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