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|
#!/bin/busybox ash
# Install busybox's applets as symlinks
/bin/busybox --install -s
. /init_functions
msg ":: Loading Initramfs"
/bin/mount -t proc proc /proc
/bin/mount -t sysfs sys /sys
read CMDLINE </proc/cmdline
export CMDLINE
# Used so hooks can override params to kinit
export kinit_params=""
export root=""
echo "/sbin/modprobe" > /proc/sys/kernel/modprobe
# if available, start udevd at this stage
if [ -x /sbin/udevd ]; then
msg ":: Starting udevd..."
echo > /proc/sys/kernel/hotplug
/sbin/udevd --daemon
msg "done."
fi
for cmd in ${CMDLINE}; do
case "${cmd}" in
\#*) break ;; # ignore everything after a # in the commandline
# The kernel passes those to the kernel on its own
[0123456Ss]) ;;
[0-9]*) ;;
single) ;;
#Allow "init=X" to pass-through
init=*) kinit_params="${kinit_params} ${cmd}" ;;
# only export stuff that does work with dash :)
*=*) cmd="$(replace -s= "${cmd}" '.' '_')"
cmd="$(replace -s= "${cmd}" '-' '_')"
export "${cmd}"
;;
*) cmd="$(replace "${cmd}" '.' '_')"
cmd="$(replace "${cmd}" '-' '_')"
export "${cmd}=y"
;;
esac
done
if [ -n "${disablehooks}" ]; then
for d in $(replace "${disablehooks}" ','); do
export "hook_${d}=disabled"
done
fi
if [ -n "${disablemodules}" ]; then
for d in $(replace "${disablemodules}" ','); do
export "mod_${d}=disabled"
done
fi
if [ -n "${earlymodules}" ]; then
for m in $(replace "${earlymodules}" ','); do
/sbin/modprobe -q ${m} > /dev/null 2>&1
done
fi
. /config
for m in ${MODULES}; do
TST=""
eval "TST=\$mod_${m}"
if [ "${TST}" != "disabled" ]; then
/sbin/modprobe -q ${m} > /dev/null 2>&1
fi
done
# If rootdelay is empty or not a non-negative integer, set it to 10
if [ -z "${rootdelay}" ] || ! [ "${rootdelay}" -ge 0 ]; then
export rootdelay=10
fi
# We'll wait for the root device, so make sure klibc doesn't
export kinit_params="${kinit_params} rootdelay=0"
if [ -e "/hooks" ]; then
for h in ${HOOKS}; do
TST=""
eval "TST=\$hook_${h}"
if [ "${TST}" != "disabled" ]; then
run_hook () { msg "${h}: no run function defined"; }
if [ -e "/hooks/${h}" ]; then
. /hooks/${h}
msg ":: Running Hook [${h}]"
run_hook
fi
fi
done
fi
if [ "${break}" = "y" ]; then
echo ":: Break requested, type 'exit' to resume operation"
PS1="ramfs$ " /bin/sh -i
fi
# If we boot from NFS, don't check for a block device in /dev
# Let kinit do it all
if [ -z "${nfsroot}" -a "${root}" != "/dev/nfs" ]; then
if ! poll_device "${root}" ${rootdelay}; then
msg "\nRoot device '${root}' doesn't exist, attempting to create it"
eval $(/bin/parseblock "${root}")
if [ -z "${BLOCKDEVICE}" ]; then
echo "ERROR: Failed to parse block device ids for '${root}'"
else
echo "/bin/mknod /dev/root b ${BLOCKDEVICE}"
/bin/mknod /dev/root b ${BLOCKDEVICE} >/dev/null
export root="/dev/root"
fi
if [ ! -b "${root}" -a ! -h "${root}" ]; then
err "Unable to detect or create root device '${root}'"
echo "You are being dropped to a recovery shell"
echo " Type 'reboot' to reboot"
echo " Type 'exit' to try and continue booting"
echo ""
echo "If the device '${root}' gets created while you are here,"
echo "try adding 'rootdelay=10' or higher to the kernel command-line"
PS1="ramfs$ " /bin/sh -i
msg "Trying to continue (this will most likely fail)..."
fi
fi
fi
if [ -f "/message" ]; then
msg "$(cat /message)"
fi
msg ":: Initramfs Completed - control passing to kinit"
#Special handling if udev is running
udevpid=$(/bin/minips -C udevd -o pid=)
if [ -n "${udevpid}" ]; then
/bin/kill -9 ${udevpid} > /dev/null 2>&1
/bin/sleep 0.01
fi
exec /bin/kinit "$@" -- "root=${root}" ${kinit_params} > /dev/null 2>&1
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