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         # Suspend
 148         if [ "${SUSPEND}" = '1' ]
 149         then
 150                 print_info 1 'SUSPEND: Adding support (compiling binaries)...'
 151                 compile_suspend
 152                 /bin/tar -jxpf "${SUSPEND_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 153                         gen_die "Could not extract suspend binary cache!"
 154                 mkdir -p "${TEMP}/initrd-temp/etc"
 155                 cp -f /etc/suspend.conf "${TEMP}/initrd-temp/etc" ||
 156                         gen_die 'Could not copy /etc/suspend.conf'
 157         fi
 158
 159         # DMRAID
 160         if [ "${DMRAID}" = '1' ]
 161         then
 162                 print_info 1 'DMRAID: Adding support (compiling binaries)...'
 163                 compile_dmraid
 164                 /bin/tar -jxpf "${DMRAID_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 165                         gen_die "Could not extract dmraid binary cache!";
 166         fi
 167
 168         # LVM2
 169         if [ "${LVM2}" = '1' ]
 170         then
 171                 if [ -e '/sbin/lvm' ] && ldd /sbin/lvm|grep -q 'not a dynamic executable';
 172                 then
 173                         print_info 1 'LVM2: Adding support (using local static binaries)...'
 174                         cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
 175                                 gen_die 'Could not copy over lvm!'
 176                 else
 177                         print_info 1 'LVM2: Adding support (compiling binaries)...'
 178                         compile_lvm2
 179
 180                         /bin/tar -jxpf "${LVM2_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 181                                 gen_die "Could not extract lvm2 binary cache!";
 182                         mv ${TEMP}/initrd-temp/bin/lvm.static ${TEMP}/initrd-temp/bin/lvm ||
 183                                 gen_die 'LVM2 error: Could not move lvm.static to lvm!'
 184                 fi
 185                 for i in vgchange vgscan; do
 186                         ln  ${TEMP}/initrd-temp/bin/lvm ${TEMP}/initrd-temp/bin/$i ||
 187                                 gen_die "LVM2 error: Could not link ${i}!"
 188                 done
 189                 mkdir -p ${TEMP}/initrd-temp/etc/lvm
 190                 cp /etc/lvm/lvm.conf "${TEMP}/initrd-temp/etc/lvm/lvm.conf" ||
 191                         gen_die 'Could not copy over lvm.conf!'
 192         fi
 193
 194         # EVMS2
 195         if [ "${EVMS2}" = '1' ]
 196         then
 197                 if [ -e '/sbin/evms_activate' ]
 198                 then
 199                         print_info 1 'EVMS2: Adding support...'
 200                         mkdir -p ${TEMP}/initrd-temp/lib
 201                         mkdir -p ${TEMP}/initrd-temp/sbin
 202                         mkdir -p ${TEMP}/initrd-temp/etc
 203                         mkdir -p ${TEMP}/initrd-temp/bin
 204                         cp -a /lib/ld-* "${TEMP}/initrd-temp/lib" \
 205                                 || gen_die 'Could not copy files for EVMS2!'
 206                         if [ -n "`ls /lib/libgcc_s*`" ]
 207                         then
 208                                 cp -a /lib/libgcc_s* "${TEMP}/initramfs-evms2-temp/lib" \
 209                                         || gen_die 'Could not copy files for EVMS2!'
 210                         fi
 211                         cp -a /lib/libc-* /lib/libc.* "${TEMP}/initrd-temp/lib" \
 212                                 || gen_die 'Could not copy files for EVMS2!'
 213                         cp -a /lib/libdl-* /lib/libdl.* "${TEMP}/initrd-temp/lib" \
 214                                 || gen_die 'Could not copy files for EVMS2!'
 215                         cp -a /lib/libpthread* "${TEMP}/initrd-temp/lib" \
 216                                 || gen_die 'Could not copy files for EVMS2!'
 217                         cp -a /lib/libuuid*so* "${TEMP}/initrd-temp/lib" \
 218                                 || gen_die 'Could not copy files for EVMS2!'
 219                         cp -a /lib/libevms*so* "${TEMP}/initrd-temp/lib" \
 220                                 || gen_die 'Could not copy files for EVMS2!'
 221                         cp -a /lib/evms "${TEMP}/initrd-temp/lib" \
 222                                 || gen_die 'Could not copy files for EVMS2!'
 223                         cp -a /lib/evms/* "${TEMP}/initrd-temp/lib/evms" \
 224                                 || gen_die 'Could not copy files for EVMS2!'
 225                         cp -a /etc/evms.conf "${TEMP}/initrd-temp/etc" \
 226                                 || gen_die 'Could not copy files for EVMS2!'
 227                         cp /sbin/evms_activate "${TEMP}/initrd-temp/sbin" \
 228                                 || gen_die 'Could not copy over evms_activate!'
 229                         # Fix EVMS2 complaining that it cant find the swap utilities.
 230                         # These are not required in the initrd
 231                         for swap_libs in "${TEMP}/initrd-temp/lib/evms/*/swap*.so"
 232                         do
 233                                 rm ${swap_libs}
 234                         done
 235                 fi
 236         fi
 237
 238         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 239         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 240         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 241         xargs yes zcat chmod chown cut kill killall; do
 242                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 243                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 244                         gen_die "Busybox error: could not link ${i}!"
 245         done
 246
 247         if isTrue ${LUKS}
 248         then
 249                 if is_static /bin/cryptsetup
 250                 then
 251                         print_info 1 "Including LUKS support"
 252                         rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
 253                         cp /bin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
 254                         chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
 255                 else
 256                         print_info 1 "LUKS support requires static cryptsetup at /bin/cryptsetup"
 257                         print_info 1 "Not including LUKS support"
 258                 fi
 259         fi
 260 }
 261
 262 print_list() {
 263         local x
 264         for x in ${*}
 265         do
 266                 echo ${x}
 267         done
 268 }
 269
 270 create_initrd_modules() {
 271         local group
 272         local group_modules
 273
 274         if [ "${PAT}" -gt "4" ]
 275         then
 276                 MOD_EXT=".ko"
 277         else
 278                 MOD_EXT=".o"
 279         fi
 280
 281         print_info 2 "initrd: >> Searching for modules..."
 282
 283         if [ "${INSTALL_MOD_PATH}" != '' ]
 284         then
 285                 cd ${INSTALL_MOD_PATH}
 286         else
 287                 cd /
 288         fi
 289
 290         for i in `gen_dep_list`
 291         do
 292                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" 2>/dev/null| head -n 1`
 293                 if [ -z "${mymod}" ]
 294                 then
 295                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 296                         continue;
 297                 fi
 298                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 299                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 300         done
 301
 302         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp 2>/dev/null
 303
 304         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 305         for group_modules in ${!MODULES_*}; do
 306                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 307                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 308         done
 309 }
 310
 311 create_initrd_aux() {
 312         if [ -f "${CMD_LINUXRC}" ]
 313         then
 314                 cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
 315                 print_info 2 "        >> Copying user specified linuxrc: ${CMD_LINUXRC}"
 316         else
 317                 if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 318                 then
 319                         cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 320                 else
 321                         cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 322                 fi
 323         fi
 324
 325         # Make sure it's executable
 326         chmod 0755 "${TEMP}/initrd-temp/linuxrc"
 327
 328         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 329         then
 330                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 331         else
 332                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 333         fi
 334
 335         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 336         then
 337                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 338         else
 339                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 340         fi
 341
 342         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 343         for group_modules in ${!MODULES_*}; do
 344                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 345                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 346         done
 347         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 348
 349         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 350         then
 351                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 352         else
 353                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 354         fi
 355         if isTrue $CMD_DOKEYMAPAUTO
 356         then
 357                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 358         fi
 359         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 360         /bin/tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 361         if isTrue $CMD_SLOWUSB
 362         then
 363                 echo 'MY_HWOPTS="${MY_HWOPTS} slowusb"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 364         fi
 365
 366         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 367         cd ${OLDPWD}
 368         chmod +x "${TEMP}/initrd-temp/linuxrc"
 369         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 370         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 371         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 372 }
 373
 374 calc_initrd_size() {
 375         local TEST
 376         cd ${TEMP}/initrd-temp/
 377         TEST=`du -sk 2> /dev/null`
 378         echo $TEST | cut "-d " -f1
 379 }
 380
 381 create_initrd() {
 382         local MOD_EXT
 383
 384         print_info 1 "initrd: >> Initializing..."
 385         create_base_initrd_sys
 386
 387         if [ "${NOINITRDMODULES}" = '' ]
 388         then
 389                 print_info 1 "        >> Copying modules..."
 390                 create_initrd_modules
 391         else
 392                 print_info 1 "initrd: Not copying modules..."
 393         fi
 394
 395         print_info 1 "        >> Copying auxilary files..."
 396         create_initrd_aux
 397
 398         INITRD_CALC_SIZE=`calc_initrd_size`
 399         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 400         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 401         print_info 1 "        >> Creating loopback filesystem..."
 402         create_initrd_loop ${INITRD_SIZE}
 403
 404         print_info 1 "        >> Moving initrd files to the loopback..."
 405         move_initrd_to_loop
 406
 407         print_info 1 "        >> Cleaning up and compressing the initrd..."
 408         create_initrd_unmount_loop
 409
 410         if [ "${COMPRESS_INITRD}" ]
 411         then
 412                 gzip -f -9 ${TMPDIR}/initrd-${KV}
 413                 mv ${TMPDIR}/initrd-${KV}.gz ${TMPDIR}/initrd-${KV}
 414         fi
 415
 416         if [ "${BOOTSPLASH}" -eq "1" ]
 417         then
 418                 if [ -x /sbin/splash ]
 419                 then
 420                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 421                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 422                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 423                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 424                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 425                         do
 426                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 427                                 then
 428                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TMPDIR}/initrd-${KV} ||
 429                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 430                                 else
 431                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 432                                 fi
 433                         done
 434                 else
 435                         print_warning 1 '        >> No bootsplash detected; skipping!'
 436                 fi
 437         fi
 438         if ! isTrue "${CMD_NOINSTALL}"
 439         then
 440                 cp ${TMPDIR}/initrd-${KV} ${BOOTDIR}/initrd-${KNAME}-${ARCH}-${KV} ||
 441                         gen_die 'Could not copy the initrd to ${BOOTDIR}!'
 442         fi
 443
 444         # Pegasos hack for merging the initrd into the kernel at compile time
 445         [ "${KERNEL_MAKE_DIRECTIVE}" == 'zImage.initrd' -a "${GENERATE_Z_IMAGE}" = '1' ] ||
 446                 [ "${KERNEL_MAKE_DIRECTIVE_2}" == 'zImage.initrd' -a "${GENERATE_Z_IMAGE}" = '1' ] &&
 447                 cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/arch/${ARCH}/boot/images/ramdisk.image.gz &&
 448                 rm ${TMPDIR}/initrd-${KV}
 449
 450         # Mips also mimics Pegasos to merge the initrd into the kernel
 451         [ ${BUILD_INITRAMFS} -eq 1 ] \
 452                 && cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/mips/ramdisk/initrd.img.gz
 453 }