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
  86 # We make our own devfsd.conf these days, the default one doesn't work with the stripped
  87 # down devfsd we use with dietlibc
  88 #       cp "${DEVFSD_CONF_BINCACHE}" "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" ||
  89 #               gen_die "could not copy devfsd.conf from bincache"
  90 #       bunzip2 "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" ||
  91 #               gen_die "could not uncompress devfsd.conf"
  92
  93         # LVM2
  94         if [ -e '/sbin/vgscan.static' -a -e '/sbin/vgchange.static' ]
  95         then
  96                 if [ "${CMD_NOLVM2}" != '1' ]
  97                 then
  98                         cp /sbin/vgscan.static "${TEMP}/initrd-temp/bin/vgscan" ||
  99                                 gen_die 'Could not copy over vgscan!'
 100                         cp /sbin/vgchange.static "${TEMP}/initrd-temp/bin/vgchange" ||
 101                                 gen_die 'Could not copy over vgchange!'
 102                 fi
 103 #       else
 104 #               print_warning 1 "initrd: No LVM2 static binaries found; skipping support..."
 105         fi
 106
 107         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 108         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 109         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 110         xargs yes zcat chmod chown cut kill killall; do
 111                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 112                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 113                         gen_die "Busybox error: could not link ${i}!"
 114         done
 115 }
 116
 117 print_list()
 118 {
 119         local x
 120         for x in ${*}
 121         do
 122                 echo ${x}
 123         done
 124 }
 125
 126 create_initrd_modules() {
 127         local group
 128         local group_modules
 129
 130         if [ "${PAT}" -gt "4" ]
 131         then
 132                 MOD_EXT=".ko"
 133         else
 134                 MOD_EXT=".o"
 135         fi
 136
 137         print_info 2 "initrd: >> Searching for modules..."
 138         if [ "${INSTALL_MOD_PATH}" != '' ]
 139         then
 140           cd ${INSTALL_MOD_PATH}
 141         else
 142           cd /
 143         fi
 144         for i in `gen_dep_list`
 145         do
 146                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 147                 if [ -z "${mymod}" ]
 148                 then
 149                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 150                         continue;
 151                 fi
 152                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 153                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 154         done
 155
 156         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 157
 158         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 159         for group_modules in ${!MODULES_*}; do
 160                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 161                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 162         done
 163 }
 164
 165 create_initrd_aux() {
 166         if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 167         then
 168                 cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 169         else
 170                 cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 171         fi
 172
 173         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 174         then
 175                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 176         else
 177                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 178         fi
 179
 180         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 181         then
 182                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 183         else
 184                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 185         fi
 186
 187         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 188         for group_modules in ${!MODULES_*}; do
 189                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 190                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 191         done
 192         echo "\"" >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 193
 194         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 195         then
 196                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 197         else
 198                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 199         fi
 200         if isTrue $CMD_DOKEYMAPAUTO
 201         then
 202                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 203         fi
 204         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 205         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 206
 207         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 208         cd ${OLDPWD}
 209         chmod +x "${TEMP}/initrd-temp/linuxrc"
 210         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 211         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 212         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 213 }
 214
 215 calc_initrd_size() {
 216         local TEST
 217         cd ${TEMP}/initrd-temp/
 218         TEST=`du -sk 2> /dev/null`
 219         echo $TEST | cut "-d " -f1
 220 }
 221
 222 create_initrd() {
 223         local MOD_EXT
 224
 225         print_info 1 "initrd: >> Initializing..."
 226         create_base_initrd_sys
 227
 228         if [ "${NOINITRDMODULES}" = '' ]
 229         then
 230                 print_info 1 "        >> Copying modules..."
 231                 create_initrd_modules
 232         else
 233                 print_info 1 "initrd: Not copying modules..."
 234         fi
 235
 236         print_info 1 "        >> Copying auxilary files..."
 237         create_initrd_aux
 238
 239         INITRD_CALC_SIZE=`calc_initrd_size`
 240         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 241         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 242
 243         print_info 1 "        >> Creating loopback filesystem..."
 244         create_initrd_loop ${INITRD_SIZE}
 245
 246         print_info 1 "        >> Moving initrd files to the loopback..."
 247         move_initrd_to_loop
 248
 249         print_info 1 "        >> Cleaning up and compressing the initrd..."
 250         create_initrd_unmount_loop
 251
 252         if [ "${COMPRESS_INITRD}" ]
 253         then
 254                 gzip -f -9 ${TEMP}/initrd-${KV}
 255                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 256         fi
 257
 258         if [ "${BOOTSPLASH}" -eq "1" ]
 259         then
 260                 if [ -x /sbin/splash ]
 261                 then
 262                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 263                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 264                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 265                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 266                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 267                         do
 268                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 269                                 then
 270                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} ||
 271                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 272                                 else
 273                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 274                                 fi
 275                         done
 276                 else
 277                         print_warning 1 '        >> No bootsplash detected; skipping!'
 278                 fi
 279         fi
 280         if ! isTrue "${CMD_NOINSTALL}"
 281         then
 282                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} ||
 283                         gen_die 'Could not copy the initrd to /boot!'
 284         fi
 285 }