genkernel

   1 #!/bin/bash
   2 # $Id$
   3
   4 PATH="${PATH}:/sbin:/usr/sbin"
   5 GK_V='3.4.40'
   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 "$1" | cut -f2- -d=
  22                 ;;
  23         esac
  24 }
  25
  26 # We don't know where our config is, so we check for it, and default to using
  27 # /etc/genkernel.conf if nobody has specified one.
  28 case "$*" in
  29         --config=*)
  30                 CMD_GK_CONFIG=`parse_opt "$*"`
  31         ;;
  32 esac
  33
  34 # Pull in our configuration
  35 _GENKERNEL_CONF=${CMD_GK_CONFIG:-/etc/genkernel.conf}
  36 source "${_GENKERNEL_CONF}" || small_die "Could not read ${_GENKERNEL_CONF}"
  37
  38 # Start sourcing other scripts
  39 source ${GK_SHARE}/gen_funcs.sh || small_die "Could not read ${GK_SHARE}/gen_funcs.sh"
  40 source ${GK_SHARE}/gen_cmdline.sh || gen_die "Could not read ${GK_SHARE}/gen_cmdline.sh"
  41 source ${GK_SHARE}/gen_arch.sh || gen_die "Could not read ${GK_SHARE}/gen_arch.sh"
  42 source ${GK_SHARE}/gen_determineargs.sh || gen_die "Could not read ${GK_SHARE}/gen_determineargs.sh"
  43 source ${GK_SHARE}/gen_compile.sh || gen_die "Could not read ${GK_SHARE}/gen_compile.sh"
  44 source ${GK_SHARE}/gen_configkernel.sh || gen_die "Could not read ${GK_SHARE}/gen_configkernel.sh"
  45 source ${GK_SHARE}/gen_initramfs.sh || gen_die "Could not read ${GK_SHARE}/gen_initramfs.sh"
  46 source ${GK_SHARE}/gen_moddeps.sh || gen_die "Could not read ${GK_SHARE}/gen_moddeps.sh"
  47 source ${GK_SHARE}/gen_package.sh || gen_die "Could not read ${GK_SHARE}/gen_package.sh"
  48 source ${GK_SHARE}/gen_bootloader.sh || gen_die "Could not read ${GK_SHARE}/gen_bootloader.sh"
  49
  50 TEMP=${TMPDIR}/$RANDOM.$RANDOM.$RANDOM.$$
  51
  52 trap_cleanup(){
  53         # Call exit code of 1 for failure
  54         cleanup
  55         exit 1
  56 }
  57
  58 cleanup(){
  59     if [ -n "$TEMP" -a -d "$TEMP" ]; then
  60         rm -rf "$TEMP"
  61     fi
  62
  63     if isTrue ${POSTCLEAR}
  64     then
  65             echo
  66             print_info 1 'RUNNING FINAL CACHE/TMP CLEANUP'
  67             print_info 1 "CACHE_DIR: ${CACHE_DIR}"
  68             CLEAR_CACHE_DIR='yes'
  69             setup_cache_dir
  70             echo
  71             print_info 1 "TMPDIR: ${TMPDIR}"
  72             clear_tmpdir
  73             fi
  74 }
  75
  76 trap trap_cleanup SIGHUP SIGQUIT SIGINT SIGTERM SIGKILL
  77 BUILD_KERNEL=0
  78 BUILD_RAMDISK=0
  79 BUILD_MODULES=0
  80
  81 # Parse all command line options...
  82 Options=$* # Save for later
  83 while [ $# -gt 0 ]
  84 do
  85         Option=$1; shift
  86         parse_cmdline $Option
  87 done
  88
  89 # Check if no action is specified...
  90 if [ "${BUILD_KERNEL}" = '0' -a "${BUILD_RAMDISK}" = '0' ]
  91 then
  92         usage
  93         exit 1
  94 fi
  95
  96 clear_log
  97 NORMAL=${GOOD} print_info 1 "Gentoo Linux Genkernel; Version ${GK_V}${NORMAL}"
  98 print_info 1 "Running with options: ${Options}"
  99 echo
 100
 101 # Set ${ARCH}
 102 get_official_arch
 103
 104 # Read arch-specific config
 105 print_info 1 "Using genkernel.conf from ${_GENKERNEL_CONF}"
 106 print_info 1 "Sourcing arch-specific config.sh from ${ARCH_CONFIG} .."
 107 source ${ARCH_CONFIG} || gen_die "Could not read ${ARCH_CONFIG}"
 108 _MODULES_LOAD=${GK_SHARE}/arch/${ARCH}/modules_load
 109 print_info 1 "Sourcing arch-specific modules_load from ${_MODULES_LOAD} .."
 110 source "${_MODULES_LOAD}" || gen_die "Could not read ${_MODULES_LOAD}"
 111 echo
 112
 113 # Merge modules_load from config
 114 for group_modules in ${!AMODULES_*}; do
 115         group="$(echo $group_modules | cut -d_ -f2)"
 116         eval cmodules="\$$group_modules"
 117         eval MODULES_${group}=\"\${MODULES_${group}} ${cmodules}\"
 118         print_info 1 "<config> Merged AMODULES_${group}:'${cmodules}' into MODULES_${group}"
 119 done
 120
 121
 122 # Based on genkernel.conf, arch-specific configs, and commandline options,
 123 # get the real arguments for usage...
 124
 125 determine_real_args
 126 determine_config_file
 127
 128 set_kernel_arch
 129
 130 [ ! -f "${TEMP}" ] && mkdir -p "${TEMP}"
 131
 132 setup_cache_dir
 133
 134 check_distfiles
 135
 136 dump_debugcache
 137
 138 NORMAL=${BOLD} print_info 1 "Linux Kernel ${BOLD}${KV}${NORMAL} for ${BOLD}${ARCH}${NORMAL}..."
 139 print_info 1 ".. with config file ${KERNEL_CONFIG}"
 140
 141 # Check BOOTDIR is mounted
 142 if ! isTrue ${CMD_INSTALL}
 143 then
 144         isTrue ${MOUNTBOOT} && print_info 2 'Skipping automatic mount of boot'
 145 else
 146         [[ -d ${BOOTDIR} ]] || gen_die "${BOOTDIR} is not a directory"
 147
 148         if ! egrep -q "[[:space:]]${BOOTDIR}[[:space:]]" /proc/mounts
 149         then
 150                 if egrep -q "^[^#].+[[:space:]]${BOOTDIR}[[:space:]]" /etc/fstab
 151                 then
 152                         if isTrue ${MOUNTBOOT}
 153                         then
 154                                 if ! mount ${BOOTDIR}
 155                                 then
 156                                         print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to mount ${BOOTDIR}!"
 157                                         echo
 158                                 else
 159                                         print_info 1 "mount: ${BOOTDIR} mounted successfully!"
 160                                 fi
 161                         else
 162                                 print_warning 1 "${BOLD}WARNING${NORMAL}: No mounted ${BOOTDIR} partition detected!"
 163                                 print_warning 1 "         Run ``mount ${BOOTDIR}`` to mount it!"
 164                                 echo
 165                         fi
 166                 fi
 167         elif isBootRO
 168         then
 169                 if isTrue ${MOUNTBOOT}
 170                 then
 171                         if ! mount -o remount,rw ${BOOTDIR}
 172                         then
 173                                 print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to remount ${BOOTDIR} RW!"
 174                                 echo
 175                         else
 176                                 print_info 1 "mount: ${BOOTDIR} remounted read/write successfully!"
 177                                 BOOTRW=1
 178                         fi
 179                 fi
 180         fi
 181 fi
 182
 183 ## Check whether another Genkernel is running
 184 #GENPIDS="`ps -C genkernel --no-headers -o pid | wc -l`"
 185 #if [ "${GENPIDS}" -gt '3' ]
 186 #then
 187 #       [ "${GENPIDS}" -gt '4' ] && EX='s'
 188 #       print_warning 1 "${BOLD}WARNING${NORMAL}: Another Genkernel instance is running under"
 189 #       print_warning 1 "         process ID${EX} " 0
 190 #       GENPIDS=`ps -C genkernel --no-headers -o pid`
 191 #       echo -n "${GENPIDS}" | sed -e "s/$$//; s/ /, /g"
 192 #       echo 'halting...'
 193 #       echo
 194 #       print_warning 1 'Running multiple genkernels on the same source tree will cause data loss!'
 195 #       print_info 1 "Press ^C to halt; ^D to continue [ ${BOLD}if${NORMAL} you know what you're doing! ]"
 196 #       echo
 197 #       CTEMP="${TEMP}"
 198 #       TEMP=${TMPDIR-/tmp}
 199 #       TEMP=${TEMP}/genkernel.$RANDOM.$RANDOM.$RANDOM.$$
 200 #       print_info 1 'thread: Running multiple genkernels may cause problems!'
 201 #       print_info 1 "thread: Temporary files reallocated to ${TEMP}..."
 202 #       echo
 203 #fi
 204
 205 KERNCACHE_IS_VALID=0
 206 if [ "${KERNCACHE}" != "" ]
 207 then
 208     gen_kerncache_is_valid
 209 fi
 210
 211 if [ ${BUILD_KERNEL} = '1' -a "${KERNCACHE_IS_VALID}" = '0' ]
 212 then
 213         # Configure kernel
 214         config_kernel
 215
 216         # Make prepare
 217         if [ "${ARCH_HAVENOPREPARE}" = '' ]
 218         then
 219                 compile_generic prepare kernel
 220         fi
 221
 222         # KV may have changed due to the configuration
 223         get_KV
 224
 225         compile_kernel
 226
 227         # Compile modules
 228         if [ "${BUILD_MODULES}" = '1' -a "${BUILD_STATIC}" = '0' ]
 229         then
 230                 compile_modules
 231         fi
 232
 233         if [ "${SAVE_CONFIG}" = '1' ]
 234         then
 235                 print_info 1 "Copying config for successful build to /etc/kernels/kernel-config-${ARCH}-${KV}"
 236                 [ ! -e '/etc/kernels' ] && mkdir -p /etc/kernels
 237                 cp "${KERNEL_DIR}/.config" "/etc/kernels/kernel-config-${ARCH}-${KV}"
 238         fi
 239 fi
 240
 241 if isTrue "${CMD_INSTALL}"
 242 then
 243         if [ "${KERNCACHE}" != "" -a "${KERNCACHE_IS_VALID}" != "0" ]
 244         then
 245                 gen_kerncache_extract_kernel
 246         fi
 247 fi
 248
 249 if [ "${KERNCACHE}" != "" -a "${KERNCACHE_IS_VALID}" != "0" ]
 250 then
 251         [ "${BUILD_STATIC}" = '0' ] && gen_kerncache_extract_modules
 252         gen_kerncache_extract_config
 253 fi
 254
 255 # Run callback
 256 if [ "${CMD_CALLBACK}" != "" ]
 257 then
 258         print_info 1 "" 1 0
 259         print_info 1 "Preparing to run callback: \"${CMD_CALLBACK}\"" 0
 260
 261         CALLBACK_ESCAPE=0
 262         CALLBACK_COUNT=0
 263
 264         trap "CALLBACK_ESCAPE=1" TERM KILL INT QUIT ABRT
 265         while [[ "${CALLBACK_ESCAPE}" = '0' && ${CALLBACK_COUNT} -lt 5 ]]
 266         do
 267                 sleep 1; echo -n '.';
 268                 let CALLBACK_COUNT=${CALLBACK_COUNT}+1
 269         done
 270
 271         if [ "${CALLBACK_ESCAPE}" = '0' ]
 272         then
 273                 echo
 274                 echo
 275                 eval ${CMD_CALLBACK} | tee -a ${LOGFILE}
 276                 CMD_STATUS="${PIPESTATUS[0]}"
 277                 echo
 278                 print_info 1 "<<< Callback exit status: ${CMD_STATUS}"
 279                 [ "${CMD_STATUS}" != '0' ] && gen_die '--callback failed!'
 280         else
 281                 echo
 282                 print_info 1 ">>> Callback cancelled..."
 283         fi
 284         trap - TERM KILL INT QUIT ABRT
 285         print_info 1 "" 1 0
 286 fi
 287
 288 if [ "${BUILD_RAMDISK}" = '1' ]
 289 then
 290         if [ "${BUSYBOX}" = '1' ]
 291         then
 292                 # Compile Busybox
 293                 compile_busybox
 294         fi
 295
 296         if isTrue "${UNIONFS}"
 297         then
 298                 compile_unionfs_fuse
 299         fi
 300
 301         # Compile initramfs
 302         create_initramfs
 303 else
 304         print_info 1 'initrd: Not building since only the kernel was requested...'
 305 fi
 306
 307 if isTrue "${INTEGRATED_INITRAMFS}" #|| [ "${BUILD_KERNEL}" = '1' -a "${KERNCACHE_IS_VALID}" == "0" ]
 308 then
 309         # We build the kernel a second time to include the initramfs
 310         compile_kernel
 311 fi
 312
 313 [ "${KERNCACHE}" != "" ] && gen_kerncache
 314 [ "${MINKERNPACKAGE}" != '' ] && gen_minkernpackage
 315 [ "${MODULESPACKAGE}" != '' ] && gen_modulespackage
 316
 317 # Clean up...
 318 [ -n "${CTEMP}" ] && rm -rf "${TEMP}"
 319
 320 if [ "${BUILD_KERNEL}" = '1' ]
 321 then
 322         if isTrue "${CMD_INSTALL}"
 323         then
 324                 set_bootloader
 325         fi
 326         print_info 1 ''
 327         print_info 1 "Kernel compiled successfully!"
 328         print_info 1 ''
 329         print_info 1 'Required Kernel Parameters:'
 330         if [ "${BUILD_RAMDISK}" = '0' ]
 331         then
 332                 print_info 1 '    root=/dev/$ROOT'
 333                 print_info 1 '    [ And "vga=0x317 splash=verbose" if you use a framebuffer ]'
 334                 print_info 1 ''
 335                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 336                 print_info 1 '    one specified in /etc/fstab'
 337         else
 338                 print_info 1 '    real_root=/dev/$ROOT'
 339                 print_info 1 ''
 340                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 341                 print_info 1 '    one specified in /etc/fstab'
 342                 print_info 1 ''
 343                 print_info 1 "If you require Genkernel's hardware detection features; you MUST"
 344                 print_info 1 'tell your bootloader to use the provided INITRAMFS file. Otherwise;'
 345                 print_info 1 'substitute the root argument for the real_root argument if you are'
 346                 print_info 1 'not planning to use the initramfs...'
 347         fi
 348 fi
 349
 350 if [ "${BUILD_RAMDISK}" = '1' ]
 351 then
 352         echo
 353         print_warning 1 'WARNING... WARNING... WARNING...'
 354         print_warning 1 'Additional kernel cmdline arguments that *may* be required to boot properly...'
 355         [ "${SPLASH}" = '1' ] && print_warning 1 "add \"vga=791 splash=silent,theme:${SPLASH_THEME} console=tty1 quiet\" if you use a splash framebuffer ]"
 356         [ "${LVM}" = '1' ] && print_warning 1 'add "dolvm" for lvm support'
 357         [ "${DMRAID}" = '1' ] && print_warning 1 'add "dodmraid" for dmraid support'
 358         [ "${MDADM}" = '1' ] && print_warning 1 'add "domdadm" for RAID support'
 359         [ "${DMRAID}" = '1' ] && print_warning 1 '      or "dodmraid=<additional options>"'
 360         [ "${ZFS}" = '1' ] && print_warning 1 'add "dozfs" for ZFS volume management support'
 361         [ "${ZFS}" = '1' ] && print_warning 1 'add either "real_root=ZFS" (bootfs autodetection) or "real_root=ZFS=<dataset>" to boot from a ZFS dataset'
 362         [ "${ISCSI}" = '1' ] && print_warning 1 'add at least "iscsi_initiatorname=<initiator name> iscsi_target=<target name> and iscsi_address=<target ip>" for iscsi support'
 363
 364         if [[ "$(file --brief --mime-type "${KERNEL_CONFIG}")" == application/x-gzip ]]; then
 365                 # Support --kernel-config=/proc/config.gz, mainly
 366                 CONFGREP=zgrep
 367         else
 368                 CONFGREP=grep
 369         fi
 370
 371         if [ `${CONFGREP} 'CONFIG_EXT[0-9]_FS=' "${KERNEL_CONFIG}" | wc -l` -ge 2 ]; then
 372                 print_warning 1 'With support for several ext* filesystems available, it may be needed to'
 373                 print_warning 1 'add "rootfstype=ext3" or "rootfstype=ext4" to the list of boot parameters.'
 374         fi
 375
 376         unset CONFGREP
 377 fi
 378
 379 [ "${BOOTRW}" != '' ] && mount -o remount,ro ${BOOTDIR}
 380
 381 echo
 382 print_info 1 'Do NOT report kernel bugs as genkernel bugs unless your bug'
 383 print_info 1 'is about the default genkernel configuration...'
 384 print_info 1 ''
 385 print_info 1 'Make sure you have the latest ~arch genkernel before reporting bugs.'
 386
 387 #Final Cleanup
 388 cleanup