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         for i in `gen_dep_list`
 119         do
 120                 mymod=`find /lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 121                 if [ -z "${mymod}" ]
 122                 then
 123                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 124                         continue;
 125                 fi
 126                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 127                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 128         done
 129
 130         cp -ax --parents /lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 131
 132         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 133         for group_modules in ${!MODULES_*}; do
 134                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 135                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 136         done
 137 }
 138
 139 create_initrd_aux() {
 140         if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 141         then
 142                 cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 143         else
 144                 cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 145         fi
 146
 147         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 148         then
 149                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 150         else
 151                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 152         fi
 153
 154         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 155         then
 156                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 157         else
 158                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 159         fi
 160
 161         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 162         for group_modules in ${!MODULES_*}; do
 163                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 164                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 165         done
 166         echo "\"" >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 167
 168         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 169         then
 170                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 171         else
 172                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 173         fi
 174         if isTrue $CMD_DOKEYMAPAUTO
 175         then
 176                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 177         fi
 178         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 179         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 180
 181         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 182         cd ${OLDPWD}
 183         chmod +x "${TEMP}/initrd-temp/linuxrc"
 184         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 185         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 186         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 187 }
 188
 189 calc_initrd_size() {
 190         local TEST
 191         cd ${TEMP}/initrd-temp/
 192         TEST=`du -sk 2> /dev/null`
 193         echo $TEST | cut "-d " -f1
 194 }
 195
 196 create_initrd() {
 197         local MOD_EXT
 198
 199         print_info 1 "initrd: >> Initializing..."
 200         create_base_initrd_sys
 201
 202         if [ "${NOINITRDMODULES}" = '' ]
 203         then
 204                 print_info 1 "        >> Copying modules..."
 205                 create_initrd_modules
 206         else
 207                 print_info 1 "initrd: Not copying modules..."
 208         fi
 209
 210         print_info 1 "        >> Copying auxilary files..."
 211         create_initrd_aux
 212
 213         INITRD_CALC_SIZE=`calc_initrd_size`
 214         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 215         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 216
 217         print_info 1 "        >> Creating loopback filesystem..."
 218         create_initrd_loop ${INITRD_SIZE}
 219
 220         print_info 1 "        >> Moving initrd files to the loopback..."
 221         move_initrd_to_loop
 222
 223         print_info 1 "        >> Cleaning up and compressing the initrd..."
 224         create_initrd_unmount_loop
 225
 226         if [ "${COMPRESS_INITRD}" ]
 227         then
 228                 gzip -f -9 ${TEMP}/initrd-${KV}
 229                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 230         fi
 231
 232         if [ "${BOOTSPLASH}" -eq "1" ]
 233         then
 234                 if [ -x /sbin/splash ]
 235                 then
 236                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 237                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 238                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 239                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 240                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 241                         do
 242                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 243                                 then
 244                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} || gen_die "Error: could not copy ${bootRes} bootsplash!"
 245                                 else
 246                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 247                                 fi
 248                         done
 249                 else
 250                         print_warning 1 "      >> No bootsplash detected; skipping!"
 251                 fi
 252         fi
 253         if ! isTrue "${CMD_NOINSTALL}"
 254         then
 255                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} || gen_die 'Could not copy the initrd to /boot!'
 256         fi
 257 }