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 ${TEMP}/initrd-mount ||
   8                 gen_die 'Could not create loopback mount directory!'
   9         dd if=/dev/zero of=${TEMP}/initrd-${KV} bs=1k count=${1} >> "${DEBUGFILE}" 2>&1 ||
  10                 gen_die "Could not zero initrd-${KV}"
  11         mke2fs -F -N500 -q "${TEMP}/initrd-${KV}" >> "${DEBUGFILE}" 2>&1 ||
  12                 gen_die "Could not format initrd-${KV}!"
  13         mount -t ext2 -o loop "${TEMP}/initrd-${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         ln -s bin ${TEMP}/initrd-temp/sbin
  41         ln -s ../bin ${TEMP}/initrd-temp/usr/bin
  42         ln -s ../bin ${TEMP}/initrd-temp/usr/sbin
  43
  44         echo "/dev/ram0     /           ext2    defaults" > ${TEMP}/initrd-temp/etc/fstab
  45         echo "proc          /proc       proc    defaults    0 0" >> ${TEMP}/initrd-temp/etc/fstab
  46
  47         echo "REGISTER        .*           MKOLDCOMPAT" > ${TEMP}/initrd-temp/etc/devfsd.conf
  48         echo "UNREGISTER      .*           RMOLDCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  49         echo "REGISTER        .*           MKNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  50         echo "UNREGISTER      .*           RMNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  51
  52         cd ${TEMP}/initrd-temp/dev
  53         MAKEDEV std
  54         MAKEDEV console
  55
  56         cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.bz2" ||
  57                 gen_die 'Could not copy busybox from bincache!'
  58         bunzip2 "${TEMP}/initrd-temp/bin/busybox.bz2" ||
  59                 gen_die 'Could not uncompress busybox!'
  60         chmod +x "${TEMP}/initrd-temp/bin/busybox"
  61
  62         if [ "${NOINITRDMODULES}" = '' ]
  63         then
  64                 if [ "${PAT}" -gt "4" ]
  65                 then
  66                         cp "${MODULE_INIT_TOOLS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
  67                                 gen_die 'Could not copy insmod.static from bincache!'
  68                 else
  69                         cp "${MODUTILS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
  70                                 gen_die 'Could not copy insmod.static from bincache'
  71                 fi
  72
  73                 bunzip2 "${TEMP}/initrd-temp/bin/insmod.static.bz2" ||
  74                         gen_die 'Could not uncompress insmod.static!'
  75                 mv "${TEMP}/initrd-temp/bin/insmod.static" "${TEMP}/initrd-temp/bin/insmod"
  76                 chmod +x "${TEMP}/initrd-temp/bin/insmod"
  77         fi
  78
  79         cp "${DEVFSD_BINCACHE}" "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die "could not copy devfsd executable from bincache"
  80         bunzip2 "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die "could not uncompress devfsd"
  81         chmod +x "${TEMP}/initrd-temp/bin/devfsd"
  82
  83         [ "${UDEV}" -eq '1' ] && { tar -jxpf "${UDEV_BINCACHE}" -C "${TEMP}/initrd-temp" ||
  84                 gen_die "Could not extract udev binary cache!"; }
  85                 ln -sf "./udev" "${TEMP}/initrd-temp/bin/udevstart" ||
  86                         gen_die 'Could not symlink udev -> udevstart!'
  87
  88 # We make our own devfsd.conf these days, the default one doesn't work with the stripped
  89 # down devfsd we use with dietlibc
  90 #       cp "${DEVFSD_CONF_BINCACHE}" "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" ||
  91 #               gen_die "could not copy devfsd.conf from bincache"
  92 #       bunzip2 "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" ||
  93 #               gen_die "could not uncompress devfsd.conf"
  94
  95         # LVM2
  96         if [ "${LVM2}" -eq '1' ]
  97         then
  98                 if [ -e '/sbin/lvm' ] && ldd /sbin/lvm|grep -q 'not a dynamic executable';
  99                 then
 100                         print_info 1 'LVM2: Adding support (using local static binaries)...'
 101                         cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
 102                                 gen_die 'Could not copy over lvm!'
 103                         ln "${TEMP}/initrd-temp/bin/lvm" "${TEMP}/initrd-temp/bin/vgscan" ||
 104                                 gen_die 'Could not symlink lvm -> vgscan!'
 105                         ln "${TEMP}/initrd-temp/bin/lvm" "${TEMP}/initrd-temp/bin/vgchange" ||
 106                                 gen_die 'Could not symlink lvm -> vgchange!'
 107                 else
 108                         print_info 1 'LVM2: Adding support (compiling binaries)...'
 109                         compile_lvm2
 110
 111                         tar -jxpf "${LVM2_BINCACHE}" -C "${TEMP}/initrd-temp" ||
 112                                 gen_die "Could not extract lvm2 binary cache!";
 113                         mv ${TEMP}/initrd-temp/bin/lvm.static ${TEMP}/initrd-temp/bin/lvm ||
 114                                 gen_die 'LVM2 error: Could not move lvm.static to lvm!'
 115                         for i in vgchange vgscan; do
 116                                 ln  ${TEMP}/initrd-temp/bin/lvm ${TEMP}/initrd-temp/bin/$i ||
 117                                         gen_die "LVM2 error: Could not link ${i}!"
 118                         done
 119                 fi
 120         else # Deprecation warning; remove in a few versions.
 121                 if [ -e '/sbin/lvm' ]
 122                 then
 123                         if ldd /sbin/lvm|grep -q 'not a dynamic executable';
 124                         then
 125                                 print_warning 1 'LVM2: For support, use --lvm2!'
 126                         fi
 127                 fi
 128         fi
 129
 130         # EVMS2
 131         if [ "${CMD_EVMS2}" -eq '1' ]
 132         then
 133                 if [ -e '/sbin/evms_activate' ]
 134                 then
 135                         print_info 1 'EVMS2: Adding support...'
 136                         mkdir -p ${TEMP}/initrd-temp/lib
 137                         cp -a /lib/ld-* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 138                         cp -a /lib/libc-* /lib/libc.* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 139                         cp -a /lib/libdl-* /lib/libdl.* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 140                         cp -a /lib/libpthread* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 141                         cp -a /lib/libuuid*so* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 142                         cp -a /lib/libevms*so* "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 143                         cp -a /lib/evms "${TEMP}/initrd-temp/lib" || gen_die 'Could not copy files for EVMS2!'
 144                         cp -a /lib/evms/* "${TEMP}/initrd-temp/lib/evms" || gen_die 'Could not copy files for EVMS2!'
 145                         cp -a /etc/evms.conf "${TEMP}/initrd-temp/etc" || gen_die 'Could not copy files for EVMS2!'
 146                         cp /sbin/evms_activate "${TEMP}/initrd-temp/bin/evms_activate" || gen_die 'Could not copy over vgscan!'
 147                         # Fix EVMS2 complaining that it cant find the swap utilities.
 148                         # These are not required in the initrd
 149                         for swap_libs in "${TEMP}/initrd-temp/lib/evms/*/swap*.so"
 150                         do
 151                                 rm $swap_libs
 152                         done
 153                 fi
 154         fi
 155
 156         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 157         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 158         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 159         xargs yes zcat chmod chown cut kill killall; do
 160                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 161                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 162                         gen_die "Busybox error: could not link ${i}!"
 163         done
 164 }
 165
 166 print_list()
 167 {
 168         local x
 169         for x in ${*}
 170         do
 171                 echo ${x}
 172         done
 173 }
 174
 175 create_initrd_modules() {
 176         local group
 177         local group_modules
 178
 179         if [ "${PAT}" -gt "4" ]
 180         then
 181                 MOD_EXT=".ko"
 182         else
 183                 MOD_EXT=".o"
 184         fi
 185
 186         print_info 2 "initrd: >> Searching for modules..."
 187         if [ "${INSTALL_MOD_PATH}" != '' ]
 188         then
 189           cd ${INSTALL_MOD_PATH}
 190         else
 191           cd /
 192         fi
 193         for i in `gen_dep_list`
 194         do
 195                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 196                 if [ -z "${mymod}" ]
 197                 then
 198                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 199                         continue;
 200                 fi
 201                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 202                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 203         done
 204
 205         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 206
 207         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 208         for group_modules in ${!MODULES_*}; do
 209                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 210                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 211         done
 212 }
 213
 214 create_initrd_aux() {
 215         if [ -f "${CMD_LINUXRC}" ]
 216         then
 217                 cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
 218                 print_info 2 "        >> Copying user specified linuxrc: ${CMD_LINUXRC}"
 219         else
 220                 if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 221                 then
 222                         cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 223                 else
 224                         cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 225                 fi
 226         fi
 227
 228         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 229         then
 230                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 231         else
 232                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 233         fi
 234
 235         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 236         then
 237                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 238         else
 239                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 240         fi
 241
 242         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 243         for group_modules in ${!MODULES_*}; do
 244                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 245                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 246         done
 247         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 248
 249         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 250         then
 251                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 252         else
 253                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 254         fi
 255         if isTrue $CMD_DOKEYMAPAUTO
 256         then
 257                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 258         fi
 259         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 260         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 261
 262         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 263         cd ${OLDPWD}
 264         chmod +x "${TEMP}/initrd-temp/linuxrc"
 265         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 266         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 267         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 268 }
 269
 270 calc_initrd_size() {
 271         local TEST
 272         cd ${TEMP}/initrd-temp/
 273         TEST=`du -sk 2> /dev/null`
 274         echo $TEST | cut "-d " -f1
 275 }
 276
 277 create_initrd() {
 278         local MOD_EXT
 279
 280         print_info 1 "initrd: >> Initializing..."
 281         create_base_initrd_sys
 282
 283         if [ "${NOINITRDMODULES}" = '' ]
 284         then
 285                 print_info 1 "        >> Copying modules..."
 286                 create_initrd_modules
 287         else
 288                 print_info 1 "initrd: Not copying modules..."
 289         fi
 290
 291         print_info 1 "        >> Copying auxilary files..."
 292         create_initrd_aux
 293
 294         INITRD_CALC_SIZE=`calc_initrd_size`
 295         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 296         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 297
 298         print_info 1 "        >> Creating loopback filesystem..."
 299         create_initrd_loop ${INITRD_SIZE}
 300
 301         print_info 1 "        >> Moving initrd files to the loopback..."
 302         move_initrd_to_loop
 303
 304         print_info 1 "        >> Cleaning up and compressing the initrd..."
 305         create_initrd_unmount_loop
 306
 307         if [ "${COMPRESS_INITRD}" ]
 308         then
 309                 gzip -f -9 ${TEMP}/initrd-${KV}
 310                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 311         fi
 312
 313         if [ "${BOOTSPLASH}" -eq "1" ]
 314         then
 315                 if [ -x /sbin/splash ]
 316                 then
 317                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 318                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 319                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 320                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 321                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 322                         do
 323                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 324                                 then
 325                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} ||
 326                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 327                                 else
 328                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 329                                 fi
 330                         done
 331                 else
 332                         print_warning 1 '        >> No bootsplash detected; skipping!'
 333                 fi
 334         fi
 335         if ! isTrue "${CMD_NOINSTALL}"
 336         then
 337                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} ||
 338                         gen_die 'Could not copy the initrd to /boot!'
 339         fi
 340 }