [ "${RESULT}" = "y" ] && return 0 || return 1
87}
88
89linux_chkconfig_string() {
90 getfilevar "CONFIG_${1}" "${KV_OUT_DIR}/.config"
57} 91}
58 92
59# Versioning Functions 93# Versioning Functions
60# --------------------------------------- 94# ---------------------------------------
61 95
95 fi 129 fi
96 return ${RESULT} 130 return ${RESULT}
97} 131}
98 132
99get_version() { 133get_version() {
134 local kbuild_output
135
100 # no need to execute this twice assuming KV_FULL is populated. 136 # no need to execute this twice assuming KV_FULL is populated.
101 # we can force by unsetting KV_FULL 137 # we can force by unsetting KV_FULL
102 if [ -n "${KV_FULL}" ] 138 [ -n "${KV_FULL}" ] && return
103 then
104 # Lets keep this quiet eh?
105 # einfo "\${KV_FULL} is already set. Not running get_version again"
106 return
107 fi
108 139
109 # if we dont know KV_FULL, then we need too. 140 # if we dont know KV_FULL, then we need too.
110 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR 141 # make sure KV_DIR isnt set since we need to work it out via KERNEL_DIR
111 unset KV_DIR 142 unset KV_DIR
112 143
116 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}" 147 [ -d "${KERNEL_DIR}" ] && KV_DIR="${KERNEL_DIR}"
117 148
118 if [ -z "${KV_DIR}" ] 149 if [ -z "${KV_DIR}" ]
119 then 150 then
120 eerror "Unable to find kernel sources at ${KERNEL_DIR}" 151 eerror "Unable to find kernel sources at ${KERNEL_DIR}"
121 die 152 einfo "This package requires Linux sources."
153 if [ "${KERNEL_DIR}" == "/usr/src/linux" ] ; then
154 einfo "Please make sure that ${KERNEL_DIR} points at your running kernel, "
155 einfo "(or the kernel you wish to build against)."
156 einfo "Alternatively, set the KERNEL_DIR environment variable to the kernel sources location"
157 else
158 einfo "Please ensure that the KERNEL_DIR environment variable points at full Linux sources of the kernel you wish to compile against."
122 fi 159 fi
160 die "Cannot locate Linux sources at ${KERNEL_DIR}"
161 fi
162
163 einfo "Found kernel source directory:"
164 einfo " ${KV_DIR}"
165
166 if [ ! -s "${KV_DIR}/Makefile" ]
167 then
168 eerror "Could not find a Makefile in the kernel source directory."
169 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
170 die "Makefile not found in ${KV_DIR}"
171 fi
172
173 if [ ! -s "${KV_DIR}/.config" ]
174 then
175 eerror "Could not find a usable .config in the kernel source directory."
176 eerror "Please ensure that ${KERNEL_DIR} points to a configured set of Linux sources"
177 die ".config not found in ${KV_DIR}"
178 fi
179
180 # OK so now we know our sources directory, but they might be using
181 # KBUILD_OUTPUT, and we need this for .config and localversions-*
182 # so we better find it eh?
183 # do we pass KBUILD_OUTPUT on the CLI?
184 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
185
186 # And if we didn't pass it, we can take a nosey in the Makefile
187 kbuild_output="$(getfilevar KBUILD_OUTPUT ${KV_DIR}/Makefile)"
188 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
123 189
124 # And contrary to existing functions I feel we shouldn't trust the 190 # And contrary to existing functions I feel we shouldn't trust the
125 # directory name to find version information as this seems insane. 191 # directory name to find version information as this seems insane.
126 # so we parse ${KV_DIR}/Makefile 192 # so we parse ${KV_DIR}/Makefile
127 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)" 193 KV_MAJOR="$(getfilevar VERSION ${KV_DIR}/Makefile)"
128 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)" 194 KV_MINOR="$(getfilevar PATCHLEVEL ${KV_DIR}/Makefile)"
129 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)" 195 KV_PATCH="$(getfilevar SUBLEVEL ${KV_DIR}/Makefile)"
130 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)" 196 KV_EXTRA="$(getfilevar EXTRAVERSION ${KV_DIR}/Makefile)"
197
198 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
199 then
200 eerror "Could not detect kernel version."
201 eerror "Please ensure that ${KERNEL_DIR} points to a complete set of Linux sources"
202 die "Could not parse version info from ${KV_DIR}/Makefile"
203 fi
204
131 # and in newer versions we can also pull LOCALVERSION if it is set. 205 # and in newer versions we can also pull LOCALVERSION if it is set.
132 KV_LOCAL="$(cat ${KV_DIR}/localversion* 2>/dev/null)$(getfilevar CONFIG_LOCALVERSION ${KV_DIR}/.config | sed 's:"::g')" 206 # but before we do this, we need to find if we use a different object directory.
207 # This *WILL* break if the user is using localversions, but we assume it was
208 # caught before this if they are.
209 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}" == "$(uname -r)" ] && \
210 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}.${KV_EXTRA}/build}"
211
212 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
213 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
214 if [ -n "${KV_OUT_DIR}" ];
215 then
216 einfo "Found kernel object directory:"
217 einfo " ${KV_OUT_DIR}"
218
219 KV_LOCAL="$(cat ${KV_OUT_DIR}/localversion* 2>/dev/null)"
220 fi
221 # and if we STILL haven't got it, then we better just set it to KV_DIR
222 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
223
224 KV_LOCAL="${KV_LOCAL}$(cat ${KV_DIR}/localversion* 2>/dev/null)"
225 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)"
226 KV_LOCAL="${KV_LOCAL//\"/}"
133 227
134 # And we should set KV_FULL to the full expanded version 228 # And we should set KV_FULL to the full expanded version
135 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 229 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
136 230
137 if [ -z "${KV_FULL}" ]
138 then
139 eerror "We are unable to find a usable kernel source tree in ${KV_DIR}"
140 eerror "Please check a kernel source exists in this directory."
141 die
142 else
143 einfo "Found kernel source directory:"
144 einfo " ${KV_DIR}"
145 einfo "with sources for kernel version:" 231 einfo "Found sources for kernel version:"
146 einfo " ${KV_FULL}" 232 einfo " ${KV_FULL}"
147 fi
148} 233}
149 234
150 235
151 236
152 237
155 240
156check_kernel_built() { 241check_kernel_built() {
157 # if we haven't determined the version yet, we need too. 242 # if we haven't determined the version yet, we need too.
158 get_version; 243 get_version;
159 244
160 if [ ! -f "${KV_DIR}/System.map" ] 245 if [ ! -f "${KV_OUT_DIR}/System.map" ]
161 then 246 then
162 eerror "These sources have not yet been compiled." 247 eerror "These sources have not yet been compiled."
163 eerror "We cannot build against an uncompiled tree." 248 eerror "We cannot build against an uncompiled tree."
164 eerror "To resolve this, please type the following:" 249 eerror "To resolve this, please type the following:"
165 eerror 250 eerror
174 259
175check_modules_supported() { 260check_modules_supported() {
176 # if we haven't determined the version yet, we need too. 261 # if we haven't determined the version yet, we need too.
177 get_version; 262 get_version;
178 263
179 getfilevar_isset CONFIG_MODULES ${KV_DIR}/.config 264 if ! linux_chkconfig_builtin "MODULES"
180 if [ "$?" != 0 ]
181 then 265 then
182 eerror "These sources do not support loading external modules." 266 eerror "These sources do not support loading external modules."
183 eerror "to be able to use this module please enable \"Loadable modules support\"" 267 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." 268 eerror "in your kernel, recompile and then try merging this module again."
185 die No support for external modules in ${KV_FUll} config 269 die "No support for external modules in ${KV_FULL} config"
186 fi 270 fi
187} 271}
188 272
189check_extra_config() { 273check_extra_config() {
190local config negate error 274local config negate error local_error
191 275
192 # if we haven't determined the version yet, we need too. 276 # if we haven't determined the version yet, we need too.
193 get_version; 277 get_version;
194 278
195 einfo "Checking for suitable kernel configuration options" 279 einfo "Checking for suitable kernel configuration options"
197 do 281 do
198 negate="${config:0:1}" 282 negate="${config:0:1}"
199 if [ "${negate}" == "!" ]; 283 if [ "${negate}" == "!" ];
200 then 284 then
201 config="${config:1}" 285 config="${config:1}"
202 if getfilevar_isset ${config} ${KV_DIR}/.config ; 286 if linux_chkconfig_present ${config}
203 then 287 then
288 local_error="${config}_ERROR"
289 local_error="${!local_error}"
290 [ -n "${local_error}" ] && eerror " ${local_error}" || \
204 eerror " ${config}:\tshould not be set in the kernel configuration, but it is." 291 eerror " CONFIG_${config}:\tshould not be set in the kernel configuration, but it is."
205 error=1 292 error=1
206 fi 293 fi
207 else 294 else
208 if ! getfilevar_isset ${config} ${KV_DIR}/.config ; 295 if ! linux_chkconfig_present ${config}
209 then 296 then
297 local_error="${config}_ERROR"
298 local_error="${!local_error}"
299 [ -n "${local_error}" ] && eerror " ${local_error}" || \
210 eerror " ${config}:\tshould be set in the kernel configuration, but isn't" 300 eerror " CONFIG_${config}:\tshould be set in the kernel configuration, but isn't"
211 error=1 301 error=1
212 fi 302 fi
213 fi 303 fi
214 done 304 done
215 305
216 if [ -n "${error}" ] ; 306 if [ -n "${error}" ] ;
217 then 307 then
218 eerror "Please check to make sure these options are set correctly." 308 eerror "Please check to make sure these options are set correctly."
219 eerror "Once you have satisfied these options, please try merging" 309 eerror "Once you have satisfied these options, please try merging"
220 eerror "this package again." 310 eerror "this package again."
221 die Incorrect kernel configuration options 311 die "Incorrect kernel configuration options"
222 fi 312 fi
223} 313}
224 314
225check_zlibinflate() { 315check_zlibinflate() {
226 # if we haven't determined the version yet, we need too. 316 # if we haven't determined the version yet, we need too.
258 348
259 LINENO_END="$(grep -n 'CONFIG_ZLIB_INFLATE y' ${KV_DIR}/lib/Config.in | cut -d : -f 1)" 349 LINENO_END="$(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)" 350 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 )) 351 (( LINENO_AMOUNT = $LINENO_END - $LINENO_START ))
262 (( LINENO_END = $LINENO_END - 1 )) 352 (( 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;')" 353 SYMBOLS="$(head -n $LINENO_END ${KV_DIR}/lib/Config.in | tail -n $LINENO_AMOUNT | sed -e 's/^.*\(CONFIG_[^\" ]*\).*/\1/g;')"
264 354
265 # okay, now we have a list of symbols 355 # 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 356 # we need to check each one in turn, to see whether it is set or not
267 for x in $SYMBOLS ; do 357 for x in $SYMBOLS ; do
268 if [ "${!x}" = "y" ]; then 358 if [ "${!x}" = "y" ]; then
289 eerror "Please remember to recompile and install your kernel, and reboot" 379 eerror "Please remember to recompile and install your kernel, and reboot"
290 eerror "into your new kernel before attempting to load this kernel module." 380 eerror "into your new kernel before attempting to load this kernel module."
291 381
292 die "Kernel doesn't include zlib support" 382 die "Kernel doesn't include zlib support"
293} 383}
384
385################################
386# Default pkg_setup
387# Also used when inheriting linux-mod to force a get_version call
388
389linux-info_pkg_setup() {
390 get_version;
391}

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