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    • /[magellan-source]/trunk/mkinitrd-magellan/livecd/linuxrc.sh

    Diff of /trunk/mkinitrd-magellan/livecd/linuxrc.sh

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    revision 673 by niro, Fri Jan 25 11:12:52 2008 UTC revision 1809 by niro, Mon Apr 23 13:07:35 2012 UTC
    # Line 1  Line 1 
    1  #!/bin/sh  #!/bin/sh
    2  # $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd-magellan/livecd/linuxrc.sh,v 1.5 2008-01-25 11:12:52 niro Exp $  # $Id$
    3    
    4  # loads given kernel modules  # loads given kernel modules
    5  load_kernel_modules()  load_kernel_modules()
    # Line 55  check_drives() Line 55  check_drives()
    55  ## some defaults ##  ## some defaults ##
    56  DOSCSI=no  DOSCSI=no
    57  DOUSB=no  DOUSB=no
    58  DOSATA=no  DOSATA=yes
    59  DOFB=no  DOFB=no
    60  DOPATA=no  DOPATA=yes
    61  FORCED_ROOTFS=""  FORCED_ROOTFS=""
    62    INITEXEC="/sbin/init"
    63    BREAK_ENABLED=no
    64    UNIONFS=no
    65    UNIONFS_FILE=""
    66    SYSROOT="/sysroot"
    67    CLOOPMOUNTDIR="${SYSROOT}/mnt/cloop"
    68    
    69  ## starts here ##  ## starts here ##
    70    
    71  # mount essential filesystems  # mount essential filesystems
    72  mount -t proc proc /proc  mount -t proc proc /proc
    73  mount -t sysfs sysfs /sys  mount -t sysfs sysfs /sys
    74    if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts | cut -d ' ' -f2) ]]
    75    then
    76     # many video drivers needed exec access
    77     fstype=ramfs
    78     # tmpfs was suggested by Greg Kroah-Hartman
    79     [[ $(grep '[[:space:]]tmpfs' /proc/filesystems | cut -d $'\t' -f2) = tmpfs ]] && fstype=tmpfs
    80     # mount devtmpfs if supported
    81     [[ $(grep '[[:space:]]devtmpfs' /proc/filesystems | cut -d $'\t' -f2) = devtmpfs ]] && fstype=devtmpfs
    82     mount -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M
    83    fi
    84    
    85    # install all busybox applets
    86    busybox --install -s
    87    
    88  # silencio  # silencio
    89  echo 0 > /proc/sys/kernel/printk  echo 0 > /proc/sys/kernel/printk
    # Line 73  echo 0 > /proc/sys/kernel/printk Line 92  echo 0 > /proc/sys/kernel/printk
    92  for i in $(cat /proc/cmdline)  for i in $(cat /proc/cmdline)
    93  do  do
    94   case "${i}" in   case "${i}" in
    95   doscsi)   doscsi) DOSCSI=yes;;
    96   DOSCSI=yes   noscsi) DOSCSI=no;;
    97   ;;   dousb) DOUSB=yes;;
    98   dousb)   nousb) DOUSB=no;;
    99   DOUSB=yes   dosata) DOSATA=yes ;;
    100   ;;   nosata) DOSATA=no ;;
    101   dosata)   dofb) DOFB=yes;;
    102   DOSATA=yes   nofb) DOFB=no;;
    103   ;;   dopata) DOPATA=yes;;
    104   dofb)   nopata) DOPATA=no;;
    105   DOFB=yes   rootfs=*) FORCED_ROOTFS="${i#*=}";;
    106   ;;   init=*) INITEXEC="${i#*=}";;
    107   dopata)   break) BREAK_ENABLED=yes ;;
    108   DOPATA=yes   unionfs) UNIONFS=yes;;
    109   ;;   unionfs_file=*) UNIONFS_FILE="${i#*=}";;
    110   rootfs=*)   rootdelay=*) ROOTDELAY="${i#*=}";;
      FORCED_ROOTFS="${i#*=}"  
      ;;  
    111   esac   esac
    112  done  done
    113    
    # Line 102  load_kernel_modules "generic" Line 119  load_kernel_modules "generic"
    119  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"
    120  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"
    121    
    122    # populate dev
    123    mdev -s
    124    # handle hotplug events properly
    125    echo /sbin/mdev > /proc/sys/kernel/hotplug
    126    
    127  # create newroot mount point  # create newroot mount point
    128  mkdir -p /sysroot  mkdir -p ${SYSROOT}
    129  # fake a new filesystem (also needed with an initramfs!!)  # fake a new filesystem (also needed with an initramfs!!)
    130  mount -t tmpfs tmpfs /sysroot  mount -t tmpfs tmpfs ${SYSROOT}
    131    
    132  mkdir -p /sysroot/mnt/cdrom  mkdir -p ${SYSROOT}/mnt/cdrom
    133  mkdir -p /sysroot/mnt/cloop  mkdir -p ${SYSROOT}/mnt/cloop
    134  mkdir -p /sysroot/mnt/magellan  mkdir -p ${SYSROOT}/mnt/magellan
    135    
    136    
    137  # needed for the usbstick, the timeout maybe to short  # needed for the usbstick, the timeout maybe to short
    # Line 118  if [ "${DOUSB}" = "yes" ]; then Line 140  if [ "${DOUSB}" = "yes" ]; then
    140   sleep 8   sleep 8
    141  fi  fi
    142    
    143    # respect rootdelay kernel param
    144    if [ ! -z "${ROOTDELAY}" ]; then
    145     echo "-- Requested a rootdelay of ${ROOTDELAY} seconds ..."
    146     sleep ${ROOTDELAY}
    147    fi
    148    
    149  # searching cdrom with cdid  # searching cdrom with cdid
    150  BOOT_DEVICE=""  BOOT_DEVICE=""
    151  FSTYPE=""  FSTYPE=""
    # Line 127  echo "Searching for a boot device ..." Line 155  echo "Searching for a boot device ..."
    155  # searching usbstick  # searching usbstick
    156  if [ "${DOUSB}" = "yes" ]; then  if [ "${DOUSB}" = "yes" ]; then
    157   ROOTFS="vfat"   ROOTFS="vfat"
    158   [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"   [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    159   check_drives "/dev/sd*" "${ROOTFS}"   check_drives "/dev/sd*" "${ROOTFS}"
    160   check_drives "/dev/sg*" "${ROOTFS}"   check_drives "/dev/sg*" "${ROOTFS}"
    161  fi  fi
    162    
    163  # for cdrom_device in $CDROM_LIST (ide)  # for cdrom_device in $CDROM_LIST (ide)
    164  ROOTFS="iso9660"  ROOTFS="iso9660"
    165  [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"  [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    166  check_drives "/dev/cdroms/*" "${ROOTFS}"  check_drives "/dev/cdroms/*" "${ROOTFS}"
    167  check_drives "/dev/hd*" "${ROOTFS}"  check_drives "/dev/hd*" "${ROOTFS}"
    168    
    169  # scsi cdroms  # scsi cdroms
    170  if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then  if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then
    171   ROOTFS="iso9660"   ROOTFS="iso9660"
    172   [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"   [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    173   check_drives "/dev/sr*" "${ROOTFS}"   check_drives "/dev/sr*" "${ROOTFS}"
    174   check_drives "/dev/sg*" "${ROOTFS}"   check_drives "/dev/sg*" "${ROOTFS}"
    175   check_drives "/dev/scd*" "${ROOTFS}"   check_drives "/dev/scd*" "${ROOTFS}"
    # Line 155  then Line 183  then
    183   exit 1   exit 1
    184  else  else
    185   echo -e "Booting from: $BOOT_DEVICE ..."   echo -e "Booting from: $BOOT_DEVICE ..."
    186   mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1   mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" ${SYSROOT}/mnt/cdrom >/dev/null 2>&1
    187    
    188   # write our boot_device to /mnt/.bootdev for later use (mtab)   # write our boot_device to /mnt/.bootdev for later use (mtab)
    189   echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev   echo "BOOTDEV=${BOOT_DEVICE}" > ${SYSROOT}/.bootdev
    190   echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev   echo "FSTYPE=${FSTYPE}" >> ${SYSROOT}/.bootdev
    191    
    192   # mount squashfs   # mount squashfs
    193   echo -e "Mounting squashfs system image ..."   echo -e "Mounting squashfs system image ..."
    194   echo   echo
    195   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0
    196   mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop   mount -o loop,ro -t squashfs ${SYSROOT}/mnt/cdrom/livecdrootfs.sqsh "${CLOOPMOUNTDIR}"
    197    
    198     # mount unionfs if enabled
    199     if [[ ${UNIONFS} = yes ]]
    200     then
    201     echo -e "Mounting writeable cdbuffer (unionfs) ..."
    202    
    203     # default setting
    204     CLOOPMOUNTDIR="${SYSROOT}/mnt/unionfs"
    205     [[ -z ${UNIONFS_FILE} ]] && UNIONFS_FILE="${SYSROOT}/mnt/cdrom/unionfs"
    206    
    207     [[ ! -d ${SYSROOT}/mnt/unionfs ]] && install -d ${SYSROOT}/mnt/unionfs
    208     mount -t unionfs dirs=${UNIONFS_FILE}=rw:${SYSROOT}/mnt/cloop=ro ${CLOOPMOUNTDIR}
    209     fi
    210    
    211   # symlinking cloop rootfs to /mnt as newroot   # symlinking cloop rootfs to /mnt as newroot
    212   cd /sysroot   cd ${SYSROOT}
    213    
    214   for x in bin sbin lib lib64 boot usr opt   for x in bin sbin lib lib64 boot usr opt
    215   do   do
    216   [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x}   [ -d ${CLOOPMOUNTDIR}/${x} ] && ln -s ${CLOOPMOUNTDIR#${SYSROOT}}/${x} ${x}
    217   done   done
    218   mkdir -p initrd proc tmp sys var/tmp dev media   mkdir -p initrd proc tmp sys var/tmp dev media
    219    
    220   # make /sysroot/dev/console & /mnt/dev/null   # make ${SYSROOT}/dev/console & /mnt/dev/null
    221   [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1   [ ! -e ${SYSROOT}/dev/console ] && mknod -m 600 ${SYSROOT}/dev/console c 5 1
    222   [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3   [ ! -e ${SYSROOT}/dev/null ] && mknod -m 666 ${SYSROOT}/dev/null c 1 3
    223     # only to be safe and to have a log channel
    224     [ ! -e ${SYSROOT}/dev/tty ] && mknod ${SYSROOT}/dev/tty c 5 0
    225     # busybox needs this one
    226     [ ! -e ${SYSROOT}/dev/tty5 ] && mknod ${SYSROOT}/dev/tty5 c 4 5
    227    
    228     (cd ${CLOOPMOUNTDIR}; cp -a etc root home var ${SYSROOT})
    229    
    230   (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot)   # ensure that ${SYSROOT}/linurc exists
    231     [ ! -e ${SYSROOT}/linuxrc ] && ln -snf ${INITEXEC} ${SYSROOT}/linuxrc
    232    
    233   # ensure the right permissions   # ensure the right permissions
    234   chmod 1777 /sysroot/tmp   chmod 1777 ${SYSROOT}/tmp
    235   chmod 1777 /sysroot/var/tmp   chmod 1777 ${SYSROOT}/var/tmp
    236  fi  fi
    237    
    238  cd /  cd /
    239    
    240    # unset hotplug event-manager
    241    echo > /proc/sys/kernel/hotplug
    242    
    243  # de-silencio  # de-silencio
    244  echo 3 > /proc/sys/kernel/printk  echo 3 > /proc/sys/kernel/printk
    245    
    246    if [[ ${BREAK_ENABLED} = yes ]]
    247    then
    248     echo "-- Break requested, type 'exit' to resume operation ..."
    249     ash
    250    fi
    251    
    252  echo "-- Switching to real sysroot ..."  echo "-- Switching to real sysroot ..."
    253  umount /sys  mount --move /dev ${SYSROOT}/dev
    254  umount /proc  mount --move /sys ${SYSROOT}/sys
    255    mount --move /proc ${SYSROOT}/proc
    256    
    257  exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console  exec run-init ${SYSROOT} ${INITEXEC} $@ < ${SYSROOT}/dev/console > ${SYSROOT}/dev/console
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