79 lines
2.5 KiB
Bash
79 lines
2.5 KiB
Bash
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FOUND_ISO=
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RAMSIZE=100000
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msg ":: Creating new root ramdisk (dinamic size=${RAMSIZE}k) on /dev/shm..."
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mkdir /newroot
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/bin/mount -t tmpfs -o "size=${RAMSIZE}k" /dev/shm /newroot
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mkdir -p /newroot/flash /newroot/cdrom /newroot/squashfs
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#
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# findiso(): looks for ISO9660 images stored in flash root
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#
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findiso(){
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msg ":: Looking for openmamba ISO cdrom images"
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# try removable devices only
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for i in /newroot/flash/openmamba-*.iso; do
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/bin/losetup /dev/loop0 $i
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if mount -r -t iso9660 /dev/loop0 /newroot/cdrom >/dev/null 2>&1; then
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if test -r /newroot/cdrom/rootfs.compressed; then
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msg ":: Valid ISO image $i found..."
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FOUND_ISO="$i"
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return 0
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fi
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umount /newroot/cdrom
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fi
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/bin/losetup /dev/loop0
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done
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return 1
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}
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#/sbin/splash_util -c repaint ${splash_add} -t default --mesg="Looking for cdrom device" --progress="4444"
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while true; do
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msg ":: root device is ${root}"
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if ! mount -t ext3 ${root} /newroot/flash >/dev/null 2>&1; then
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if ! mount -t ext2 ${root} /newroot/flash >/dev/null 2>&1; then
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err ":: Unable to mount USB rootfs. Supported filesystems are ext2 and ext3."
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fi
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fi
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findiso
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if [ "$FOUND_ISO" ]; then
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# /sbin/splash_util -c repaint ${splash_add} -t default --mesg="Mounting compressed filesystem" --progress="5555"
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msg ":: Mounting compressed filesystem"
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/bin/losetup /dev/loop1 /newroot/cdrom/rootfs.compressed
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mount -r -t squashfs /dev/loop1 /newroot/squashfs
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msg ":: Creating directories and symlinks on ramdisk..."
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mkdir -p \
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/newroot/tmp /newroot/proc /newroot/sys \
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/newroot/initrd /newroot/mnt /newroot/media \
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/newroot/oldroot
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ln -s squashfs/bin /newroot/bin
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ln -s squashfs/boot /newroot/boot
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ln -s squashfs/lib /newroot/lib
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ln -s squashfs/opt /newroot/opt
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ln -s squashfs/sbin /newroot/sbin
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ln -s squashfs/srv /newroot/srv
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ln -s squashfs/usr /newroot/usr
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chroot /newroot /bin/cp -a \
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/squashfs/dev /squashfs/home /squashfs/var \
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/squashfs/etc /squashfs/root /
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# Create empty utmp and wtmp
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:> /newroot/var/run/utmp
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:> /newroot/var/run/wtmp
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[ "${init}" ] || init=/sbin/init
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msg ":: Running init, runlevel:${runlevel}"
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exec run-init /newroot ${init} ${runlevel}
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exit 0
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else
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msg ":: Could not find a valid ISO image; opening a command prompt."
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/bin/sh.shared
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fi
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done
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