genkernel

   1 #!/bin/bash
   2 # $Id$
   3
   4 PATH="${PATH}:/sbin:/usr/sbin"
   5 GK_V='3.4.45'
   6
   7 # Set the default for TMPDIR.  May be modified by genkernel.conf or the
   8 # --tempdir command line option.
   9 TMPDIR='/var/tmp/genkernel'
  10
  11 TODEBUGCACHE=1 # Until an error occurs or LOGFILE is fully qualified.
  12
  13 small_die() {
  14   echo $1
  15   exit 1
  16 }
  17
  18 parse_opt() {
  19         case "$1" in
  20                 *\=*)
  21                         echo "$1" | cut -f2- -d=
  22                 ;;
  23         esac
  24 }
  25
  26 # We don't know where our config is, so we check for it, and default to using
  27 # /etc/genkernel.conf if nobody has specified one.
  28
  29 # NOTE: We are look for --config=... in a way that doesn't modify $@ since we access that again, later
  30 for (( i=1; i<=$# ; i=i+1 )); do
  31         eval arg="\$$i"
  32         [[ "${arg}" = --config=* ]] && CMD_GK_CONFIG=`parse_opt "${arg}"`
  33 done
  34
  35 # Pull in our configuration
  36 _GENKERNEL_CONF=${CMD_GK_CONFIG:-/etc/genkernel.conf}
  37 source "${_GENKERNEL_CONF}" || small_die "Could not read ${_GENKERNEL_CONF}"
  38
  39 # Start sourcing other scripts
  40 source ${GK_SHARE}/defaults/software.sh || small_die "Could not read ${GK_SHARE}/defaults/software.sh"
  41 source ${GK_SHARE}/gen_funcs.sh || small_die "Could not read ${GK_SHARE}/gen_funcs.sh"
  42 source ${GK_SHARE}/gen_cmdline.sh || gen_die "Could not read ${GK_SHARE}/gen_cmdline.sh"
  43 source ${GK_SHARE}/gen_arch.sh || gen_die "Could not read ${GK_SHARE}/gen_arch.sh"
  44 source ${GK_SHARE}/gen_determineargs.sh || gen_die "Could not read ${GK_SHARE}/gen_determineargs.sh"
  45 source ${GK_SHARE}/gen_compile.sh || gen_die "Could not read ${GK_SHARE}/gen_compile.sh"
  46 source ${GK_SHARE}/gen_configkernel.sh || gen_die "Could not read ${GK_SHARE}/gen_configkernel.sh"
  47 source ${GK_SHARE}/gen_initramfs.sh || gen_die "Could not read ${GK_SHARE}/gen_initramfs.sh"
  48 source ${GK_SHARE}/gen_moddeps.sh || gen_die "Could not read ${GK_SHARE}/gen_moddeps.sh"
  49 source ${GK_SHARE}/gen_package.sh || gen_die "Could not read ${GK_SHARE}/gen_package.sh"
  50 source ${GK_SHARE}/gen_bootloader.sh || gen_die "Could not read ${GK_SHARE}/gen_bootloader.sh"
  51
  52 TEMP=${TMPDIR}/$RANDOM.$RANDOM.$RANDOM.$$
  53
  54 trap_cleanup(){
  55         # Call exit code of 1 for failure
  56         cleanup
  57         exit 1
  58 }
  59
  60 cleanup(){
  61     if [ -n "$TEMP" -a -d "$TEMP" ]; then
  62         rm -rf "$TEMP"
  63     fi
  64
  65     if isTrue ${POSTCLEAR}
  66     then
  67             echo
  68             print_info 1 'RUNNING FINAL CACHE/TMP CLEANUP'
  69             print_info 1 "CACHE_DIR: ${CACHE_DIR}"
  70             CLEAR_CACHE_DIR='yes'
  71             setup_cache_dir
  72             echo
  73             print_info 1 "TMPDIR: ${TMPDIR}"
  74             clear_tmpdir
  75             fi
  76 }
  77
  78 trap trap_cleanup SIGHUP SIGQUIT SIGINT SIGTERM SIGKILL
  79 BUILD_KERNEL=0
  80 BUILD_RAMDISK=0
  81 BUILD_MODULES=0
  82
  83 # Parse all command line options...
  84 Options=$* # Save for later
  85 while [ $# -gt 0 ]
  86 do
  87         Option=$1; shift
  88         parse_cmdline $Option
  89 done
  90
  91 # Check if no action is specified...
  92 if [ "${BUILD_KERNEL}" = '0' -a "${BUILD_RAMDISK}" = '0' ]
  93 then
  94         usage
  95         exit 1
  96 fi
  97
  98 clear_log
  99 NORMAL=${GOOD} print_info 1 "Gentoo Linux Genkernel; Version ${GK_V}${NORMAL}"
 100 print_info 1 "Running with options: ${Options}"
 101 echo
 102
 103 # Set ${ARCH}
 104 get_official_arch
 105
 106 # Read arch-specific config
 107 print_info 1 "Using genkernel.conf from ${_GENKERNEL_CONF}"
 108 print_info 1 "Sourcing arch-specific config.sh from ${ARCH_CONFIG} .."
 109 source ${ARCH_CONFIG} || gen_die "Could not read ${ARCH_CONFIG}"
 110 _MODULES_LOAD=${GK_SHARE}/arch/${ARCH}/modules_load
 111 print_info 1 "Sourcing arch-specific modules_load from ${_MODULES_LOAD} .."
 112 source "${_MODULES_LOAD}" || gen_die "Could not read ${_MODULES_LOAD}"
 113 echo
 114
 115 # Merge modules_load from config
 116 for group_modules in ${!AMODULES_*}; do
 117         group="$(echo $group_modules | cut -d_ -f2)"
 118         eval cmodules="\$$group_modules"
 119         eval MODULES_${group}=\"\${MODULES_${group}} ${cmodules}\"
 120         print_info 1 "<config> Merged AMODULES_${group}:'${cmodules}' into MODULES_${group}"
 121 done
 122
 123
 124 # Based on genkernel.conf, arch-specific configs, and commandline options,
 125 # get the real arguments for usage...
 126
 127 determine_real_args
 128 determine_config_file
 129
 130 set_kernel_arch
 131
 132 [ ! -f "${TEMP}" ] && mkdir -p "${TEMP}"
 133
 134 setup_cache_dir
 135
 136 check_distfiles
 137
 138 dump_debugcache
 139
 140 NORMAL=${BOLD} print_info 1 "Linux Kernel ${BOLD}${KV}${NORMAL} for ${BOLD}${ARCH}${NORMAL}..."
 141 print_info 1 ".. with config file ${KERNEL_CONFIG}"
 142
 143 # Check BOOTDIR is mounted
 144 if ! isTrue ${CMD_INSTALL}
 145 then
 146         isTrue ${MOUNTBOOT} && print_info 2 'Skipping automatic mount of boot'
 147 else
 148         [[ -d ${BOOTDIR} ]] || gen_die "${BOOTDIR} is not a directory"
 149
 150         if ! egrep -q "[[:space:]]${BOOTDIR}[[:space:]]" /proc/mounts
 151         then
 152                 if egrep -q "^[^#].+[[:space:]]${BOOTDIR}[[:space:]]" /etc/fstab
 153                 then
 154                         if isTrue ${MOUNTBOOT}
 155                         then
 156                                 if ! mount ${BOOTDIR}
 157                                 then
 158                                         print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to mount ${BOOTDIR}!"
 159                                         echo
 160                                 else
 161                                         print_info 1 "mount: ${BOOTDIR} mounted successfully!"
 162                                 fi
 163                         else
 164                                 print_warning 1 "${BOLD}WARNING${NORMAL}: No mounted ${BOOTDIR} partition detected!"
 165                                 print_warning 1 "         Run ``mount ${BOOTDIR}`` to mount it!"
 166                                 echo
 167                         fi
 168                 fi
 169         elif isBootRO
 170         then
 171                 if isTrue ${MOUNTBOOT}
 172                 then
 173                         if ! mount -o remount,rw ${BOOTDIR}
 174                         then
 175                                 print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to remount ${BOOTDIR} RW!"
 176                                 echo
 177                         else
 178                                 print_info 1 "mount: ${BOOTDIR} remounted read/write successfully!"
 179                                 BOOTRW=1
 180                         fi
 181                 fi
 182         fi
 183 fi
 184
 185 ## Check whether another Genkernel is running
 186 #GENPIDS="`ps -C genkernel --no-headers -o pid | wc -l`"
 187 #if [ "${GENPIDS}" -gt '3' ]
 188 #then
 189 #       [ "${GENPIDS}" -gt '4' ] && EX='s'
 190 #       print_warning 1 "${BOLD}WARNING${NORMAL}: Another Genkernel instance is running under"
 191 #       print_warning 1 "         process ID${EX} " 0
 192 #       GENPIDS=`ps -C genkernel --no-headers -o pid`
 193 #       echo -n "${GENPIDS}" | sed -e "s/$$//; s/ /, /g"
 194 #       echo 'halting...'
 195 #       echo
 196 #       print_warning 1 'Running multiple genkernels on the same source tree will cause data loss!'
 197 #       print_info 1 "Press ^C to halt; ^D to continue [ ${BOLD}if${NORMAL} you know what you're doing! ]"
 198 #       echo
 199 #       CTEMP="${TEMP}"
 200 #       TEMP=${TMPDIR-/tmp}
 201 #       TEMP=${TEMP}/genkernel.$RANDOM.$RANDOM.$RANDOM.$$
 202 #       print_info 1 'thread: Running multiple genkernels may cause problems!'
 203 #       print_info 1 "thread: Temporary files reallocated to ${TEMP}..."
 204 #       echo
 205 #fi
 206
 207 KERNCACHE_IS_VALID=0
 208 if [ "${KERNCACHE}" != "" ]
 209 then
 210     gen_kerncache_is_valid
 211 fi
 212
 213 if [ ${BUILD_KERNEL} = '1' -a "${KERNCACHE_IS_VALID}" = '0' ]
 214 then
 215         # Configure kernel
 216         config_kernel
 217
 218         # Make prepare
 219         if [ "${ARCH_HAVENOPREPARE}" = '' ]
 220         then
 221                 compile_generic prepare kernel
 222         fi
 223
 224         # KV may have changed due to the configuration
 225         get_KV
 226
 227         compile_kernel
 228
 229         # Compile modules
 230         if [ "${BUILD_MODULES}" = '1' -a "${BUILD_STATIC}" = '0' ]
 231         then
 232                 compile_modules
 233         fi
 234
 235         if [ "${SAVE_CONFIG}" = '1' ]
 236         then
 237                 print_info 1 "Copying config for successful build to /etc/kernels/kernel-config-${ARCH}-${KV}"
 238                 [ ! -e '/etc/kernels' ] && mkdir -p /etc/kernels
 239                 cp "${KERNEL_OUTPUTDIR}/.config" "/etc/kernels/kernel-config-${ARCH}-${KV}" || \
 240                         print_warning "Unable to copy the kernel configuration file."
 241                         # Just a warning because ordinary users are not allowed to write in /etc
 242         fi
 243 fi
 244
 245 if isTrue "${CMD_INSTALL}"
 246 then
 247         if [ "${KERNCACHE}" != "" -a "${KERNCACHE_IS_VALID}" != "0" ]
 248         then
 249                 gen_kerncache_extract_kernel
 250         fi
 251 fi
 252
 253 if [ "${KERNCACHE}" != "" -a "${KERNCACHE_IS_VALID}" != "0" ]
 254 then
 255         [ "${BUILD_STATIC}" = '0' ] && gen_kerncache_extract_modules
 256         gen_kerncache_extract_config
 257 fi
 258
 259 # Run callback
 260 if [ "${CMD_CALLBACK}" != "" ]
 261 then
 262         print_info 1 "" 1 0
 263         print_info 1 "Preparing to run callback: \"${CMD_CALLBACK}\"" 0
 264
 265         CALLBACK_ESCAPE=0
 266         CALLBACK_COUNT=0
 267
 268         trap "CALLBACK_ESCAPE=1" TERM KILL INT QUIT ABRT
 269         while [[ "${CALLBACK_ESCAPE}" = '0' && ${CALLBACK_COUNT} -lt 5 ]]
 270         do
 271                 sleep 1; echo -n '.';
 272                 let CALLBACK_COUNT=${CALLBACK_COUNT}+1
 273         done
 274
 275         if [ "${CALLBACK_ESCAPE}" = '0' ]
 276         then
 277                 echo
 278                 echo
 279                 eval ${CMD_CALLBACK} | tee -a ${LOGFILE}
 280                 CMD_STATUS="${PIPESTATUS[0]}"
 281                 echo
 282                 print_info 1 "<<< Callback exit status: ${CMD_STATUS}"
 283                 [ "${CMD_STATUS}" != '0' ] && gen_die '--callback failed!'
 284         else
 285                 echo
 286                 print_info 1 ">>> Callback cancelled..."
 287         fi
 288         trap - TERM KILL INT QUIT ABRT
 289         print_info 1 "" 1 0
 290 fi
 291
 292 if [ "${BUILD_RAMDISK}" = '1' ]
 293 then
 294         if [ "${BUSYBOX}" = '1' ]
 295         then
 296                 # Compile Busybox
 297                 compile_busybox
 298         fi
 299
 300         if isTrue "${UNIONFS}"
 301         then
 302                 compile_unionfs_fuse
 303         fi
 304
 305         # Compile initramfs
 306         create_initramfs
 307 else
 308         print_info 1 'initrd: Not building since only the kernel was requested...'
 309 fi
 310
 311 if isTrue "${INTEGRATED_INITRAMFS}" #|| [ "${BUILD_KERNEL}" = '1' -a "${KERNCACHE_IS_VALID}" == "0" ]
 312 then
 313         # We build the kernel a second time to include the initramfs
 314         compile_kernel
 315 fi
 316
 317 [ "${KERNCACHE}" != "" ] && gen_kerncache
 318 [ "${MINKERNPACKAGE}" != '' ] && gen_minkernpackage
 319 [ "${MODULESPACKAGE}" != '' ] && gen_modulespackage
 320
 321 # Clean up...
 322 [ -n "${CTEMP}" ] && rm -rf "${TEMP}"
 323
 324 if [ "${BUILD_KERNEL}" = '1' ]
 325 then
 326         if isTrue "${CMD_INSTALL}"
 327         then
 328                 set_bootloader
 329         fi
 330         print_info 1 ''
 331         print_info 1 "Kernel compiled successfully!"
 332         print_info 1 ''
 333         print_info 1 'Required Kernel Parameters:'
 334         print_info 1 '    root=/dev/$ROOT'
 335         if [ "${BUILD_RAMDISK}" = '0' ]
 336         then
 337                 print_info 1 '    [ And "vga=0x317 splash=verbose" if you use a framebuffer ]'
 338                 print_info 1 ''
 339                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 340                 print_info 1 '    one specified in /etc/fstab'
 341         else
 342                 print_info 1 ''
 343                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 344                 print_info 1 '    one specified in /etc/fstab'
 345                 print_info 1 ''
 346                 print_info 1 "If you require Genkernel's hardware detection features; you MUST"
 347                 print_info 1 'tell your bootloader to use the provided INITRAMFS file.'
 348         fi
 349 fi
 350
 351 if [ "${BUILD_RAMDISK}" = '1' ]
 352 then
 353         echo
 354         print_warning 1 'WARNING... WARNING... WARNING...'
 355         print_warning 1 'Additional kernel cmdline arguments that *may* be required to boot properly...'
 356         [ "${SPLASH}" = '1' ] && print_warning 1 "add \"vga=791 splash=silent,theme:${SPLASH_THEME} console=tty1 quiet\" if you use a splash framebuffer ]"
 357         [ "${LVM}" = '1' ] && print_warning 1 'add "dolvm" for lvm support'
 358         [ "${DMRAID}" = '1' ] && print_warning 1 'add "dodmraid" for dmraid support'
 359         [ "${MDADM}" = '1' ] && print_warning 1 'add "domdadm" for RAID support'
 360         [ "${DMRAID}" = '1' ] && print_warning 1 '      or "dodmraid=<additional options>"'
 361         [ "${ZFS}" = '1' ] && print_warning 1 'add "dozfs" for ZFS volume management support'
 362         [ "${ZFS}" = '1' ] && print_warning 1 ' and either "root=ZFS" to use bootfs autodetection or "root=ZFS=<dataset>" to force booting from a specific dataset'
 363         [ "${ISCSI}" = '1' ] && print_warning 1 'add at least "iscsi_initiatorname=<initiator name> iscsi_target=<target name> and iscsi_address=<target ip>" for iscsi support'
 364
 365         if [[ "$(file --brief --mime-type "${KERNEL_CONFIG}")" == application/x-gzip ]]; then
 366                 # Support --kernel-config=/proc/config.gz, mainly
 367                 CONFGREP=zgrep
 368         else
 369                 CONFGREP=grep
 370         fi
 371
 372         if [ `${CONFGREP} 'CONFIG_EXT[0-9]_FS=' "${KERNEL_CONFIG}" | wc -l` -ge 2 ]; then
 373                 print_warning 1 'With support for several ext* filesystems available, it may be needed to'
 374                 print_warning 1 'add "rootfstype=ext3" or "rootfstype=ext4" to the list of boot parameters.'
 375         fi
 376
 377         unset CONFGREP
 378 fi
 379
 380 [ "${BOOTRW}" != '' ] && mount -o remount,ro ${BOOTDIR}
 381
 382 echo
 383 print_info 1 'Do NOT report kernel bugs as genkernel bugs unless your bug'
 384 print_info 1 'is about the default genkernel configuration...'
 385 print_info 1 ''
 386 print_info 1 'Make sure you have the latest ~arch genkernel before reporting bugs.'
 387
 388 #Final Cleanup
 389 cleanup