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