129 lines
2.8 KiB
Bash
Executable File
129 lines
2.8 KiB
Bash
Executable File
#!/bin/ash
|
|
|
|
VERSION=1.9.1-pre0
|
|
NEWROOT=/newroot
|
|
SINGLEMODE=no
|
|
|
|
# basic environment
|
|
export PATH=/usr/bin:/bin:/usr/sbin:/sbin
|
|
|
|
# basic mounts
|
|
mount -t proc -o noexec,nosuid,nodev proc /proc
|
|
mount -t sysfs -o noexec,nosuid,nodev sysfs /sys
|
|
|
|
# some helpers
|
|
ebegin() {
|
|
echo -n " * $*: "
|
|
}
|
|
eend() {
|
|
local msg
|
|
if [ "$1" = 0 ] || [ $# -lt 1 ] ; then
|
|
echo "ok."
|
|
else
|
|
shift
|
|
echo "failed. $*"
|
|
echo "Emergency recovery shell started."
|
|
exec /bin/busybox sh
|
|
fi
|
|
}
|
|
|
|
scan_drivers() {
|
|
if [ "$AUTODETECT" != no ] ; then
|
|
find /sys -name modalias | xargs sort | while read a ; do
|
|
modprobe $a 2>/dev/null \
|
|
|| echo $a >> /tmp/hwdrivers.failed
|
|
done
|
|
fi
|
|
}
|
|
|
|
# gotta start from somewhere :)
|
|
echo "Starting Alpine $VERSION"
|
|
|
|
# read the kernel options
|
|
for i in `cat /proc/cmdline` ; do
|
|
case $i in
|
|
s|single|1)
|
|
SINGLEMODE=yes ;;
|
|
modules=*)
|
|
MODULES="`echo ${i#modules=} | tr ',' ' '`";;
|
|
noautodetect)
|
|
AUTODETECT=no;;
|
|
*=*) eval KOPT_$i ;;
|
|
*) eval KOPT_$i=yes ;;
|
|
esac
|
|
done
|
|
|
|
ALPINE_DEV=${KOPT_alpine_dev%%:*}
|
|
ALPINE_MNT=/media/$ALPINE_DEV
|
|
|
|
# hide kernel messages
|
|
dmesg -n 1
|
|
|
|
# setup /dev
|
|
ebegin "Starting mdev"
|
|
mount -t tmpfs -o exec,nosuid,mode=0755 mdev /dev
|
|
mknod -m 666 /dev/null c 1 3
|
|
ln -s sr0 /dev/cdrom
|
|
echo "/sbin/mdev" > /proc/sys/kernel/hotplug
|
|
mdev -s
|
|
RC=$?
|
|
[ -d /dev/pts ] || mkdir -m 755 /dev/pts
|
|
[ -c /dev/ptmx ] || mknod -m 666 /dev/ptmx c 5 2
|
|
mount -t devpts -o gid=5,mode=0620,noexec,nosuid devpts /dev/pts
|
|
[ -d /dev/shm ] || mkdir /dev/shm
|
|
mount -t tmpfs -o nodev,nosuid,noexec shm /dev/shm
|
|
eend $RC
|
|
|
|
# load available drivers to get access to modloop media
|
|
ebegin "Loading boot drivers"
|
|
[ "$MODULES" ] && modprobe $MODULES 2> /dev/null
|
|
scan_drivers
|
|
scan_drivers
|
|
eend 0
|
|
|
|
# locate boot media and mount it
|
|
ebegin "Mounting boot media"
|
|
mount $ALPINE_MNT >/dev/null 2>&1
|
|
eend $?
|
|
ebegin "Mounting loopback device for kernel modules"
|
|
modprobe loop
|
|
mount -o loop,ro -t cramfs /media/$ALPINE_DEV/$(dirname ${KOPT_BOOT_IMAGE:-""})/modloop.cmg /.modloop
|
|
rc=$?
|
|
if [ "$rc" = 0 ]; then
|
|
rm -rf /lib/modules
|
|
ln -sf /.modloop/modules /lib
|
|
fi
|
|
if [ -d $ALPINE_MNT/firmware ]; then
|
|
mkdir -p /lib/firmware
|
|
cp -a $ALPINE_MNT/firmware/* /lib/firmware/
|
|
fi
|
|
eend $?
|
|
|
|
# early console?
|
|
if [ "$SINGLEMODE" = "yes" ]; then
|
|
echo "Entering single mode. Type 'exit' to continue booting."
|
|
sh
|
|
fi
|
|
|
|
# more drivers
|
|
ebegin "Loading hardware drivers"
|
|
scan_drivers
|
|
eend 0
|
|
|
|
# install new root
|
|
ebegin "Installing packets to root filesystem"
|
|
mount -t tmpfs -o size=50M tmpfs $NEWROOT
|
|
apk create --root /newroot
|
|
apk add --root /newroot --repository /media/cdrom/apks
|
|
eend $?
|
|
|
|
# switch over to new root
|
|
cat /proc/mounts | while read DEV DIR TYPE OPTS ; do
|
|
if [ "$DIR" != "/" -a "$DIR" != "$NEWROOT" -a -d "$DIR" ]; then
|
|
mkdir -p $NEWROOT/$DIR
|
|
mount -o move $DIR $NEWROOT/$DIR
|
|
fi
|
|
done
|
|
sync
|
|
exec /bin/busybox switch_root $NEWROOT /sbin/init $KOPT_init_args || exec /bin/busybox sh
|