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 "${TEMP}/initrd-temp/etc/devfsd.conf.bz2" ||
  91 #               gen_die "could not uncompress devfsd.conf"
  92
  93         # LVM2
  94         if [ -e '/sbin/lvm' ] && ldd /sbin/lvm|grep -q 'not a dynamic executable';
  95         then
  96                 if [ "${CMD_NOLVM2}" != '1' ]
  97                 then
  98                         cp /sbin/lvm "${TEMP}/initrd-temp/bin/lvm" ||
  99                                 gen_die 'Could not copy over lvm!'
 100                         ln -sf "${TEMP}/initrd-temp/bin/lvm" "${TEMP}/initrd-temp/bin/vgscan" ||
 101                                 gen_die 'Could not symlink lvm -> vgscan!'
 102                         ln -sf "${TEMP}/initrd-temp/bin/lvm" "${TEMP}/initrd-temp/bin/vgchange" ||
 103                                 gen_die 'Could not symlink lvm -> vgchange!'
 104                 fi
 105 #       else
 106 #               print_warning 1 "initrd: No LVM2 static binaries found; skipping support..."
 107         fi
 108
 109         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 110         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 111         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 112         xargs yes zcat chmod chown cut kill killall; do
 113                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 114                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 115                         gen_die "Busybox error: could not link ${i}!"
 116         done
 117 }
 118
 119 print_list()
 120 {
 121         local x
 122         for x in ${*}
 123         do
 124                 echo ${x}
 125         done
 126 }
 127
 128 create_initrd_modules() {
 129         local group
 130         local group_modules
 131
 132         if [ "${PAT}" -gt "4" ]
 133         then
 134                 MOD_EXT=".ko"
 135         else
 136                 MOD_EXT=".o"
 137         fi
 138
 139         print_info 2 "initrd: >> Searching for modules..."
 140         if [ "${INSTALL_MOD_PATH}" != '' ]
 141         then
 142           cd ${INSTALL_MOD_PATH}
 143         else
 144           cd /
 145         fi
 146         for i in `gen_dep_list`
 147         do
 148                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 149                 if [ -z "${mymod}" ]
 150                 then
 151                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 152                         continue;
 153                 fi
 154                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 155                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 156         done
 157
 158         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 159
 160         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 161         for group_modules in ${!MODULES_*}; do
 162                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 163                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 164         done
 165 }
 166
 167 create_initrd_aux() {
 168         if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 169         then
 170                 cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 171         else
 172                 cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 173         fi
 174
 175         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 176         then
 177                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 178         else
 179                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 180         fi
 181
 182         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 183         then
 184                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 185         else
 186                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 187         fi
 188
 189         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 190         for group_modules in ${!MODULES_*}; do
 191                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 192                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 193         done
 194         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 195
 196         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 197         then
 198                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 199         else
 200                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 201         fi
 202         if isTrue $CMD_DOKEYMAPAUTO
 203         then
 204                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 205         fi
 206         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 207         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 208
 209         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 210         cd ${OLDPWD}
 211         chmod +x "${TEMP}/initrd-temp/linuxrc"
 212         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 213         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 214         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 215 }
 216
 217 calc_initrd_size() {
 218         local TEST
 219         cd ${TEMP}/initrd-temp/
 220         TEST=`du -sk 2> /dev/null`
 221         echo $TEST | cut "-d " -f1
 222 }
 223
 224 create_initrd() {
 225         local MOD_EXT
 226
 227         print_info 1 "initrd: >> Initializing..."
 228         create_base_initrd_sys
 229
 230         if [ "${NOINITRDMODULES}" = '' ]
 231         then
 232                 print_info 1 "        >> Copying modules..."
 233                 create_initrd_modules
 234         else
 235                 print_info 1 "initrd: Not copying modules..."
 236         fi
 237
 238         print_info 1 "        >> Copying auxilary files..."
 239         create_initrd_aux
 240
 241         INITRD_CALC_SIZE=`calc_initrd_size`
 242         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 243         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 244
 245         print_info 1 "        >> Creating loopback filesystem..."
 246         create_initrd_loop ${INITRD_SIZE}
 247
 248         print_info 1 "        >> Moving initrd files to the loopback..."
 249         move_initrd_to_loop
 250
 251         print_info 1 "        >> Cleaning up and compressing the initrd..."
 252         create_initrd_unmount_loop
 253
 254         if [ "${COMPRESS_INITRD}" ]
 255         then
 256                 gzip -f -9 ${TEMP}/initrd-${KV}
 257                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 258         fi
 259
 260         if [ "${BOOTSPLASH}" -eq "1" ]
 261         then
 262                 if [ -x /sbin/splash ]
 263                 then
 264                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 265                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 266                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 267                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 268                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 269                         do
 270                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 271                                 then
 272                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} ||
 273                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 274                                 else
 275                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 276                                 fi
 277                         done
 278                 else
 279                         print_warning 1 '        >> No bootsplash detected; skipping!'
 280                 fi
 281         fi
 282         if ! isTrue "${CMD_NOINSTALL}"
 283         then
 284                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} ||
 285                         gen_die 'Could not copy the initrd to /boot!'
 286         fi
 287 }