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    Annotation of /trunk/mkinitrd/lib/linuxrc.sh

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    Revision 485 - (hide annotations) (download) (as text)
    Sun Apr 29 20:56:14 2007 UTC (17 years ago) by niro
    File MIME type: application/x-sh
    File size: 3968 byte(s) 
    - split pata modules from modules.generic to modules.pata and added nopata option
    1 niro 333 #!/bin/sh
    2 niro 485 # $Header: /home/cvsd/magellan-cvs/magellan-src/mkinitrd/lib/linuxrc.sh,v 1.8 2007-04-29 20:55:30 niro Exp $
    3 niro 333
    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     FSTYPE=${fs}
    49     break
    50     fi
    51     fi
    52     done
    53     }
    54    
    55     ## some defaults ##
    56     DOSCSI=no
    57     DOUSB=no
    58     DOSATA=no
    59 niro 485 NOPATA=no
    60 niro 333
    61     ## starts here ##
    62    
    63     # mount essential filesystems
    64     mount -t proc proc /proc
    65     mount -t sysfs sysfs /sys
    66    
    67     # silencio
    68     echo 0 > /proc/sys/kernel/printk
    69    
    70     # check command line for params
    71     for i in $(cat /proc/cmdline)
    72     do
    73     case "${i}" in
    74     doscsi)
    75     DOSCSI=yes
    76     ;;
    77     dousb)
    78     DOUSB=yes
    79     ;;
    80     dosata)
    81     DOSATA=yes
    82     ;;
    83 niro 485 nopata)
    84     NOPATA=yes
    85     ;;
    86 niro 333 esac
    87     done
    88    
    89     # now load all needed modules
    90     load_kernel_modules "generic"
    91 niro 485 [ "${NOPATA}" != "yes" ] && load_kernel_modules "pata"
    92 niro 333 [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi"
    93     [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb"
    94     [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata"
    95    
    96     # create newroot mount point
    97     mkdir -p /sysroot
    98     # fake a new filesystem (also needed with an initramfs!!)
    99     mount -t tmpfs tmpfs /sysroot
    100    
    101     mkdir -p /sysroot/mnt/cdrom
    102     mkdir -p /sysroot/mnt/cloop
    103     mkdir -p /sysroot/mnt/magellan
    104    
    105    
    106     # needed for the usbstick, the timeout maybe to short
    107     if [ "${DOUSB}" = "yes" ]; then
    108 niro 353 echo "-- Waiting 8 seconds for possible usb mount ..."
    109     sleep 8
    110 niro 333 fi
    111    
    112     # searching cdrom with cdid
    113     BOOT_DEVICE=""
    114     FSTYPE=""
    115    
    116     echo "Searching for a boot device ..."
    117    
    118     # searching usbstick
    119 niro 335 if [ "${DOUSB}" = "yes" ]; then
    120 niro 470 check_drives "/dev/sd*" "vfat"
    121     check_drives "/dev/sg*" "vfat"
    122 niro 335 fi
    123 niro 333
    124     # for cdrom_device in $CDROM_LIST (ide)
    125     check_drives "/dev/cdroms/*" iso9660
    126     check_drives "/dev/hd*" iso9660
    127    
    128     # scsi cdroms
    129 niro 335 if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then
    130     check_drives "/dev/sr*" iso9660
    131 niro 470 check_drives "/dev/sg*" iso9660
    132     check_drives "/dev/scd*" iso9660
    133 niro 335 fi
    134 niro 333
    135     # mount our rootfs from cdrom
    136     if [ "${BOOT_DEVICE}" = "" ]
    137     then
    138     echo "No Magellan boot CD/USBStick found!!!"
    139     ash
    140     exit 1
    141     else
    142     echo -e "Booting from: $BOOT_DEVICE ..."
    143     mount -o ro -t "${FSTYPE}" "${BOOT_DEVICE}" /sysroot/mnt/cdrom >/dev/null 2>&1
    144    
    145     # write our boot_device to /mnt/.bootdev for later use (mtab)
    146     echo "BOOTDEV=${BOOT_DEVICE}" > /sysroot/.bootdev
    147     echo "FSTYPE=${FSTYPE}" >> /sysroot/.bootdev
    148    
    149     # mount squashfs
    150     echo -e "Mounting squashfs system image ..."
    151     echo
    152     [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0
    153     mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop
    154    
    155     # symlinking cloop rootfs to /mnt as newroot
    156     cd /sysroot
    157    
    158     for x in bin sbin lib boot usr opt
    159     do
    160     ln -s mnt/cloop/${x} ${x}
    161     done
    162 niro 353 mkdir -p initrd proc tmp sys var/tmp dev media
    163 niro 333
    164     # make /sysroot/dev/console & /mnt/dev/null
    165     [ ! -e /sysroot/dev/console ] && mknod -m 600 /sysroot/dev/console c 5 1
    166     [ ! -e /sysroot/dev/null ] && mknod -m 666 /sysroot/dev/null c 1 3
    167    
    168     (cd /sysroot/mnt/cloop; cp -a etc root home var /sysroot)
    169    
    170 niro 334 # ensure the right permissions
    171 niro 333 chmod 1777 /sysroot/tmp
    172     chmod 1777 /sysroot/var/tmp
    173     fi
    174    
    175     cd /
    176    
    177     # de-silencio
    178     echo 3 > /proc/sys/kernel/printk
    179    
    180     echo "-- Switching to real sysroot ..."
    181     umount /sys
    182     umount /proc
    183    
    184     exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console