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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 1793 by niro, Mon Apr 2 11:40:49 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    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    if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts | cut -d ' ' -f2) ]]
    74    then
    75     # many video drivers needed exec access
    76     fstype=ramfs
    77     # tmpfs was suggested by Greg Kroah-Hartman
    78     [[ $(grep '[[:space:]]tmpfs' /proc/filesystems | cut -d $'\t' -f2) = tmpfs ]] && fstype=tmpfs
    79     # mount devtmpfs if supported
    80     [[ $(grep '[[:space:]]devtmpfs' /proc/filesystems | cut -d $'\t' -f2) = devtmpfs ]] && fstype=devtmpfs
    81     mount -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M
    82    fi
    83    
    84    # install all busybox applets
    85    busybox --install -s
    86    
    87  # silencio  # silencio
    88  echo 0 > /proc/sys/kernel/printk  echo 0 > /proc/sys/kernel/printk
    # Line 73  echo 0 > /proc/sys/kernel/printk Line 91  echo 0 > /proc/sys/kernel/printk
    91  for i in $(cat /proc/cmdline)  for i in $(cat /proc/cmdline)
    92  do  do
    93   case "${i}" in   case "${i}" in
    94   doscsi)   doscsi) DOSCSI=yes;;
    95   DOSCSI=yes   noscsi) DOSCSI=no;;
    96   ;;   dousb) DOUSB=yes;;
    97   dousb)   nousb) DOUSB=no;;
    98   DOUSB=yes   dosata) DOSATA=yes ;;
    99   ;;   nosata) DOSATA=no ;;
    100   dosata)   dofb) DOFB=yes;;
    101   DOSATA=yes   nofb) DOFB=no;;
    102   ;;   dopata) DOPATA=yes;;
    103   dofb)   nopata) DOPATA=no;;
    104   DOFB=yes   rootfs=*) FORCED_ROOTFS="${i#*=}";;
    105   ;;   init=*) INITEXEC="${i#*=}";;
    106   dopata)   break) BREAK_ENABLED=yes ;;
    107   DOPATA=yes   unionfs) UNIONFS=yes;;
    108   ;;   unionfs_file=*) UNIONFS_FILE="${i#*=}";;
    109   rootfs=*)   rootdelay=*) ROOTDELAY="${i#*=}";;
      FORCED_ROOTFS="${i#*=}"  
      ;;  
    110   esac   esac
    111  done  done
    112    
    # Line 102  load_kernel_modules "generic" Line 118  load_kernel_modules "generic"
    118  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"  [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"
    119  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"  [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"
    120    
    121    # populate dev
    122    mdev -s
    123    # handle hotplug events properly
    124    echo /sbin/mdev > /proc/sys/kernel/hotplug
    125    
    126  # create newroot mount point  # create newroot mount point
    127  mkdir -p /sysroot  mkdir -p /sysroot
    128  # fake a new filesystem (also needed with an initramfs!!)  # fake a new filesystem (also needed with an initramfs!!)
    # Line 118  if [ "${DOUSB}" = "yes" ]; then Line 139  if [ "${DOUSB}" = "yes" ]; then
    139   sleep 8   sleep 8
    140  fi  fi
    141    
    142    # respect rootdelay kernel param
    143    if [ ! -z "${ROOTDELAY}" ]; then
    144     echo "-- Requested a rootdelay of ${ROOTDELAY} seconds ..."
    145     sleep ${ROOTDELAY}
    146    fi
    147    
    148  # searching cdrom with cdid  # searching cdrom with cdid
    149  BOOT_DEVICE=""  BOOT_DEVICE=""
    150  FSTYPE=""  FSTYPE=""
    # Line 127  echo "Searching for a boot device ..." Line 154  echo "Searching for a boot device ..."
    154  # searching usbstick  # searching usbstick
    155  if [ "${DOUSB}" = "yes" ]; then  if [ "${DOUSB}" = "yes" ]; then
    156   ROOTFS="vfat"   ROOTFS="vfat"
    157   [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"   [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    158   check_drives "/dev/sd*" "${ROOTFS}"   check_drives "/dev/sd*" "${ROOTFS}"
    159   check_drives "/dev/sg*" "${ROOTFS}"   check_drives "/dev/sg*" "${ROOTFS}"
    160  fi  fi
    161    
    162  # for cdrom_device in $CDROM_LIST (ide)  # for cdrom_device in $CDROM_LIST (ide)
    163  ROOTFS="iso9660"  ROOTFS="iso9660"
    164  [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"  [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    165  check_drives "/dev/cdroms/*" "${ROOTFS}"  check_drives "/dev/cdroms/*" "${ROOTFS}"
    166  check_drives "/dev/hd*" "${ROOTFS}"  check_drives "/dev/hd*" "${ROOTFS}"
    167    
    168  # scsi cdroms  # scsi cdroms
    169  if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then  if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then
    170   ROOTFS="iso9660"   ROOTFS="iso9660"
    171   [[ -n ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"   [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    172   check_drives "/dev/sr*" "${ROOTFS}"   check_drives "/dev/sr*" "${ROOTFS}"
    173   check_drives "/dev/sg*" "${ROOTFS}"   check_drives "/dev/sg*" "${ROOTFS}"
    174   check_drives "/dev/scd*" "${ROOTFS}"   check_drives "/dev/scd*" "${ROOTFS}"
    # Line 165  else Line 192  else
    192   echo -e "Mounting squashfs system image ..."   echo -e "Mounting squashfs system image ..."
    193   echo   echo
    194   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0   [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0
    195   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}"
    196    
    197     # mount unionfs if enabled
    198     if [[ ${UNIONFS} = yes ]]
    199     then
    200     echo -e "Mounting writeable cdbuffer (unionfs) ..."
    201    
    202     # default setting
    203     CLOOPMOUNTDIR="/sysroot/mnt/unionfs"
    204     [[ -z ${UNIONFS_FILE} ]] && UNIONFS_FILE="/sysroot/mnt/cdrom/unionfs"
    205    
    206     [[ ! -d /sysroot/mnt/unionfs ]] && install -d /sysroot/mnt/unionfs
    207     mount -t unionfs dirs=${UNIONFS_FILE}=rw:/sysroot/mnt/cloop=ro ${CLOOPMOUNTDIR}
    208     fi
    209    
    210   # symlinking cloop rootfs to /mnt as newroot   # symlinking cloop rootfs to /mnt as newroot
    211   cd /sysroot   cd /sysroot
    212    
    213   for x in bin sbin lib lib64 boot usr opt   for x in bin sbin lib lib64 boot usr opt
    214   do   do
    215   [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x}   [ -d ${CLOOPMOUNTDIR/\/sysroot\//}/${x} ] && ln -s ${CLOOPMOUNTDIR/\/sysroot\//}/${x} ${x}
    216   done   done
    217   mkdir -p initrd proc tmp sys var/tmp dev media   mkdir -p initrd proc tmp sys var/tmp dev media
    218    
    219   # make /sysroot/dev/console & /mnt/dev/null   # use devtmpfs if supported
    220   [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1   if [ "$(grep devtmpfs /proc/filesystems | cut -d$'\t' -f2)" = "devtmpfs" ]
    221   [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3   then
    222     mount -t devtmpfs dev /sysroot/dev
    223     else
    224     # make /sysroot/dev/console & /mnt/dev/null
    225     [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1
    226     [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3
    227     # only to be safe and to have a log channel
    228     [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0
    229     # busybox needs this one
    230     [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5
    231     fi
    232    
    233     (cd ${CLOOPMOUNTDIR}; cp -a etc root home var /sysroot)
    234    
    235   (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot)   # ensure that /sysroot/linurc exists
    236     [ ! -e /sysroot/linuxrc ] && ln -snf ${INITEXEC} /sysroot/linuxrc
    237    
    238   # ensure the right permissions   # ensure the right permissions
    239   chmod 1777 /sysroot/tmp   chmod 1777 /sysroot/tmp
    # Line 189  fi Line 242  fi
    242    
    243  cd /  cd /
    244    
    245    # unset hotplug event-manager
    246    echo > /proc/sys/kernel/hotplug
    247    
    248  # de-silencio  # de-silencio
    249  echo 3 > /proc/sys/kernel/printk  echo 3 > /proc/sys/kernel/printk
    250    
    251    if [[ ${BREAK_ENABLED} = yes ]]
    252    then
    253     echo "-- Break requested, type 'exit' to resume operation ..."
    254     ash
    255    fi
    256    
    257  echo "-- Switching to real sysroot ..."  echo "-- Switching to real sysroot ..."
    258  umount /sys  mount --move /dev /sysroot/dev
    259  umount /proc  mount --move /sys /sysroot/sys
    260    mount --move /proc /sysroot/proc
    261    
    262  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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