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 ${i}!"
 118                         done
 119                 fi
 120         else # Deprecation warning; remove in a few versions.
 121                 if [ -e '/sbin/lvm' ]
 122                 then
 123                         if ldd /sbin/lvm|grep -q 'not a dynamic executable';
 124                         then
 125                                 print_warning 1 'LVM2: For support, use --lvm2!'
 126                         fi
 127                 fi
 128         fi
 129
 130         # EVMS2
 131         if [ -e '/sbin/evms_activate' ]
 132         then
 133                 if [ "${CMD_NOEVMS2}" != '1' ]
 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                 fi
 148         fi
 149
 150         for i in '[' ash basename cat chroot clear cp dirname echo env false find \
 151         grep gunzip gzip ln ls loadkmap losetup lsmod mkdir mknod more mount mv \
 152         pivot_root ps awk pwd rm rmdir rmmod sed sh sleep tar test touch true umount uname \
 153         xargs yes zcat chmod chown cut kill killall; do
 154                 rm -f ${TEMP}/initrd-temp/bin/$i > /dev/null
 155                 ln  ${TEMP}/initrd-temp/bin/busybox ${TEMP}/initrd-temp/bin/$i ||
 156                         gen_die "Busybox error: could not link ${i}!"
 157         done
 158 }
 159
 160 print_list()
 161 {
 162         local x
 163         for x in ${*}
 164         do
 165                 echo ${x}
 166         done
 167 }
 168
 169 create_initrd_modules() {
 170         local group
 171         local group_modules
 172
 173         if [ "${PAT}" -gt "4" ]
 174         then
 175                 MOD_EXT=".ko"
 176         else
 177                 MOD_EXT=".o"
 178         fi
 179
 180         print_info 2 "initrd: >> Searching for modules..."
 181         if [ "${INSTALL_MOD_PATH}" != '' ]
 182         then
 183           cd ${INSTALL_MOD_PATH}
 184         else
 185           cd /
 186         fi
 187         for i in `gen_dep_list`
 188         do
 189                 mymod=`find ./lib/modules/${KV} -name "${i}${MOD_EXT}" | head -n 1`
 190                 if [ -z "${mymod}" ]
 191                 then
 192                         print_warning 2 "Warning :: ${i}${MOD_EXT} not found; skipping..."
 193                         continue;
 194                 fi
 195                 print_info 2 "initrd: >> Copying ${i}${MOD_EXT}..."
 196                 cp -ax --parents "${mymod}" "${TEMP}/initrd-temp"
 197         done
 198
 199         cp -ax --parents ./lib/modules/${KV}/modules* ${TEMP}/initrd-temp
 200
 201         mkdir -p "${TEMP}/initrd-temp/etc/modules"
 202         for group_modules in ${!MODULES_*}; do
 203                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 204                 print_list ${!group_modules} > "${TEMP}/initrd-temp/etc/modules/${group}"
 205         done
 206 }
 207
 208 create_initrd_aux() {
 209         if [ -f "${CMD_LINUXRC}" ]
 210         then
 211                 cp "${CMD_LINUXRC}" "${TEMP}/initrd-temp/linuxrc"
 212                 print_info 2 "        >> Copying user specified linuxrc: ${CMD_LINUXRC}"
 213         else
 214                 if [ -f "${GK_SHARE}/${ARCH}/linuxrc" ]
 215                 then
 216                         cp "${GK_SHARE}/${ARCH}/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 217                 else
 218                         cp "${GK_SHARE}/generic/linuxrc" "${TEMP}/initrd-temp/linuxrc"
 219                 fi
 220         fi
 221
 222         if [ -f "${GK_SHARE}/${ARCH}/initrd.scripts" ]
 223         then
 224                 cp "${GK_SHARE}/${ARCH}/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 225         else
 226                 cp "${GK_SHARE}/generic/initrd.scripts" "${TEMP}/initrd-temp/etc/initrd.scripts"
 227         fi
 228
 229         if [ -f "${GK_SHARE}/${ARCH}/initrd.defaults" ]
 230         then
 231                 cp "${GK_SHARE}/${ARCH}/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 232         else
 233                 cp "${GK_SHARE}/generic/initrd.defaults" "${TEMP}/initrd-temp/etc/initrd.defaults"
 234         fi
 235
 236         echo -n 'HWOPTS="$HWOPTS ' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 237         for group_modules in ${!MODULES_*}; do
 238                 group="$(echo $group_modules | cut -d_ -f2 | tr "[:upper:]" "[:lower:]")"
 239                 echo -n "${group} " >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 240         done
 241         echo '"' >> "${TEMP}/initrd-temp/etc/initrd.defaults"
 242
 243         if [ -f "${GK_SHARE}/${ARCH}/modprobe" ]
 244         then
 245                 cp "${GK_SHARE}/${ARCH}/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 246         else
 247                 cp "${GK_SHARE}/generic/modprobe" "${TEMP}/initrd-temp/sbin/modprobe"
 248         fi
 249         if isTrue $CMD_DOKEYMAPAUTO
 250         then
 251                 echo 'MY_HWOPTS="${MY_HWOPTS} keymap"' >> ${TEMP}/initrd-temp/etc/initrd.defaults
 252         fi
 253         mkdir -p "${TEMP}/initrd-temp/lib/keymaps"
 254         tar -C "${TEMP}/initrd-temp/lib/keymaps" -zxf "${GK_SHARE}/generic/keymaps.tar.gz"
 255
 256         cd ${TEMP}/initrd-temp/sbin && ln -s ../linuxrc init
 257         cd ${OLDPWD}
 258         chmod +x "${TEMP}/initrd-temp/linuxrc"
 259         chmod +x "${TEMP}/initrd-temp/etc/initrd.scripts"
 260         chmod +x "${TEMP}/initrd-temp/etc/initrd.defaults"
 261         chmod +x "${TEMP}/initrd-temp/sbin/modprobe"
 262 }
 263
 264 calc_initrd_size() {
 265         local TEST
 266         cd ${TEMP}/initrd-temp/
 267         TEST=`du -sk 2> /dev/null`
 268         echo $TEST | cut "-d " -f1
 269 }
 270
 271 create_initrd() {
 272         local MOD_EXT
 273
 274         print_info 1 "initrd: >> Initializing..."
 275         create_base_initrd_sys
 276
 277         if [ "${NOINITRDMODULES}" = '' ]
 278         then
 279                 print_info 1 "        >> Copying modules..."
 280                 create_initrd_modules
 281         else
 282                 print_info 1 "initrd: Not copying modules..."
 283         fi
 284
 285         print_info 1 "        >> Copying auxilary files..."
 286         create_initrd_aux
 287
 288         INITRD_CALC_SIZE=`calc_initrd_size`
 289         INITRD_SIZE=`expr ${INITRD_CALC_SIZE} + 100`
 290         print_info 1 "        :: Size is at ${INITRD_SIZE}K"
 291
 292         print_info 1 "        >> Creating loopback filesystem..."
 293         create_initrd_loop ${INITRD_SIZE}
 294
 295         print_info 1 "        >> Moving initrd files to the loopback..."
 296         move_initrd_to_loop
 297
 298         print_info 1 "        >> Cleaning up and compressing the initrd..."
 299         create_initrd_unmount_loop
 300
 301         if [ "${COMPRESS_INITRD}" ]
 302         then
 303                 gzip -f -9 ${TEMP}/initrd-${KV}
 304                 mv ${TEMP}/initrd-${KV}.gz ${TEMP}/initrd-${KV}
 305         fi
 306
 307         if [ "${BOOTSPLASH}" -eq "1" ]
 308         then
 309                 if [ -x /sbin/splash ]
 310                 then
 311                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash.conf ] && source /etc/conf.d/bootsplash.conf
 312                         [ -z "${BOOTSPLASH_THEME}" ] && [ -e /etc/conf.d/bootsplash ] && source /etc/conf.d/bootsplash
 313                         [ -z "${BOOTSPLASH_THEME}" ] && BOOTSPLASH_THEME=default
 314                         print_info 1 "        >> Installing bootsplash [ using the ${BOOTSPLASH_THEME} theme ]..."
 315                         for bootRes in '800x600' '1024x768' '1280x1024' '1600x1200'
 316                         do
 317                                 if [ -f "/etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg" ]
 318                                 then
 319                                         /sbin/splash -s -f /etc/bootsplash/${BOOTSPLASH_THEME}/config/bootsplash-${bootRes}.cfg >> ${TEMP}/initrd-${KV} ||
 320                                                 gen_die "Error: could not copy ${bootRes} bootsplash!"
 321                                 else
 322                                         print_warning 1 "splash: Did not find a bootsplash for the ${bootRes} resolution..."
 323                                 fi
 324                         done
 325                 else
 326                         print_warning 1 '        >> No bootsplash detected; skipping!'
 327                 fi
 328         fi
 329         if ! isTrue "${CMD_NOINSTALL}"
 330         then
 331                 cp ${TEMP}/initrd-${KV} /boot/initrd-${KV} ||
 332                         gen_die 'Could not copy the initrd to /boot!'
 333         fi
 334 }