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#!/bin/sh
PATH=/sbin:/bin:/usr/sbin:/usr/bin
mount -t proc proc /proc
mount -t devtmpfs none /dev
mount -t sysfs sysfs /sys
rootdev=""
opt="rw"
wait=""
nfsroot=""
nfsopts=""
for bootarg in `cat /proc/cmdline`; do
case "$bootarg" in
root=*) rootdev="${bootarg##root=}" ;;
nfsroot=*)
nfsroot=$(echo ${bootarg##nfsroot=} | cut -d ',' -f 1)
nfsopts=$(echo ${bootarg##nfsroot=} | cut -d ',' -f 2-)
nfsopts=${nfsopts##${nfsroot}}
;;
ro) opt="ro" ;;
rootwait) wait="yes" ;;
esac
done
if [ -n "$wait" -a ! -b "${rootdev}" ]; then
echo "Waiting for ${rootdev}..."
count=0
while [ $count -lt 25 ]; do
test -b "${rootdev}" && break
sleep 0.1
count=`expr $count + 1`
done
fi
echo "Mounting ${rootdev}..."
if [ "$rootdev" = "/dev/nfs" ]; then
echo "Using NFS to boot..."
mount -t nfs -o "${opt},${nfsopts}" "${nfsroot}" /mnt || exec sh
else
mount -t ext4 -o "$opt" "${rootdev}" /mnt || exec sh
fi
echo "Switching to rootfs on ${rootdev}..."
mount --move /sys /mnt/sys
mount --move /proc /mnt/proc
mount --move /dev /mnt/dev
exec switch_root /mnt /sbin/init
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