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} >> "${LOGFILE}" 2>&1 ||
  10                 gen_die "Could not zero initrd-${KV}"
  11         mke2fs -F -N750 -q "${TMPDIR}/initrd-${KV}" >> "${LOGFILE}" 2>&1 ||
  12                 gen_die "Could not format initrd-${KV}!"
  13         mount -t ext2 -o loop "${TMPDIR}/initrd-${KV}" "${TEMP}/initrd-mount" >> "${LOGFILE}" 2>&1 ||
  14                 gen_die 'Could not mount the initrd filesystem!'
  15 }
  16
  17 create_initrd_unmount_loop() {
  18         cd ${TEMP}
  19         umount "${TEMP}/initrd-mount" ||
  20                 gen_die 'Could not unmount initrd system!'
  21 }
  22
  23 move_initrd_to_loop() {
  24         cd "${TEMP}/initrd-temp"
  25         mv * "${TEMP}/initrd-mount" >> ${LOGFILE} 2>&1
  26 }
  27
  28 # check for static linked file with objdump
  29 is_static() {
  30         LANG="C" LC_ALL="C" objdump -T $1 2>&1 | grep "not a dynamic object" > /dev/null
  31         return $?
  32 }
  33
  34 create_base_initrd_sys() {
  35         rm -rf "${TEMP}/initrd-temp" > /dev/null
  36         mkdir -p ${TEMP}/initrd-temp/dev
  37         mkdir -p ${TEMP}/initrd-temp/bin
  38         mkdir -p ${TEMP}/initrd-temp/etc
  39         mkdir -p ${TEMP}/initrd-temp/usr
  40         mkdir -p ${TEMP}/initrd-temp/proc
  41         mkdir -p ${TEMP}/initrd-temp/temp
  42         mkdir -p ${TEMP}/initrd-temp/sys
  43         mkdir -p ${TEMP}/initrd-temp/.initrd
  44         mkdir -p ${TEMP}/initrd-temp/var/lock/dmraid
  45         ln -s bin ${TEMP}/initrd-temp/sbin
  46         ln -s ../bin ${TEMP}/initrd-temp/usr/bin
  47         ln -s ../bin ${TEMP}/initrd-temp/usr/sbin
  48
  49         echo "/dev/ram0     /           ext2    defaults        0 0" > ${TEMP}/initrd-temp/etc/fstab
  50         echo "proc          /proc       proc    defaults    0 0" >> ${TEMP}/initrd-temp/etc/fstab
  51
  52         cd ${TEMP}/initrd-temp/dev
  53         MAKEDEV std
  54         MAKEDEV console
  55
  56         if [ "${DISKLABEL}" -eq '1' ]; then
  57                 cp "${BLKID_BINCACHE}" "${TEMP}/initrd-temp/bin/blkid.bz2" ||
  58                         gen_die 'Could not copy blkid from bincache!'
  59                 bunzip2 "${TEMP}/initrd-temp/bin/blkid.bz2" ||
  60                         gen_die 'Could not uncompress blkid!'
  61                 chmod +x "${TEMP}/initrd-temp/bin/blkid"
  62         fi
  63
  64         tar -xjf "${BUSYBOX_BINCACHE}" -C "${TEMP}/initrd-temp/bin" busybox ||
  65                 gen_die 'Could not extract busybox bincache!'
  66         chmod +x "${TEMP}/initrd-temp/bin/busybox"
  67
  68         # DMRAID
  69         if [ "${DMRAID}" -eq '1' ]
  70         then
  71                 print_info 1 'DMRAID: Adding support (compiling binaries)...'
  72                 compile_dmraid
  73                 /bin/tar -jxpf "${DMRAID_BINCACHE}" -C "${TEMP}/initrd-temp" ||
  74                         gen_die "Could not extract dmraid binary cache!";
  75         fi
  76
  77         # LVM
  78         if [ "${LVM}" -eq '1' ]
  79         then
  80                 if [ -e '/sbin/lvm' ] && LC_ALL="C" ldd /sbin/lvm|grep -q 'not a dynamic executable';
  81                 then
  82                         print_info 1 'LVM: Adding support (using local static binaries)...'
  83                         cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
  84                                 gen_die 'Could not copy over lvm!'
  85                 else
  86                         print_info 1 'LVM: Adding support (compiling binaries)...'
  87                         compile_lvm
  88
  89                         /bin/tar -jxpf "${LVM_BINCACHE}" -C "${TEMP}/initrd-temp" ||
  90                                 gen_die "Could not extract lvm binary cache!";
  91                         mv ${TEMP}/initrd-temp/bin/lvm.static ${TEMP}/initrd-temp/bin/lvm ||
  92                                 gen_die 'LVM error: Could not move lvm.static to lvm!'
  93                 fi
  94                 for i in vgchange vgscan; do
  95                         ln  ${TEMP}/initrd-temp/bin/lvm ${TEMP}/initrd-temp/bin/$i ||
  96                                 gen_die "LVM error: Could not link ${i}!"
  97                 done
  98                 mkdir -p ${TEMP}/initrd-temp/etc/lvm
  99                 if [ -x /sbin/lvm ]
 100                 then
 101 #                       lvm dumpconfig 2>&1 > /dev/null || gen_die 'Could not copy over lvm.conf!'
 102 #                       ret=$?
 103 #                       if [ ${ret} != 0 ]
 104 #                       then
 105                                 cp /etc/lvm/lvm.conf "${TEMP}/initrd-temp/etc/lvm/" ||
 106                                         gen_die 'Could not copy over lvm.conf!'
 107 #                       else
 108 #                               gen_die 'Could not copy over lvm.conf!'
 109 #                       fi
 110                 fi
 111         fi
 112
 113         # EVMS
 114         if [ "${EVMS}" -eq '1' ]
 115         then
 116                 if [ -e '/sbin/evms_activate' ]
 117                 then
 118                         print_info 1 'EVMS: Adding support...'
 119                         mkdir -p ${TEMP}/initrd-temp/lib
 120                         mkdir -p ${TEMP}/initrd-temp/sbin
 121                         mkdir -p ${TEMP}/initrd-temp/etc
 122                         mkdir -p ${TEMP}/initrd-temp/bin
 123                         cp -a /lib/ld-* "${TEMP}/initrd-temp/lib" \
 124                                 || gen_die 'Could not copy files for EVMS!'
 125                         if [ -n "`ls /lib/libgcc_s*`" ]
 126                         then
 127                                 cp -a /lib/libgcc_s* "${TEMP}/initrd-temp/lib" \
 128                                         || gen_die 'Could not copy files for EVMS!'
 129                         fi
 130                         cp -a /lib/libc-* /lib/libc.* "${TEMP}/initrd-temp/lib" \
 131                                 || gen_die 'Could not copy files for EVMS!'
 132                         cp -a /lib/libdl-* /lib/libdl.* "${TEMP}/initrd-temp/lib" \
 133                                 || gen_die 'Could not copy files for EVMS!'
 134                         cp -a /lib/libpthread* "${TEMP}/initrd-temp/lib" \
 135                                 || gen_die 'Could not copy files for EVMS!'
 136                         cp -a /lib/libuuid*so* "${TEMP}/initrd-temp/lib" \
 137                                 || gen_die 'Could not copy files for EVMS!'
 138                         cp -a /lib/libevms*so* "${TEMP}/initrd-temp/lib" \
 139                                 || gen_die 'Could not copy files for EVMS!'
 140                         cp -a /lib/evms "${TEMP}/initrd-temp/lib" \
 141                                 || gen_die 'Could not copy files for EVMS!'
 142                         cp -a /lib/evms/* "${TEMP}/initrd-temp/lib/evms" \
 143                                 || gen_die 'Could not copy files for EVMS!'
 144                         cp -a /etc/evms.conf "${TEMP}/initrd-temp/etc" \
 145                                 || gen_die 'Could not copy files for EVMS!'
 146                         cp /sbin/evms_activate "${TEMP}/initrd-temp/sbin" \
 147                                 || gen_die 'Could not copy over evms_activate!'
 148                         # Fix EVMS complaining that it cant find the swap utilities.
 149                         # These are not required in the initrd
 150                         for swap_libs in "${TEMP}/initrd-temp/lib/evms/*/swap*.so"
 151                         do
 152                                 rm ${swap_libs}
 153                         done
 154                 fi
 155         fi
 156
 157         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 158         grep gunzip gzip ln ls loadkmap losetup lsmod mdev mkdir mknod more mount \
 159         mv pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true \
 160         umount uname xargs yes zcat chmod chown cut kill killall; do
 161                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 162                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 163                         gen_die "Busybox error: could not link ${i}!"
 164         done
 165
 166         if isTrue ${LUKS}
 167         then
 168                 if is_static /bin/cryptsetup
 169                 then
 170                         print_info 1 "Including LUKS support"
 171                         rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
 172                         cp /bin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
 173                         chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
 174                 elif is_static /sbin/cryptsetup
 175                 then
 176                         print_info 1 "Including LUKS support"
 177                         rm -f ${TEMP}/initrd-temp/sbin/cryptsetup
 178                         cp /sbin/cryptsetup ${TEMP}/initrd-temp/sbin/cryptsetup
 179                         chmod +x "${TEMP}/initrd-temp/sbin/cryptsetup"
 180                 else
 181                         print_info 1 "LUKS support requires static cryptsetup at /bin/cryptsetup or /sbin/cryptsetup"
 182                         print_info 1 "Not including LUKS support"
 183                 fi
 184         fi
 185 }
 186
 187 print_list() {
 188         local x
 189         for x in ${*}
 190         do
 191                 echo ${x}
 192         done
 193 }
 194
 195 create_initrd_modules() {
 196         local group
 197         local group_modules
 198
 199         if [ "${PAT}" -gt "4" ]
 200         then
 201                 MOD_EXT=".ko"
 202         else
 203                 MOD_EXT=".o"
 204         fi
 205
 206         print_info 2 "initrd: >> Searching for modules..."
 207
 208         if [ "${INSTALL_MOD_PATH}" != '' ]
 209         then
 210                 cd ${INSTALL_MOD_PATH}
 211         else
 212                 cd /
 213         fi
 214
 215         for i in `gen_dep_list`
 216         do
 217                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" 2>/dev/null| head -n 1`
 218                 if [ -z "${mymod}" ]
 219                 then
 220                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 221                         continue;
 222                 fi
 223                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 224                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 225         done
 226
 227         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp 2>/dev/null
 228
 229         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 230         for group_modules in ${!MODULES_*}; do
 231                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 232                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 233         done
 234 }
 235
 236 create_initrd_aux() {
 237         if [ -f "${CMD_LINUXRC}" ]
 238         then
 239                 cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
 240                 print_info 2 "        >> Copying user specified linuxrc: ${CMD_LINUXRC}"
 241         else
 242                 if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 243                 then
 244                         cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 245                 else
 246                         cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 247                 fi
 248         fi
 249
 250         # Make sure it's executable
 251         chmod 0755 "${TEMP}/initrd-temp/linuxrc"
 252
 253         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 254         then
 255                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 256         else
 257                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 258         fi
 259
 260         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 261         then
 262                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 263         else
 264                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 265         fi
 266
 267         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 268         for group_modules in ${!MODULES_*}; do
 269                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 270                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 271         done
 272         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 273
 274         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 275         then
 276                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 277         else
 278                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 279         fi
 280         if isTrue $CMD_DOKEYMAPAUTO
 281         then
 282                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 283         fi
 284         if isTrue $CMD_KEYMAP
 285         then
 286                 mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 287                 /bin/tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 288         fi
 289         if isTrue $CMD_SLOWUSB
 290         then
 291                 echo 'MY_HWOPTS="${MY_HWOPTS} slowusb"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 292         fi
 293
 294         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 295         cd ${OLDPWD}
 296         chmod +x "${TEMP}/initrd-temp/linuxrc"
 297         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 298         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 299         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 300 }
 301
 302 calc_initrd_size() {
 303         local TEST
 304         cd ${TEMP}/initrd-temp/
 305         TEST=`du -sk 2> /dev/null`
 306         echo $TEST | cut "-d " -f1
 307 }
 308
 309 create_initrd() {
 310         local MOD_EXT
 311
 312         print_info 1 "initrd: >> Initializing..."
 313         create_base_initrd_sys
 314
 315         if [ "${NOINITRDMODULES}" -eq '0' ]
 316         then
 317                 print_info 1 "        >> Copying modules..."
 318                 create_initrd_modules
 319         else
 320                 print_info 1 "initrd: Not copying modules..."
 321         fi
 322
 323         print_info 1 "        >> Copying auxilary files..."
 324         create_initrd_aux
 325
 326         INITRD_CALC_SIZE=`calc_initrd_size`
 327         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 250`
 328         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 329         print_info 1 "        >> Creating loopback filesystem..."
 330         create_initrd_loop ${INITRD_SIZE}
 331
 332         print_info 1 "        >> Moving initrd files to the loopback..."
 333         move_initrd_to_loop
 334
 335         print_info 1 "        >> Cleaning up and compressing the initrd..."
 336         create_initrd_unmount_loop
 337
 338         if [ "${COMPRESS_INITRD}" ]
 339         then
 340                 gzip -f -9 ${TMPDIR}/initrd-${KV}
 341                 mv ${TMPDIR}/initrd-${KV}.gz ${TMPDIR}/initrd-${KV}
 342         fi
 343
 344         if ! isTrue "${CMD_NOINSTALL}"
 345         then
 346                 copy_image_with_preserve "initrd" \
 347                         "${TMPDIR}/initrd-${KV}" \
 348                         "initrd-${KNAME}-${ARCH}-${KV}"
 349         fi
 350
 351 #       if [ "${ENABLE_PEGASOS_HACKS}" = 'yes' ]
 352 #       then
 353 #               # Pegasos hack for merging the initramfs into the kernel at compile time
 354 #               cp ${TMPDIR}/initrd-${KV} ${KERNEL_DIR}/arch/${ARCH}/boot/images/ramdisk.image.gz &&
 355 #               rm ${TMPDIR}/initrd-${KV}
 356 #       fi
 357 }