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