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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 757 by niro, Thu Jun 26 23:04:52 2008 UTC revision 1514 by niro, Wed Sep 7 17:45:14 2011 UTC
    # Line 1  Line 1 
    1  #!/bin/sh  #!/bin/sh
    2  # $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd-magellan/livecd/linuxrc.sh,v 1.9 2008-06-26 23:04:52 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    CLOOPMOUNTDIR="/sysroot/mnt/cloop"
    67    
    68  ## starts here ##  ## starts here ##
    69    
    70  # mount essential filesystems  # mount essential filesystems
    71  mount -t proc proc /proc  mount -t proc proc /proc
    72  mount -t sysfs sysfs /sys  mount -t sysfs sysfs /sys
    73    mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024
    74    
    75    # install all busybox applets
    76    busybox --install -s
    77    
    78  # silencio  # silencio
    79  echo 0 > /proc/sys/kernel/printk  echo 0 > /proc/sys/kernel/printk
    # Line 73  echo 0 > /proc/sys/kernel/printk Line 82  echo 0 > /proc/sys/kernel/printk
    82  for i in $(cat /proc/cmdline)  for i in $(cat /proc/cmdline)
    83  do  do
    84   case "${i}" in   case "${i}" in
    85   doscsi)   doscsi) DOSCSI=yes;;
    86   DOSCSI=yes   noscsi) DOSCSI=no;;
    87   ;;   dousb) DOUSB=yes;;
    88   dousb)   nousb) DOUSB=no;;
    89   DOUSB=yes   dosata) DOSATA=yes ;;
    90   ;;   nosata) DOSATA=no ;;
    91   dosata)   dofb) DOFB=yes;;
    92   DOSATA=yes   nofb) DOFB=no;;
    93   ;;   dopata) DOPATA=yes;;
    94   dofb)   nopata) DOPATA=no;;
    95   DOFB=yes   rootfs=*) FORCED_ROOTFS="${i#*=}";;
    96   ;;   init=*) INITEXEC="${i#*=}";;
    97   dopata)   break) BREAK_ENABLED=yes ;;
    98   DOPATA=yes   unionfs) UNIONFS=yes;;
    99   ;;   unionfs_file=*) UNIONFS_FILE="${i#*=}";;
    100   rootfs=*)   rootdelay=*) ROOTDELAY="${i#*=}";;
      FORCED_ROOTFS="${i#*=}"  
      ;;  
    101   esac   esac
    102  done  done
    103    
    # Line 102  load_kernel_modules "generic" Line 109  load_kernel_modules "generic"
    109  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"
    110  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"
    111    
    112    # populate dev
    113    mdev -s
    114    # handle hotplug events properly
    115    echo /sbin/mdev > /proc/sys/kernel/hotplug
    116    
    117  # create newroot mount point  # create newroot mount point
    118  mkdir -p /sysroot  mkdir -p /sysroot
    119  # fake a new filesystem (also needed with an initramfs!!)  # fake a new filesystem (also needed with an initramfs!!)
    # Line 118  if [ "${DOUSB}" = "yes" ]; then Line 130  if [ "${DOUSB}" = "yes" ]; then
    130   sleep 8   sleep 8
    131  fi  fi
    132    
    133    # respect rootdelay kernel param
    134    if [ ! -z "${ROOTDELAY}" ]; then
    135     echo "-- Requested a rootdelay of ${ROOTDELAY} seconds ..."
    136     sleep ${ROOTDELAY}
    137    fi
    138    
    139  # searching cdrom with cdid  # searching cdrom with cdid
    140  BOOT_DEVICE=""  BOOT_DEVICE=""
    141  FSTYPE=""  FSTYPE=""
    # Line 165  else Line 183  else
    183   echo -e "Mounting squashfs system image ..."   echo -e "Mounting squashfs system image ..."
    184   echo   echo
    185   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0
    186   mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop   mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh "${CLOOPMOUNTDIR}"
    187    
    188     # mount unionfs if enabled
    189     if [[ ${UNIONFS} = yes ]]
    190     then
    191     echo -e "Mounting writeable cdbuffer (unionfs) ..."
    192    
    193     # default setting
    194     CLOOPMOUNTDIR="/sysroot/mnt/unionfs"
    195     [[ -z ${UNIONFS_FILE} ]] && UNIONFS_FILE="/sysroot/mnt/cdrom/unionfs"
    196    
    197     [[ ! -d /sysroot/mnt/unionfs ]] && install -d /sysroot/mnt/unionfs
    198     mount -t unionfs dirs=${UNIONFS_FILE}=rw:/sysroot/mnt/cloop=ro ${CLOOPMOUNTDIR}
    199     fi
    200    
    201   # symlinking cloop rootfs to /mnt as newroot   # symlinking cloop rootfs to /mnt as newroot
    202   cd /sysroot   cd /sysroot
    203    
    204   for x in bin sbin lib lib64 boot usr opt   for x in bin sbin lib lib64 boot usr opt
    205   do   do
    206   [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x}   [ -d ${CLOOPMOUNTDIR/\/sysroot\//}/${x} ] && ln -s ${CLOOPMOUNTDIR/\/sysroot\//}/${x} ${x}
    207   done   done
    208   mkdir -p initrd proc tmp sys var/tmp dev media   mkdir -p initrd proc tmp sys var/tmp dev media
    209    
    210   # make /sysroot/dev/console & /mnt/dev/null   # use devtmpfs if supported
    211   [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1   if [ "$(grep devtmpfs /proc/filesystems | cut -d$'\t' -f2)" = "devtmpfs" ]
    212   [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3   then
    213   # only to be safe and to have a log channel   mount -t devtmpfs dev /sysroot/dev
    214   [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0   else
    215   # busybox needs this one   # make /sysroot/dev/console & /mnt/dev/null
    216   [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5   [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1
    217     [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3
    218     # only to be safe and to have a log channel
    219     [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0
    220     # busybox needs this one
    221     [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5
    222     fi
    223    
    224   (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot)   (cd ${CLOOPMOUNTDIR}; cp -a etc root home var /sysroot)
    225    
    226     # ensure that /sysroot/linurc exists
    227     [ ! -e /sysroot/linuxrc ] && ln -snf ${INITEXEC} /sysroot/linuxrc
    228    
    229   # ensure the right permissions   # ensure the right permissions
    230   chmod 1777 /sysroot/tmp   chmod 1777 /sysroot/tmp
    # Line 193  fi Line 233  fi
    233    
    234  cd /  cd /
    235    
    236    # unset hotplug event-manager
    237    echo > /proc/sys/kernel/hotplug
    238    
    239  # de-silencio  # de-silencio
    240  echo 3 > /proc/sys/kernel/printk  echo 3 > /proc/sys/kernel/printk
    241    
    242    if [[ ${BREAK_ENABLED} = yes ]]
    243    then
    244     echo "-- Break requested, type 'exit' to resume operation ..."
    245     ash
    246    fi
    247    
    248  echo "-- Switching to real sysroot ..."  echo "-- Switching to real sysroot ..."
    249    umount /dev
    250  umount /sys  umount /sys
    251  umount /proc  umount /proc
    252    
    253  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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