Contents of /trunk/mkinitrd-magellan/livecd/linuxrc.sh
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Revision 894 -
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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)
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 | #!/bin/sh |
| 2 | # $Id$ |
| 3 | |
| 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=yes |
| 59 | DOFB=no |
| 60 | DOPATA=yes |
| 61 | FORCED_ROOTFS="" |
| 62 | |
| 63 | ## starts here ## |
| 64 | |
| 65 | # mount essential filesystems |
| 66 | mount -t proc proc /proc |
| 67 | mount -t sysfs sysfs /sys |
| 68 | mount -t tmpfs tmpfs /dev -o rw,mode=0644,size=1024 |
| 69 | |
| 70 | # install all busybox applets |
| 71 | busybox --install -s |
| 72 | |
| 73 | # 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 | 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="${i#*=}";; |
| 91 | esac |
| 92 | done |
| 93 | |
| 94 | # now load all needed modules |
| 95 | [ "${DOFB}" = "yes" ] && load_kernel_modules "framebuffer" |
| 96 | load_kernel_modules "generic" |
| 97 | [ "${DOPATA}" = "yes" ] && load_kernel_modules "pata" |
| 98 | [ "${DOSCSI}" = "yes" ] && load_kernel_modules "scsi" |
| 99 | [ "${DOUSB}" = "yes" ] && load_kernel_modules "usb" |
| 100 | [ "${DOSATA}" = "yes" ] && load_kernel_modules "sata" |
| 101 | |
| 102 | # populate dev |
| 103 | mdev -s |
| 104 | # handle hotplug events properly |
| 105 | echo /sbin/mdev > /proc/sys/kernel/hotplug |
| 106 | |
| 107 | # 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 | ROOTFS="vfat" |
| 132 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
| 133 | check_drives "/dev/sd*" "${ROOTFS}" |
| 134 | check_drives "/dev/sg*" "${ROOTFS}" |
| 135 | fi |
| 136 | |
| 137 | # for cdrom_device in $CDROM_LIST (ide) |
| 138 | ROOTFS="iso9660" |
| 139 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
| 140 | check_drives "/dev/cdroms/*" "${ROOTFS}" |
| 141 | check_drives "/dev/hd*" "${ROOTFS}" |
| 142 | |
| 143 | # scsi cdroms |
| 144 | if [ "${DOSCSI}" = "yes" ] || [ "${DOSATA}" = "yes" ]; then |
| 145 | ROOTFS="iso9660" |
| 146 | [[ ! -z ${FORCED_ROOTFS} ]] && ROOTFS="${FORCED_ROOTFS}" |
| 147 | check_drives "/dev/sr*" "${ROOTFS}" |
| 148 | check_drives "/dev/sg*" "${ROOTFS}" |
| 149 | check_drives "/dev/scd*" "${ROOTFS}" |
| 150 | fi |
| 151 | |
| 152 | # mount our rootfs from cdrom |
| 153 | if [ "${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=${FSTYPE}" >> /sysroot/.bootdev |
| 165 | |
| 166 | # mount squashfs |
| 167 | echo -e "Mounting squashfs system image ..." |
| 168 | echo |
| 169 | [ ! -e /dev/loop0 ] && mknod /dev/loop0 b 7 0 |
| 170 | mount -o loop,ro -t squashfs /sysroot/mnt/cdrom/livecdrootfs.sqsh /sysroot/mnt/cloop |
| 171 | |
| 172 | # symlinking cloop rootfs to /mnt as newroot |
| 173 | cd /sysroot |
| 174 | |
| 175 | for x in bin sbin lib lib64 boot usr opt |
| 176 | do |
| 177 | [ -d mnt/cloop/${x} ] && ln -s mnt/cloop/${x} ${x} |
| 178 | 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 | # only to be safe and to have a log channel |
| 185 | [ ! -e /sysroot/dev/tty ] && mknod /sysroot/dev/tty c 5 0 |
| 186 | # busybox needs this one |
| 187 | [ ! -e /sysroot/dev/tty5 ] && mknod /sysroot/dev/tty5 c 4 5 |
| 188 | |
| 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 | # unset hotplug event-manager |
| 199 | echo > /proc/sys/kernel/hotplug |
| 200 | |
| 201 | # de-silencio |
| 202 | echo 3 > /proc/sys/kernel/printk |
| 203 | |
| 204 | echo "-- Switching to real sysroot ..." |
| 205 | umount /dev |
| 206 | umount /sys |
| 207 | umount /proc |
| 208 | |
| 209 | exec run-init /sysroot /sbin/init $@ </sysroot/dev/console >/sysroot/dev/console |