gen_initrd.sh

   1 #!/bin/bash
   2
   3 # create_initrd_loop(size)
   4 create_initrd_loop() {
   5         local inodes
   6         [ "$#" -ne '1' ] && gen_die 'create_initrd_loop(): Not enough arguments!'
   7         mkdir -p ${TEMP}/initrd-mount ||
   8                 gen_die 'Could not create loopback mount directory!'
   9         dd if=/dev/zero of=${TMPDIR}/initrd-${KV} bs=1k count=${1} >> "${DEBUGFILE}" 2>&1 ||
  10                 gen_die "Could not zero initrd-${KV}"
  11         mke2fs -F -N500 -q "${TMPDIR}/initrd-${KV}" >> "${DEBUGFILE}" 2>&1 ||
  12                 gen_die "Could not format initrd-${KV}!"
  13         mount -t ext2 -o loop "${TMPDIR}/initrd-${KV}" "${TEMP}/initrd-mount" >> "${DEBUGFILE}" 2>&1 ||
  14                 gen_die 'Could not mount the initrd filesystem!'
  15 }
  16
  17 create_initrd_unmount_loop()
  18 {
  19         cd ${TEMP}
  20         umount "${TEMP}/initrd-mount" ||
  21                 gen_die 'Could not unmount initrd system!'
  22 }
  23
  24 move_initrd_to_loop()
  25 {
  26         cd "${TEMP}/initrd-temp"
  27         mv * "${TEMP}/initrd-mount" >> ${DEBUGFILE} 2>&1
  28 }
  29
  30 # check for static linked file with objdump
  31 is_static() {
  32         objdump -T $1 2>&1 | grep "not a dynamic object" > /dev/null
  33         return $?
  34 }
  35
  36 create_base_initrd_sys() {
  37         rm -rf "${TEMP}/initrd-temp" > /dev/null
  38         mkdir -p ${TEMP}/initrd-temp/dev
  39         mkdir -p ${TEMP}/initrd-temp/bin
  40         mkdir -p ${TEMP}/initrd-temp/etc
  41         mkdir -p ${TEMP}/initrd-temp/usr
  42         mkdir -p ${TEMP}/initrd-temp/proc
  43         mkdir -p ${TEMP}/initrd-temp/temp
  44         mkdir -p ${TEMP}/initrd-temp/sys
  45         mkdir -p ${TEMP}/initrd-temp/.initrd
  46         mkdir -p ${TEMP}/initrd-temp/var/lock/dmraid
  47         ln -s bin ${TEMP}/initrd-temp/sbin
  48         ln -s ../bin ${TEMP}/initrd-temp/usr/bin
  49         ln -s ../bin ${TEMP}/initrd-temp/usr/sbin
  50
  51         echo "/dev/ram0     /           ext2    defaults        0 0" > ${TEMP}/initrd-temp/etc/fstab
  52         echo "proc          /proc       proc    defaults    0 0" >> ${TEMP}/initrd-temp/etc/fstab
  53
  54         if [ "${NODEVFSD}" = '' ]
  55         then
  56                 echo "REGISTER        .*           MKOLDCOMPAT" > ${TEMP}/initrd-temp/etc/devfsd.conf
  57                 echo "UNREGISTER      .*           RMOLDCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  58                 echo "REGISTER        .*           MKNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  59                 echo "UNREGISTER      .*           RMNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  60         fi
  61
  62         # SGI LiveCDs need the following binary (no better place for it than here)
  63         # getdvhoff is a DEPEND of genkernel, so it *should* exist
  64         if [ ${BUILD_INITRAMFS} -eq 1 ]
  65         then
  66                 [ -e /usr/lib/getdvhoff/getdvhoff ] \
  67                         && cp /usr/lib/getdvhoff/getdvhoff ${TEMP}/initrd-temp/bin \
  68                         || gen_die "sys-boot/getdvhoff not merged!"
  69         fi
  70
  71         cd ${TEMP}/initrd-temp/dev
  72         MAKEDEV std
  73         MAKEDEV console
  74
  75         if [ "${DISKLABEL}" -eq '1' ]; then
  76                 cp "${BLKID_BINCACHE}" "${TEMP}/initrd-temp/bin/blkid.bz2" ||
  77                         gen_die 'Could not copy blkid from bincache!'
  78                 bunzip2 "${TEMP}/initrd-temp/bin/blkid.bz2" ||
  79                         gen_die 'Could not uncompress blkid!'
  80                 chmod +x "${TEMP}/initrd-temp/bin/blkid"
  81         fi
  82
  83         cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.bz2" ||
  84                 gen_die 'Could not copy busybox from bincache!'
  85         bunzip2 "${TEMP}/initrd-temp/bin/busybox.bz2" ||
  86                 gen_die 'Could not uncompress busybox!'
  87         chmod +x "${TEMP}/initrd-temp/bin/busybox"
  88
  89         if [ "${NOINITRDMODULES}" = '' ]
  90         then
  91                 if [ "${PAT}" -gt "4" ]
  92                 then
  93                         cp "${MODULE_INIT_TOOLS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
  94                                 gen_die 'Could not copy insmod.static from bincache!'
  95                 else
  96                         cp "${MODUTILS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
  97                                 gen_die 'Could not copy insmod.static from bincache'
  98                 fi
  99
 100                 bunzip2 "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
 101                         gen_die 'Could not uncompress insmod.static!'
 102                 mv "${TEMP}/initrd-temp/bin/insmod.static" "${TEMP}/initrd-temp/bin/insmod"
 103                 chmod +x "${TEMP}/initrd-temp/bin/insmod"
 104         fi
 105
 106         # devfsd
 107         if [ "${DEVFS}" -eq '1' ]
 108         then
 109                 cp "${DEVFSD_BINCACHE}" "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die 'Could not copy devfsd executable from bincache!'
 110                 bunzip2 "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die 'Could not uncompress devfsd!'
 111                 chmod +x "${TEMP}/initrd-temp/bin/devfsd"
 112         fi
 113
 114         # udev
 115 #       if [ "${UDEV}" -eq '1' ]
 116 #       then
 117 #               /bin/tar -jxpf "${UDEV_BINCACHE}" -C "${TEMP}/initrd-temp" || gen_die 'Could not extract udev binary cache!'
 118 #               if [ ! -e "${TEMP}/initrd-temp/bin/udevstart" ]
 119 #               then
 120 #                   ln -sf "./udev" "${TEMP}/initrd-temp/bin/udevstart" ||      gen_die 'Could not symlink udev -> udevstart!'
 121 #               fi
 122
 123 #               if [ ! -e "${TEMP}/initrd-temp/bin/udevsend" ]
 124 #               then
 125 #                   ln -sf "./udev" "${TEMP}/initrd-temp/bin/udevsend" ||       gen_die 'Could not symlink udev -> udevsend!'
 126 #               fi
 127 #       fi
 128
 129         #unionfs modules
 130         if [ "${UNIONFS}" -eq '1' ]
 131         then
 132                 print_info 1 'UNIONFS MODULES: Adding support (compiling)...'
 133                 compile_unionfs_modules
 134                 /bin/tar -jxpf "${UNIONFS_MODULES_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 135                         gen_die "Could not extract unionfs modules binary cache!";
 136         fi
 137
 138         #unionfs utils
 139         if [ "${UNIONFS}" -eq '1' ]
 140         then
 141                 print_info 1 'UNIONFS TOOLS: Adding support (compiling)...'
 142                 compile_unionfs_utils
 143                 /bin/tar -jxpf "${UNIONFS_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 144                         gen_die "Could not extract unionfs tools binary cache!";
 145         fi
 146
 147
 148         # DMRAID
 149         if [ "${DMRAID}" = '1' ]
 150         then
 151                 print_info 1 'DMRAID: Adding support (compiling binaries)...'
 152                 compile_dmraid
 153                 /bin/tar -jxpf "${DMRAID_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 154                         gen_die "Could not extract dmraid binary cache!";
 155         fi
 156
 157         # LVM2
 158         if [ "${LVM2}" = '1' ]
 159         then
 160                 if [ -e '/sbin/lvm' ] && ldd /sbin/lvm|grep -q 'not a dynamic executable';
 161                 then
 162                         print_info 1 'LVM2: Adding support (using local static binaries)...'
 163                         cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
 164                                 gen_die 'Could not copy over lvm!'
 165                 else
 166                         print_info 1 'LVM2: Adding support (compiling binaries)...'
 167                         compile_lvm2
 168
 169                         /bin/tar -jxpf "${LVM2_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 170                                 gen_die "Could not extract lvm2 binary cache!";
 171                         mv ${TEMP}/initrd-temp/bin/lvm.static ${TEMP}/initrd-temp/bin/lvm ||
 172                                 gen_die 'LVM2 error: Could not move lvm.static to lvm!'
 173                 fi
 174                 for i in vgchange vgscan; do
 175                         ln  ${TEMP}/initrd-temp/bin/lvm ${TEMP}/initrd-temp/bin/$i ||
 176                                 gen_die "LVM2 error: Could not link ${i}!"
 177                 done
 178                 mkdir -p ${TEMP}/initrd-temp/etc/lvm
 179                 cp /etc/lvm/lvm.conf "${TEMP}/initrd-temp/etc/lvm/lvm.conf" ||
 180                         gen_die 'Could not copy over lvm.conf!'
 181         fi
 182
 183         # EVMS2
 184         if [ "${EVMS2}" = '1' ]
 185         then
 186                 if [ -e '/sbin/evms_activate' ]
 187                 then
 188                         print_info 1 'EVMS2: Adding support...'
 189                         mkdir -p ${TEMP}/initrd-temp/lib
 190                         mkdir -p ${TEMP}/initrd-temp/sbin
 191                         mkdir -p ${TEMP}/initrd-temp/etc
 192                         mkdir -p ${TEMP}/initrd-temp/bin
 193                         cp -a /lib/ld-* "${TEMP}/initrd-temp/lib" \
 194                                 || gen_die 'Could not copy files for EVMS2!'
 195                         if [ -n "`ls /lib/libgcc_s*`" ]
 196                         then
 197                                 cp -a /lib/libgcc_s* "${TEMP}/initramfs-evms2-temp/lib" \
 198                                         || gen_die 'Could not copy files for EVMS2!'
 199                         fi
 200                         cp -a /lib/libc-* /lib/libc.* "${TEMP}/initrd-temp/lib" \
 201                                 || gen_die 'Could not copy files for EVMS2!'
 202                         cp -a /lib/libdl-* /lib/libdl.* "${TEMP}/initrd-temp/lib" \
 203                                 || gen_die 'Could not copy files for EVMS2!'
 204                         cp -a /lib/libpthread* "${TEMP}/initrd-temp/lib" \
 205                                 || gen_die 'Could not copy files for EVMS2!'
 206                         cp -a /lib/libuuid*so* "${TEMP}/initrd-temp/lib" \
 207                                 || gen_die 'Could not copy files for EVMS2!'
 208                         cp -a /lib/libevms*so* "${TEMP}/initrd-temp/lib" \
 209                                 || gen_die 'Could not copy files for EVMS2!'
 210                         cp -a /lib/evms "${TEMP}/initrd-temp/lib" \
 211                                 || gen_die 'Could not copy files for EVMS2!'
 212                         cp -a /lib/evms/* "${TEMP}/initrd-temp/lib/evms" \
 213                                 || gen_die 'Could not copy files for EVMS2!'
 214                         cp -a /etc/evms.conf "${TEMP}/initrd-temp/etc" \
 215                                 || gen_die 'Could not copy files for EVMS2!'
 216                         cp /sbin/evms_activate "${TEMP}/initrd-temp/sbin" \
 217                                 || gen_die 'Could not copy over evms_activate!'
 218                         # Fix EVMS2 complaining that it cant find the swap utilities.
 219                         # These are not required in the initrd
 220                         for swap_libs in "${TEMP}/initrd-temp/lib/evms/*/swap*.so"
 221                         do
 222                                 rm ${swap_libs}
 223                         done
 224                 fi
 225         fi
 226
 227         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 228         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 229         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 230         xargs yes zcat chmod chown cut kill killall; do
 231                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 232                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 233                         gen_die "Busybox error: could not link ${i}!"
 234         done
 235
 236         if isTrue ${LUKS}
 237         then
 238                 if is_static /bin/cryptsetup
 239                 then
 240                         print_info "Including LUKS support"
 241                         rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
 242                         cp /bin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
 243                         chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
 244                 else
 245                         print_info "LUKS support requires static cryptsetup at /bin/cryptsetup"
 246                         print_info "Not including LUKS support"
 247                 fi
 248         fi
 249 }
 250
 251 print_list() {
 252         local x
 253         for x in ${*}
 254         do
 255                 echo ${x}
 256         done
 257 }
 258
 259 create_initrd_modules() {
 260         local group
 261         local group_modules
 262
 263         if [ "${PAT}" -gt "4" ]
 264         then
 265                 MOD_EXT=".ko"
 266         else
 267                 MOD_EXT=".o"
 268         fi
 269
 270         print_info 2 "initrd: >> Searching for modules..."
 271
 272         if [ "${INSTALL_MOD_PATH}" != '' ]
 273         then
 274                 cd ${INSTALL_MOD_PATH}
 275         else
 276                 cd /
 277         fi
 278
 279         for i in `gen_dep_list`
 280         do
 281                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" 2>/dev/null| head -n 1`
 282                 if [ -z "${mymod}" ]
 283                 then
 284                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 285                         continue;
 286                 fi
 287                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 288                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 289         done
 290
 291         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp 2>/dev/null
 292
 293         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 294         for group_modules in ${!MODULES_*}; do
 295                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 296                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 297         done
 298 }
 299
 300 create_initrd_aux() {
 301         if [ -f "${CMD_LINUXRC}" ]
 302         then
 303                 cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
 304                 print_info 2 "        >> Copying user specified linuxrc: ${CMD_LINUXRC}"
 305         else
 306                 if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 307                 then
 308                         cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 309                 else
 310                         cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 311                 fi
 312         fi
 313
 314         # Make sure it's executable
 315         chmod 0755 "${TEMP}/initrd-temp/linuxrc"
 316
 317         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 318         then
 319                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 320         else
 321                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 322         fi
 323
 324         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 325         then
 326                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 327         else
 328                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 329         fi
 330
 331         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 332         for group_modules in ${!MODULES_*}; do
 333                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 334                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 335         done
 336         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 337
 338         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 339         then
 340                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 341         else
 342                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 343         fi
 344         if isTrue $CMD_DOKEYMAPAUTO
 345         then
 346                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 347         fi
 348         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 349         /bin/tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 350         if isTrue $CMD_SLOWUSB
 351         then
 352                 echo 'MY_HWOPTS="${MY_HWOPTS} slowusb"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 353         fi
 354
 355         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 356         cd ${OLDPWD}
 357         chmod +x "${TEMP}/initrd-temp/linuxrc"
 358         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 359         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 360         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 361 }
 362
 363 calc_initrd_size() {
 364         local TEST
 365         cd ${TEMP}/initrd-temp/
 366         TEST=`du -sk 2> /dev/null`
 367         echo $TEST | cut "-d " -f1
 368 }
 369
 370 create_initrd() {
 371         local MOD_EXT
 372
 373         print_info 1 "initrd: >> Initializing..."
 374         create_base_initrd_sys
 375
 376         if [ "${NOINITRDMODULES}" = '' ]
 377         then
 378                 print_info 1 "        >> Copying modules..."
 379                 create_initrd_modules
 380         else
 381                 print_info 1 "initrd: Not copying modules..."
 382         fi
 383
 384         print_info 1 "        >> Copying auxilary files..."
 385         create_initrd_aux
 386
 387         INITRD_CALC_SIZE=`calc_initrd_size`
 388         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 389         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 390         print_info 1 "        >> Creating loopback filesystem..."
 391         create_initrd_loop ${INITRD_SIZE}
 392
 393         print_info 1 "        >> Moving initrd files to the loopback..."
 394         move_initrd_to_loop
 395
 396         print_info 1 "        >> Cleaning up and compressing the initrd..."
 397         create_initrd_unmount_loop
 398
 399         if [ "${COMPRESS_INITRD}" ]
 400         then
 401                 gzip -f -9 ${TMPDIR}/initrd-${KV}
 402                 mv ${TMPDIR}/initrd-${KV}.gz ${TMPDIR}/initrd-${KV}
 403         fi
 404
 405         if [ "${BOOTSPLASH}" -eq "1" ]
 406         then
 407                 if [ -x /sbin/splash ]
 408                 then
 409                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 410                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 411                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 412                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 413                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 414                         do
 415                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 416                                 then
 417                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TMPDIR}/initrd-${KV} ||
 418                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 419                                 else
 420                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 421                                 fi
 422                         done
 423                 else
 424                         print_warning 1 '        >> No bootsplash detected; skipping!'
 425                 fi
 426         fi
 427         if ! isTrue "${CMD_NOINSTALL}"
 428         then
 429                 cp ${TMPDIR}/initrd-${KV} ${BOOTDIR}/initrd-${KNAME}-${ARCH}-${KV} ||
 430                         gen_die 'Could not copy the initrd to ${BOOTDIR}!'
 431         fi
 432
 433         # Pegasos hack for merging the initrd into the kernel at compile time
 434         [ "${KERNEL_MAKE_DIRECTIVE}" == 'zImage.initrd' -a "${GENERATE_Z_IMAGE}" = '1' ] ||
 435                 [ "${KERNEL_MAKE_DIRECTIVE_2}" == 'zImage.initrd' -a "${GENERATE_Z_IMAGE}" = '1' ] &&
 436                 cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/arch/${ARCH}/boot/images/ramdisk.image.gz &&
 437                 rm ${TMPDIR}/initrd-${KV}
 438
 439         # Mips also mimics Pegasos to merge the initrd into the kernel
 440         [ ${BUILD_INITRAMFS} -eq 1 ] \
 441                 && cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/mips/ramdisk/initrd.img.gz
 442 }