genkernel

   1 #!/bin/bash
   2 # Genkernel v3
   3
   4 GK_V='3.1.0l'
   5 TEMP='/var/tmp/genkernel'
   6 TODEBUGCACHE=1 # Until an error occurs or DEBUGFILE is fully qualified.
   7
   8 small_die() {
   9   echo $1
  10   exit 1
  11 }
  12
  13 source /etc/genkernel.conf || small_die "Could not read /etc/genkernel.conf"
  14 source ${GK_BIN}/gen_funcs.sh || small_die "Could not read ${GK_BIN}/gen_funcs.sh"
  15 source ${GK_BIN}/gen_cmdline.sh || gen_die "Could not read ${GK_BIN}/gen_cmdline.sh"
  16 source ${GK_BIN}/gen_arch.sh || gen_die "Could not read ${GK_BIN}/gen_arch.sh"
  17 source ${GK_BIN}/gen_determineargs.sh || gen_die "Could not read ${GK_BIN}/gen_determineargs.sh"
  18 source ${GK_BIN}/gen_compile.sh || gen_die "Could not read ${GK_BIN}/gen_compile.sh"
  19 source ${GK_BIN}/gen_configkernel.sh || gen_die "Could not read ${GK_BIN}/gen_configkernel.sh"
  20 source ${GK_BIN}/gen_initrd.sh || gen_die "Could not read ${GK_BIN}/gen_initrd.sh"
  21 source ${GK_BIN}/gen_moddeps.sh || gen_die "Could not read ${GK_BIN}/gen_moddeps.sh"
  22 source ${GK_BIN}/gen_package.sh || gen_die "Could not read ${GK_BIN}/gen_package.sh"
  23 source ${GK_BIN}/gen_bootloader.sh || gen_die "Could not read ${GK_BIN}/gen_bootloader.sh"
  24
  25 BUILD_KERNEL=0
  26 BUILD_INITRD=0
  27
  28 # Parse all command line options...
  29 while [ $# -gt 0 ]
  30 do
  31         Option=$1; shift
  32         parse_cmdline $Option
  33 done
  34
  35 # Check if no action is specified...
  36 if [ "${BUILD_KERNEL}" -eq 0 -a "${BUILD_INITRD}" -eq 0 ]
  37 then
  38         usage
  39         exit 1
  40 fi
  41
  42 clear_log
  43 NORMAL=${GOOD} print_info 1 "Gentoo Linux Genkernel; Version ${GK_V}${NORMAL}"
  44
  45 # Set ${ARCH}
  46 get_official_arch
  47
  48 # Read arch-specific config
  49 source ${ARCH_CONFIG} || gen_die "Could not read ${ARCH_CONFIG}"
  50 source ${GK_SHARE}/${ARCH}/modules_load || gen_die "Could not read ${GK_SHARE}/${ARCH}/modules_load"
  51
  52 [ ! -f "${TEMP}" ] && mkdir -p "${TEMP}"
  53 [ ! -f "${CACHE_DIR}" ] && mkdir -p "${CACHE_DIR}"
  54
  55 # Based on genkernel.conf, arch-specific configs, and commandline options,
  56 # get the real arguments for usage...
  57
  58 determine_real_args
  59 dump_debugcache
  60
  61 NORMAL=${BOLD} print_info 1 "Compiling Linux Kernel ${BOLD}${KV}${NORMAL} for ${BOLD}${ARCH}${NORMAL}..."
  62 echo
  63
  64 if [ "${BUILD_INITRD}" -ne '0' ]
  65 then
  66         if ! has_loop
  67         then
  68                 modprobe loop 2>/dev/null
  69                 if ! has_loop
  70                 then
  71                         print_error 1 'Your kernel does not appear to have loop device support.'
  72                         print_error 1 'Please load loop support before running genkernel!'
  73                         gen_die 'Load loop support!'
  74                 else
  75                         print_info 1 'loop: "loop" module loaded successfully...'
  76                 fi
  77         fi
  78 fi
  79
  80 # Check /boot is mounted
  81 if isTrue ${CMD_NOINSTALL}
  82 then
  83         isTrue ${MOUNTBOOT} && print_info 2 'Skipping automatic mount of boot'
  84 else
  85         if ! egrep -q ' /boot ' /proc/mounts
  86         then
  87                 if egrep -q '^[^#].+    /boot   ' /etc/fstab
  88                 then
  89                         if isTrue ${MOUNTBOOT}
  90                         then
  91                                 if ! mount /boot
  92                                 then
  93                                         print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to mount /boot!"
  94                                         echo
  95                                 else
  96                                         print_info 1 'mount: /boot mounted successfully!'
  97                                 fi
  98                         else
  99                                 print_warning 1 "${BOLD}WARNING${NORMAL}: No mounted /boot partition detected!"
 100                                 print_warning 1 '         Run ``mount /boot`` to mount it!'
 101                                 echo
 102                         fi
 103                 fi
 104         elif isBootRO
 105         then
 106                 if isTrue ${MOUNTBOOT}
 107                 then
 108                         if ! mount -o remount,rw /boot
 109                         then
 110                                 print_warning 1 "${BOLD}WARNING${NORMAL}: Failed to remount /boot RW!"
 111                                 echo
 112                         else
 113                                 print_info 1 "mount: /boot remounted read/write successfully!"
 114                                 BOOTRW=1
 115                         fi
 116                 fi
 117         fi
 118 fi
 119
 120 # Check whether another Genkernel is running
 121 GENPIDS="`ps -C genkernel --no-headers -o pid | wc -l`"
 122 if [ "${GENPIDS}" -gt '3' ]
 123 then
 124         [ "${GENPIDS}" -gt '4' ] && EX='s'
 125         print_warning 1 "${BOLD}WARNING${NORMAL}: Another Genkernel instance is running under"
 126         print_warning 1 "         process ID${EX} " 0
 127         GENPIDS=`ps -C genkernel --no-headers -o pid`
 128         echo -n "${GENPIDS}" | sed -e "s/$$//; s/ /, /g"
 129         echo 'halting...'
 130         echo
 131         print_warning 1 'Running multiple genkernels on the same source tree will cause data loss!'
 132         print_info 1 "Press ^C to halt; ^D to continue [ ${BOLD}if${NORMAL} you know what you're doing! ]"
 133         cat
 134         echo
 135         CTEMP="${TEMP}"
 136         TEMP="/var/tmp/genkernel-`dd if=/dev/random count=1 2>/dev/null | md5sum | cut -d\  -f1`"
 137         print_info 1 'thread: Running multiple genkernels may cause problems!'
 138         print_info 1 "thread: Temporary files reallocated to ${TEMP}..."
 139         echo
 140 fi
 141
 142 if [ ${BUILD_KERNEL} -eq 1 ]
 143 then
 144         # Configure kernel
 145         config_kernel
 146
 147         # Make deps
 148         compile_dep
 149
 150         # Make prepare [2.6]
 151         [ "${VER}" -gt '2' ] || [ "${VER}" -eq '2' -a "${PAT}" -ge '6' ] && compile_generic prepare kernel
 152
 153         # Run postconf
 154         if [ "${CMD_POSTCONF}" != '' ]
 155         then
 156                 print_info 1 '' 1 0
 157                 print_info 1 "Preparing to run postconf: \"${CMD_POSTCONF}\"" 0
 158
 159                 CALLBACK_ESCAPE=0
 160                 CALLBACK_COUNT=0
 161
 162                 trap "CALLBACK_ESCAPE=1" TERM KILL INT QUIT ABRT
 163                 while [[ ${CALLBACK_ESCAPE} -eq 0 && ${CALLBACK_COUNT} -lt 5 ]]
 164                 do
 165                         sleep 1; echo -n '.';
 166                         let CALLBACK_COUNT=${CALLBACK_COUNT}+1
 167                 done
 168
 169                 if [ "${CALLBACK_ESCAPE}" -eq 0 ]
 170                 then
 171                         echo
 172                         echo
 173                         eval ${CMD_POSTCONF} | tee -a ${DEBUGFILE}
 174                         CMD_STATUS="${PIPESTATUS[0]}"
 175                         echo
 176                         print_info 1 "<<< Postconf callback exit status: ${CMD_STATUS}"
 177                         [ "${CMD_STATUS}" -ne 0 ] && gen_die '--postconf failed!'
 178                 else
 179                         echo
 180                         print_info 1 '>>> Postconf cancelled...'
 181                 fi
 182                 trap - TERM KILL INT QUIT ABRT
 183                 print_info 1 '' 1 0
 184         fi
 185
 186         if [ "${GENSPLASH}" -eq '1' ]
 187         then
 188                 if [ -x /sbin/splash ]
 189                 then
 190                         [ -z "${GENSPLASH_THEME}" ] && [ -e /etc/conf.d/splash ] && source /etc/conf.d/splash
 191                         [ -z "${GENSPLASH_THEME}" ] && GENSPLASH_THEME=default
 192                         print_info 1 "  >> Installing gensplash [ using the ${GENSPLASH_THEME} theme ]..."
 193                         # 2.6.9
 194                         sed -i -e 's:$(obj)/gen_init_cpio $(initramfs-y) FORCE:$(if $(shell [ ! -f $(obj)/initramfs_data.cpio ] \&\& echo 1 ), $(obj)/gen_init_cpio $(initramfs-y)):' ${KERNEL_DIR}/usr/Makefile
 195                         # 2.6.10
 196                         sed -i -e 's:$(obj)/gen_init_cpio \\:$(if $(shell [ ! -f $(obj)/initramfs_data.cpio ] \&\& echo 1 ), $(obj)/gen_init_cpio $(initramfs-y) $(obj)/initramfs_list):' -e 's:$(initramfs-y) $(obj)/initramfs_list FORCE::' ${KERNEL_DIR}/usr/Makefile
 197                         splash_geninitramfs -g ${KERNEL_DIR}/usr/initramfs_data.cpio.gz ${GENSPLASH_THEME}
 198                         gunzip ${KERNEL_DIR}/usr/initramfs_data.cpio.gz
 199                 else
 200                         print_warning 1 '               >> No splash detected; skipping!'
 201                 fi
 202         fi
 203
 204         # Compile kernel
 205         compile_kernel
 206
 207         # Compile modules
 208         compile_modules
 209
 210         if [ ${SAVE_CONFIG} -eq 1 ]
 211         then
 212                 print_info 1 "Copying config for successful build to /etc/kernels/kernel-config-${ARCH}-${KV}"
 213                 [ ! -e '/etc/kernels' ] && mkdir -p /etc/kernels
 214                 cp "${KERNEL_DIR}/.config" "/etc/kernels/kernel-config-${ARCH}-${KV}"
 215         fi
 216 fi
 217
 218 # Run callback
 219 if [ "${CMD_CALLBACK}" != "" ]
 220 then
 221         print_info 1 "" 1 0
 222         print_info 1 "Preparing to run callback: \"${CMD_CALLBACK}\"" 0
 223
 224         CALLBACK_ESCAPE=0
 225         CALLBACK_COUNT=0
 226
 227         trap "CALLBACK_ESCAPE=1" TERM KILL INT QUIT ABRT
 228         while [[ ${CALLBACK_ESCAPE} -eq 0 && ${CALLBACK_COUNT} -lt 5 ]]
 229         do
 230                 sleep 1; echo -n '.';
 231                 let CALLBACK_COUNT=${CALLBACK_COUNT}+1
 232         done
 233
 234         if [ "${CALLBACK_ESCAPE}" -eq 0 ]
 235         then
 236                 echo
 237                 echo
 238                 eval ${CMD_CALLBACK} | tee -a ${DEBUGFILE}
 239                 CMD_STATUS="${PIPESTATUS[0]}"
 240                 echo
 241                 print_info 1 "<<< Callback exit status: ${CMD_STATUS}"
 242                 [ "${CMD_STATUS}" -ne 0 ] && gen_die '--callback failed!'
 243         else
 244                 echo
 245                 print_info 1 ">>> Callback cancelled..."
 246         fi
 247         trap - TERM KILL INT QUIT ABRT
 248         print_info 1 "" 1 0
 249 fi
 250
 251 if [ "${BUILD_INITRD}" -eq '1' ]
 252 then
 253         # Compile dietlibc
 254         # if [ "${USE_DIETLIBC}" = '1' ]
 255         # then
 256         #       compile_dietlibc
 257         # fi
 258
 259         # Compile Busybox
 260         compile_busybox
 261
 262         # Only compile insmod if we're installing modules onto the initrd
 263         if [ "${NOINITRDMODULES}" = '' ]
 264         then
 265                 if [ "${PAT}" -gt '4' ]
 266                 then
 267                         # Compile module-init-tools
 268                         compile_module_init_tools
 269                 else
 270                         compile_modutils
 271                 fi
 272         fi
 273
 274         compile_devfsd
 275         if [ "${DEVFS}" -eq '0' ]
 276         then
 277                 [ "${VER}" -gt '2' ] || [ "${VER}" -eq '2' -a "${PAT}" -ge '6' ] && UDEV=1
 278         fi
 279         [ "${UDEV}" -eq '1' ] && compile_udev
 280
 281         # Create initrd
 282         create_initrd
 283 else
 284         print_info 1 'initrd: Not building since only the kernel was requested...'
 285 fi
 286 [ "${MINKERNPACKAGE}" != "" ] && gen_minkernpackage
 287 [ "${MAXKERNPACKAGE}" != "" ] && gen_maxkernpackage
 288
 289 # Clean up...
 290 [ -n "${CTEMP}" ] && rm -rf "${TEMP}"
 291
 292 if [ "${BUILD_KERNEL}" -eq '1' ]
 293 then
 294         set_bootloader
 295         print_info 1 ''
 296         print_info 1 "Kernel compiled successfully!"
 297         print_info 1 ''
 298         print_info 1 'Required Kernel Parameters:'
 299         if [ "${BUILD_INITRD}" -eq '0' ]
 300         then
 301                 print_info 1 '    root=/dev/$ROOT'
 302                 print_info 1 '    [ And "vga=0x317 splash=verbose" if you use a framebuffer ]'
 303                 print_info 1 ''
 304                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 305                 print_info 1 '    one specified in /etc/fstab'
 306         else
 307                 print_info 1 '    root=/dev/ram0 real_root=/dev/$ROOT init=/linuxrc'
 308                 [ "${INITRD_SIZE}" -ge 4096 ] && print_info 1 "    ramdisk_size=8192"
 309                 print_info 1 '    [ And "vga=0x317 splash=verbose" if you use a framebuffer ]'
 310                 print_info 1 ''
 311                 print_info 1 '    Where $ROOT is the device node for your root partition as the'
 312                 print_info 1 '    one specified in /etc/fstab'
 313                 print_info 1 ''
 314                 print_info 1 "If you require Genkernel's hardware detection features; you MUST"
 315                 print_info 1 'tell your bootloader to use the provided initrd file. Otherwise;'
 316                 print_info 1 'substitute the root argument for the real_root argument if you are'
 317                 print_info 1 'not planning to use the initrd...'
 318         fi
 319 else
 320         print_info 1 ''
 321         print_info 1 'initrd compiled successfully!'
 322 fi
 323
 324 [ "${BOOTRW}" != '' ] && mount -o remount,ro /boot
 325
 326 print_info 1 ''
 327 print_info 1 'Do NOT report kernel bugs as genkernel bugs unless your bug'
 328 print_info 1 'is about the default genkernel configuration...'
 329 print_info 1 ''
 330 print_info 1 'Make sure you have the latest genkernel before reporting bugs.'