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 ${TEMP}/initrd-mount || gen_die 'Could not create loopback mount directory!'
   8         dd if=/dev/zero of=${TEMP}/initrd-${KV} bs=1k count=${1} >> "${DEBUGFILE}" 2>&1 || gen_die "Could not zero initrd-${KV}"
   9         mke2fs -F -N500 -q "${TEMP}/initrd-${KV}" >> "${DEBUGFILE}" 2>&1 || gen_die "Could not format initrd-${KV}!"
  10         mount -t ext2 -o loop "${TEMP}/initrd-${KV}" "${TEMP}/initrd-mount" >> "${DEBUGFILE}" 2>&1 || gen_die 'Could not mount the initrd filesystem!'
  11 }
  12
  13 create_initrd_unmount_loop()
  14 {
  15         cd ${TEMP}
  16         umount "${TEMP}/initrd-mount" || gen_die 'Could not unmount initrd system!'
  17 }
  18
  19 move_initrd_to_loop()
  20 {
  21         cd "${TEMP}/initrd-temp"
  22         mv * "${TEMP}/initrd-mount" >> ${DEBUGFILE} 2>&1
  23 }
  24
  25 create_base_initrd_sys() {
  26         rm -rf "${TEMP}/initrd-temp" > /dev/null
  27         mkdir -p ${TEMP}/initrd-temp/dev
  28         mkdir -p ${TEMP}/initrd-temp/bin
  29         mkdir -p ${TEMP}/initrd-temp/etc
  30         mkdir -p ${TEMP}/initrd-temp/usr
  31         mkdir -p ${TEMP}/initrd-temp/proc
  32         mkdir -p ${TEMP}/initrd-temp/temp
  33         mkdir -p ${TEMP}/initrd-temp/.initrd
  34         ln -s bin ${TEMP}/initrd-temp/sbin
  35         ln -s ../bin ${TEMP}/initrd-temp/usr/bin
  36         ln -s ../bin ${TEMP}/initrd-temp/usr/sbin
  37         echo "/dev/ram0     /           ext2    defaults" > ${TEMP}/initrd-temp/etc/fstab
  38         echo "proc          /proc       proc    defaults    0 0" >> ${TEMP}/initrd-temp/etc/fstab
  39
  40         echo "REGISTER        .*           MKOLDCOMPAT" > ${TEMP}/initrd-temp/etc/devfsd.conf
  41         echo "UNREGISTER      .*           RMOLDCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  42         echo "REGISTER        .*           MKNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  43         echo "UNREGISTER      .*           RMNEWCOMPAT" >> ${TEMP}/initrd-temp/etc/devfsd.conf
  44
  45         cd ${TEMP}/initrd-temp/dev
  46         MAKEDEV std
  47         MAKEDEV console
  48
  49         cp "${BUSYBOX_BINCACHE}" "${TEMP}/initrd-temp/bin/busybox.bz2" || gen_die "could not copy busybox from bincache"
  50         bunzip2 "${TEMP}/initrd-temp/bin/busybox.bz2" || gen_die "could not uncompress busybox"
  51         chmod +x "${TEMP}/initrd-temp/bin/busybox"
  52
  53         if [ "${NOINITRDMODULES}" = '' ]
  54         then
  55                 if [ "${PAT}" -gt "4" ]
  56                 then
  57                         cp "${MODULE_INIT_TOOLS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" || gen_die "could not copy insmod.static from bincache"
  58                 else
  59                         cp "${MODUTILS_BINCACHE}" "${TEMP}/initrd-temp/bin/insmod.static.bz2" || gen_die "could not copy insmod.static from bincache"
  60                 fi
  61
  62                 bunzip2 "${TEMP}/initrd-temp/bin/insmod.static.bz2" || gen_die "could not uncompress insmod.static"
  63                 mv "${TEMP}/initrd-temp/bin/insmod.static" "${TEMP}/initrd-temp/bin/insmod"
  64                 chmod +x "${TEMP}/initrd-temp/bin/insmod"
  65         fi
  66
  67         cp "${DEVFSD_BINCACHE}" "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die "could not copy devfsd executable from bincache"
  68         bunzip2 "${TEMP}/initrd-temp/bin/devfsd.bz2" || gen_die "could not uncompress devfsd"
  69         chmod +x "${TEMP}/initrd-temp/bin/devfsd"
  70
  71 # We make our own devfsd.conf these days, the default one doesn't work with the stripped
  72 # down devfsd we use with dietlibc
  73 #       cp "${DEVFSD_CONF_BINCACHE}" "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" || gen_die "could not copy devfsd.conf from bincache"
  74 #       bunzip2 "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" || gen_die "could not uncompress devfsd.conf"
  75
  76         # LVM2
  77         if [ -e '/sbin/vgscan.static' -a -e '/sbin/vgchange.static' ]
  78         then
  79                 if [ "${CMD_NOLVM2}" -ne '1' ]
  80                 then
  81                         cp /sbin/vgscan.static "${TEMP}/initrd-temp/bin/vgscan" || gen_die 'Could not copy over vgscan!'
  82                         cp /sbin/vgchange.static "${TEMP}/initrd-temp/bin/vgchange" || gen_die 'Could not copy over vgchange!'
  83                 fi
  84 #       else
  85 #               print_warning 1 "initrd: No LVM2 static binaries found; skipping support..."
  86         fi
  87
  88         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
  89         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
  90         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
  91         xargs yes zcat chmod chown cut kill killall; do
  92                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
  93                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i || gen_die "Busybox error: could not link ${i}!"
  94         done
  95 }
  96
  97 print_list()
  98 {
  99         local x
 100         for x in ${*}
 101         do
 102                 echo ${x}
 103         done
 104 }
 105
 106 create_initrd_modules() {
 107         local group
 108         local group_modules
 109
 110         if [ "${PAT}" -gt "4" ]
 111         then
 112                 MOD_EXT=".ko"
 113         else
 114                 MOD_EXT=".o"
 115         fi
 116
 117         print_info 2 "initrd: >> Searching for modules..."
 118         if [ "${INSTALL_MOD_PATH}" != '' ]
 119         then
 120           cd ${INSTALL_MOD_PATH}
 121         else
 122           cd /
 123         fi
 124         for i in `gen_dep_list`
 125         do
 126                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 127                 if [ -z "${mymod}" ]
 128                 then
 129                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 130                         continue;
 131                 fi
 132                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 133                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 134         done
 135
 136         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 137
 138         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 139         for group_modules in ${!MODULES_*}; do
 140                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 141                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 142         done
 143 }
 144
 145 create_initrd_aux() {
 146         if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 147         then
 148                 cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 149         else
 150                 cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 151         fi
 152
 153         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 154         then
 155                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 156         else
 157                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 158         fi
 159
 160         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 161         then
 162                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 163         else
 164                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 165         fi
 166
 167         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 168         for group_modules in ${!MODULES_*}; do
 169                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 170                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 171         done
 172         echo "\"" >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 173
 174         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 175         then
 176                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 177         else
 178                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 179         fi
 180         if isTrue $CMD_DOKEYMAPAUTO
 181         then
 182                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 183         fi
 184         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 185         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 186
 187         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 188         cd ${OLDPWD}
 189         chmod +x "${TEMP}/initrd-temp/linuxrc"
 190         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 191         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 192         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 193 }
 194
 195 calc_initrd_size() {
 196         local TEST
 197         cd ${TEMP}/initrd-temp/
 198         TEST=`du -sk 2> /dev/null`
 199         echo $TEST | cut "-d " -f1
 200 }
 201
 202 create_initrd() {
 203         local MOD_EXT
 204
 205         print_info 1 "initrd: >> Initializing..."
 206         create_base_initrd_sys
 207
 208         if [ "${NOINITRDMODULES}" = '' ]
 209         then
 210                 print_info 1 "        >> Copying modules..."
 211                 create_initrd_modules
 212         else
 213                 print_info 1 "initrd: Not copying modules..."
 214         fi
 215
 216         print_info 1 "        >> Copying auxilary files..."
 217         create_initrd_aux
 218
 219         INITRD_CALC_SIZE=`calc_initrd_size`
 220         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 221         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 222
 223         print_info 1 "        >> Creating loopback filesystem..."
 224         create_initrd_loop ${INITRD_SIZE}
 225
 226         print_info 1 "        >> Moving initrd files to the loopback..."
 227         move_initrd_to_loop
 228
 229         print_info 1 "        >> Cleaning up and compressing the initrd..."
 230         create_initrd_unmount_loop
 231
 232         if [ "${COMPRESS_INITRD}" ]
 233         then
 234                 gzip -f -9 ${TEMP}/initrd-${KV}
 235                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 236         fi
 237
 238         if [ "${BOOTSPLASH}" -eq "1" ]
 239         then
 240                 if [ -x /sbin/splash ]
 241                 then
 242                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 243                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 244                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 245                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 246                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 247                         do
 248                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 249                                 then
 250                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} || gen_die "Error: could not copy ${bootRes} bootsplash!"
 251                                 else
 252                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 253                                 fi
 254                         done
 255                 else
 256                         print_warning 1 "      >> No bootsplash detected; skipping!"
 257                 fi
 258         fi
 259         if ! isTrue "${CMD_NOINSTALL}"
 260         then
 261                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} || gen_die 'Could not copy the initrd to /boot!'
 262         fi
 263 }