Magellan Linux

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

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

    Parent Directory Parent Directory | Revision Log Revision Log

    Revision 894 - (hide annotations) (download) (as text)
    Wed Aug 5 16:24:23 2009 UTC (14 years, 9 months ago) by niro
    File MIME type: application/x-sh
    File size: 4842 byte(s) 
    -install all busybox applets
-use mdev for /dev management
-use inmod from busybox
-fixed a small typo regarding v86d installation
-set DOSATA and DOPATA as default settings
-support all do/no commandline combinations
    1 niro 532 #!/bin/sh
    2 niro 809 # $Id$
    3 niro 532
    4     # loads given kernel modules
    5     load_kernel_modules()
    6     {
    7     local type="$1"
    8     local module
    9     local args
    10    
    11     echo -e "-- Loading ${type} modules:"
    12     ( cat /etc/modules.${type}; echo) | while read module args
    13     do
    14     case "${module}" in
    15     \#*|"") continue ;;
    16     esac
    17    
    18     if [ -e /lib/${module}.ko ]
    19     then
    20     insmod -f /lib/${module}.ko ${args} > /dev/null 2>&1
    21     [ $? -eq 0 ] && echo -e "-- ${module}"
    22     fi
    23     done
    24     echo
    25     }
    26    
    27     # check_drives $devices $fstype
    28     check_drives()
    29     {
    30     local devices="$1"
    31     local fs="$2"
    32    
    33     for dev in ${devices}
    34     do
    35     mount -t ${fs} ${dev} /sysroot/mnt/cdrom >/dev/null 2>&1
    36     media_found=$?
    37    
    38     # if mount was ok check if cdid exists
    39     if [ "${media_found}" -eq 0 ]
    40     then
    41     [ -e /sysroot/mnt/cdrom/livecdrootfs.sqsh ] && media_id_ok=$?
    42     umount /sysroot/mnt/cdrom
    43    
    44     if [ "${media_id_ok}" -eq 0 ]
    45     then
    46     echo -e "Magellan boot device found."
    47     BOOT_DEVICE="${dev}"
    48 niro 663 FSTYPE="${fs}"
    49 niro 532 break
    50     fi
    51     fi
    52     done
    53     }
    54    
    55     ## some defaults ##
    56     DOSCSI=no
    57     DOUSB=no
    58 niro 894 DOSATA=yes
    59 niro 663 DOFB=no
    60 niro 894 DOPATA=yes
    61 niro 663 FORCED_ROOTFS=""
    62 niro 532
    63     ## starts here ##
    64    
    65     # mount essential filesystems
    66     mount -t proc proc /proc
    67     mount -t sysfs sysfs /sys
    68 niro 894 mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024
    69 niro 532
    70 niro 894 # install all busybox applets
    71     busybox --install -s
    72    
    73 niro 532 # silencio
    74     echo 0 > /proc/sys/kernel/printk
    75    
    76     # check command line for params
    77     for i in $(cat /proc/cmdline)
    78     do
    79     case "${i}" in
    80 niro 894 doscsi) DOSCSI=yes;;
    81     noscsi) DOSCSI=no;;
    82     dousb) DOUSB=yes;;
    83     nousb) DOUSB=no;;
    84     dosata) DOSATA=yes ;;
    85     nosata) DOSATA=no ;;
    86     dofb) DOFB=yes;;
    87     nofb) DOFB=no;;
    88     dopata) DOPATA=yes;;
    89     nopata) DOPATA=no;;
    90     rootfs=*) FORCED_ROOTFS="${i#*=}";;
    91 niro 532 esac
    92     done
    93    
    94     # now load all needed modules
    95 niro 671 [ "${DOFB}" = "yes" ] && load_kernel_modules "framebuffer"
    96 niro 532 load_kernel_modules "generic"
    97 niro 673 [ "${DOPATA}" = "yes" ] && load_kernel_modules "pata"
    98 niro 532 [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi"
    99     [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"
    100     [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"
    101    
    102 niro 894 # populate dev
    103     mdev -s
    104     # handle hotplug events properly
    105     echo /sbin/mdev > /proc/sys/kernel/hotplug
    106    
    107 niro 532 # create newroot mount point
    108     mkdir -p /sysroot
    109     # fake a new filesystem (also needed with an initramfs!!)
    110     mount -t tmpfs tmpfs /sysroot
    111    
    112     mkdir -p /sysroot/mnt/cdrom
    113     mkdir -p /sysroot/mnt/cloop
    114     mkdir -p /sysroot/mnt/magellan
    115    
    116    
    117     # needed for the usbstick, the timeout maybe to short
    118     if [ "${DOUSB}" = "yes" ]; then
    119     echo "-- Waiting 8 seconds for possible usb mount ..."
    120     sleep 8
    121     fi
    122    
    123     # searching cdrom with cdid
    124     BOOT_DEVICE=""
    125     FSTYPE=""
    126    
    127     echo "Searching for a boot device ..."
    128    
    129     # searching usbstick
    130     if [ "${DOUSB}" = "yes" ]; then
    131 niro 663 ROOTFS="vfat"
    132 niro 706 [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    133 niro 663 check_drives "/dev/sd*" "${ROOTFS}"
    134     check_drives "/dev/sg*" "${ROOTFS}"
    135 niro 532 fi
    136    
    137     # for cdrom_device in $CDROM_LIST (ide)
    138 niro 663 ROOTFS="iso9660"
    139 niro 706 [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    140 niro 663 check_drives "/dev/cdroms/*" "${ROOTFS}"
    141     check_drives "/dev/hd*" "${ROOTFS}"
    142 niro 532
    143     # scsi cdroms
    144     if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then
    145 niro 663 ROOTFS="iso9660"
    146 niro 706 [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}"
    147 niro 663 check_drives "/dev/sr*" "${ROOTFS}"
    148     check_drives "/dev/sg*" "${ROOTFS}"
    149     check_drives "/dev/scd*" "${ROOTFS}"
    150 niro 532 fi
    151    
    152     # mount our rootfs from cdrom
    153     if [ "${BOOT_DEVICE}" = "" ]
    154     then
    155     echo "No Magellan boot CD/USBStick found!!!"
    156     ash
    157     exit 1
    158     else
    159     echo -e "Booting from: $BOOT_DEVICE ..."
    160     mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1
    161    
    162     # write our boot_device to /mnt/.bootdev for later use (mtab)
    163     echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev
    164     echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev
    165    
    166     # mount squashfs
    167     echo -e "Mounting squashfs system image ..."
    168     echo
    169     [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0
    170     mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop
    171    
    172     # symlinking cloop rootfs to /mnt as newroot
    173     cd /sysroot
    174    
    175 niro 605 for x in bin sbin lib lib64 boot usr opt
    176 niro 532 do
    177 niro 605 [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x}
    178 niro 532 done
    179     mkdir -p initrd proc tmp sys var/tmp dev media
    180    
    181     # make /sysroot/dev/console & /mnt/dev/null
    182     [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1
    183     [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3
    184 niro 753 # only to be safe and to have a log channel
    185 niro 757 [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0
    186 niro 753 # busybox needs this one
    187 niro 757 [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5
    188 niro 532
    189     (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot)
    190    
    191     # ensure the right permissions
    192     chmod 1777 /sysroot/tmp
    193     chmod 1777 /sysroot/var/tmp
    194     fi
    195    
    196     cd /
    197    
    198 niro 894 # unset hotplug event-manager
    199     echo > /proc/sys/kernel/hotplug
    200    
    201 niro 532 # de-silencio
    202     echo 3 > /proc/sys/kernel/printk
    203    
    204     echo "-- Switching to real sysroot ..."
    205 niro 894 umount /dev
    206 niro 532 umount /sys
    207     umount /proc
    208    
    209     exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console