diff options
Diffstat (limited to 'files/90mgalive/mgalive-root.sh')
| -rwxr-xr-x | files/90mgalive/mgalive-root.sh | 169 |
1 files changed, 14 insertions, 155 deletions
diff --git a/files/90mgalive/mgalive-root.sh b/files/90mgalive/mgalive-root.sh index 5c2a061..0d05e97 100755 --- a/files/90mgalive/mgalive-root.sh +++ b/files/90mgalive/mgalive-root.sh @@ -1,171 +1,30 @@ #!/bin/sh -# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- -# ex: ts=8 sw=4 sts=4 et filetype=sh - -type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh -type det_fs >/dev/null 2>&1 || . /lib/fs-lib.sh [ -f /tmp/root.info ] && . /tmp/root.info PATH=/usr/sbin:/usr/bin:/sbin:/bin -if getargbool 0 rd.live.debug -y rdlivedebug; then - exec > /tmp/liveroot.$$.out - exec 2>> /tmp/liveroot.$$.out - set -x -fi - [ -z "$1" ] && exit 1 livedev="$1" -# parse various live image specific options that make sense to be -# specified as their own things -live_dir=$(getarg rd.live.dir live_dir) -[ -z "$live_dir" ] && live_dir="loopbacks" -getargbool 0 rd.live.ram -y live_ram && live_ram="yes" -getargbool 0 rd.live.overlay.reset -y reset_overlay && reset_overlay="yes" -getargbool 0 rd.live.overlay.readonly -y readonly_overlay && readonly_overlay="--readonly" || readonly_overlay="" -overlay=$(getarg rd.live.overlay overlay) - -# CD/DVD media check -[ -b $livedev ] && fs=$(blkid -s TYPE -o value $livedev) -if [ "$fs" = "iso9660" -o "$fs" = "udf" ]; then - check="yes" -fi -getarg rd.live.check check || check="" -if [ -n "$check" ]; then - [ -x /bin/plymouth ] && /bin/plymouth --hide-splash - checkisomd5 --verbose $livedev || : - if [ $? -ne 0 ]; then - die "CD check failed!" - exit 1 - fi - [ -x /bin/plymouth ] && /bin/plymouth --show-splash -fi - -# determine filesystem type for a filesystem image -det_img_fs() { - blkid -s TYPE -u noraid -o value "$1" -} - -for arg in $CMDLINE; do case $arg in ro|rw) liverw=$arg ;; esac; done -# set up paths that we expect -mkdir -m 0755 -p /live/{distrib,media,memory,union} -if [ -f $livedev ]; then - # no mount needed - we've already got the LiveOS image in initramfs - # check filesystem type and handle accordingly - fstype=$(det_img_fs $livedev) - case $fstype in - squashfs) SQUASHED=$livedev;; - auto) die "cannot mount live image (unknown filesystem type)" ;; - *) FSIMG=$livedev ;; - esac - [ -e /sys/fs/$fstype ] || modprobe $fstype -else - mount -n -t $fstype -o ${liverw:-ro} $livedev /live - if [ "$?" != "0" ]; then - die "Failed to mount block device of live image" - exit 1 - fi -fi - -# overlay setup helper function -do_live_overlay() { - # create a sparse file for the overlay - # overlay: if non-ram overlay searching is desired, do it, - # otherwise, create traditional overlay in ram - OVERLAY_LOOPDEV=$( losetup -f ) - - l=$(blkid -s LABEL -o value $livedev) || l="" - u=$(blkid -s UUID -o value $livedev) || u="" - - if [ -z "$overlay" ]; then - pathspec="/${live_dir}/overlay-$l-$u" - elif ( echo $overlay | grep -q ":" ); then - # pathspec specified, extract - pathspec=$( echo $overlay | sed -e 's/^.*://' ) - fi - - if [ -z "$pathspec" -o "$pathspec" = "auto" ]; then - pathspec="/${live_dir}/overlay-$l-$u" - fi - devspec=$( echo $overlay | sed -e 's/:.*$//' ) - - # need to know where to look for the overlay - setup="" - if [ -n "$devspec" -a -n "$pathspec" -a -n "$overlay" ]; then - mkdir -m 0755 /run/initramfs/overlayfs - mount -n -t auto $devspec /run/initramfs/overlayfs || : - if [ -f /run/initramfs/overlayfs$pathspec -a -w /run/initramfs/overlayfs$pathspec ]; then - losetup $OVERLAY_LOOPDEV /run/initramfs/overlayfs$pathspec - if [ -n "$reset_overlay" ]; then - dd if=/dev/zero of=$OVERLAY_LOOPDEV bs=64k count=1 2>/dev/null - fi - setup="yes" - fi - umount -l /run/initramfs/overlayfs || : - fi - - if [ -z "$setup" ]; then - if [ -n "$devspec" -a -n "$pathspec" ]; then - warn "Unable to find persistent overlay; using temporary" - sleep 5 - fi - - dd if=/dev/null of=/overlay bs=1024 count=1 seek=$((512*1024)) 2> /dev/null - losetup $OVERLAY_LOOPDEV /overlay - fi - - # set up the snapshot - echo 0 `blockdev --getsz $BASE_LOOPDEV` snapshot $BASE_LOOPDEV $OVERLAY_LOOPDEV p 8 | dmsetup create $readonly_overlay live-rw -} - -# live cd helper function -do_live_from_base_loop() { -# do_live_overlay -} +# create live tree +mkdir -m 0755 -p /live/media +mkdir -m 0755 -p /live/distrib +mkdir -m 0755 -p /live/memory +mkdir -m 0755 -p /live/union -#### OLD NASH LOAD from Mga1 livecds -# nash-mount -o ro -t iso9660 LABEL=Livecd-1-GNOME /live/media -# /bin/losetup /dev/loop0 /live/media/loopbacks/distrib-lzma.sqfs -# nash-mount -o ro -t squashfs /dev/loop0 /live/distrib -# mount -t tmpfs -o mode=755 /live/memory /live/memory -# sh -c 'mount -o dirs=/live/memory=rw:/live/distrib=ro -t unionfs unionfs /live/union' -# plymouth --newroot=/live/union -# echo 0x0100 > /proc/sys/kernel/real-root-dev -# umount /sys -# sh -c 'umount /proc/bus/usb 2>/dev/null' -# umount /proc -# pivot_root /live/union /live/union/initrd -# sh -c 'rmdir /initrd/live/union' -# sh -c 'cd /initrd/live; for i in `ls -1`; do [ -d $i ] || continue; mkdir -p /live/$i; mount -n --move $i /live/$i; rmdir $i; done' -# rmdir /initrd/live -# nash-mount -o mode=0755 -t tmpfs /dev /dev -# sh -c 'rm -rf /dev/loop' -# sh -c 'mv /initrd/dev/* /dev/' -# +# mount the livecd +mount -n -t iso9660 -o ro $livedev /live/media +LOOPDEV=$( losetup -f ) +losetup -r $LOOPDEV /live/media/loopbacks/distrib-lzma.sqfs +mount -n -t squashfs -o ro $LOOPDEV /live/distrib +mount -n -t tmpfs -o mode=755 /live/memory /live/memory +mount -n -t unionfs -o dirs=/live/memory=rw:/live/distrib=ro unionfs /live/union -### FIXME ### DONT HARDCODE MEDIA NAME -mount -o ro -t iso9660 /dev/disk/by-label/LiveCD-2-KDE4 /live/media -losetup /dev/loop0 /live/media/loopbacks/distrib-lzma.sqfs -mount -o ro -t squashfs /dev/loop0 /live/distrib -mount -t tmpfs -o mode=755 /live/memory /live/memory -sh -c 'mount -o dirs=/live/memory=rw:/live/distrib=ro -t unionfs unionfs /live/union' -plymouth --newroot=/live/union -echo 0x0100 > /proc/sys/kernel/real-root-dev -umount /sys -sh -c 'umount /proc/bus/usb 2>/dev/null' -umount /proc -pivot_root /live/union /live/union/initrd -sh -c 'rmdir /initrd/live/union' -sh -c 'cd /initrd/live; for i in `ls -1`; do [ -d $i ] || continue; mkdir -p /live/$i; mount -n --move $i /live/$i; rmdir $i; done' -rmdir /initrd/live -#mount -o mode=0755 -t tmpfs /dev /dev -# sh -c 'rm -rf /dev/loop' -# sh -c 'mv /initrd/dev/* /dev/' +ln -s /live/union /dev/root -#printf '/bin/mount %s /dev/mapper/live-rw %s\n' "$ROOTFLAGS" "$NEWROOT" > $hookdir/mount/01-$$-live.sh +printf '/bin/mount --move /live/union %s\n' "$NEWROOT" > $hookdir/mount/01-$$-live.sh need_shutdown |