Adding upstream version 0.143.upstream/0.143upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 1194 insertions, 0 deletions

diff --git a/scripts/functions b/scripts/functions
new file mode 100644
index 0000000..60f9195
--- /dev/null
+++ b/scripts/functions
@@ -0,0 +1,688 @@
+# -*- shell-script -*-
+
+_log_msg()
+{
+	if [ "${quiet?}" = "y" ]; then return; fi
+	# shellcheck disable=SC2059
+	printf "$@"
+	return 0 # Prevents error carry over in case of unavailable console
+}
+
+log_success_msg()
+{
+	_log_msg "Success: %s\\n" "$*"
+}
+
+log_failure_msg()
+{
+	_log_msg "Failure: %s\\n" "$*"
+}
+
+log_warning_msg()
+{
+	_log_msg "Warning: %s\\n" "$*"
+}
+
+log_begin_msg()
+{
+	_log_msg "Begin: %s ... " "$*"
+}
+
+log_end_msg()
+{
+	_log_msg "done.\\n"
+}
+
+panic()
+{
+	local console rest IFS
+
+	if command -v chvt >/dev/null 2>&1; then
+		chvt 1
+	fi
+
+	echo "$@"
+
+	# The panic= parameter implies we should disallow console access
+	if [ -n "${panic?}" ]; then
+		delay=
+		case "${panic?}" in
+		-*[![:digit:].]*)	# invalid: wait forever
+			;;
+		-*)			# timeout < 0: reboot immediately
+			delay=0
+			;;
+		0 | *[![:digit:].]*)	# timeout = 0 or invalid: wait forever
+			;;
+		*)			# timeout > 0: seconds before rebooting
+			delay="${panic}"
+			;;
+		esac
+		if [ -n "${delay}" ]; then
+			echo "Rebooting automatically due to panic= boot argument"
+			sleep "${delay}"
+			reboot -f
+		else
+			echo "Halting automatically due to panic= boot argument"
+			halt -f
+		fi
+		exit  # in case reboot fails, force kernel panic
+	fi
+
+	run_scripts /scripts/panic
+
+	# Try to use setsid, which will enable job control in the shell
+	# and paging in more
+	if command -v setsid >/dev/null 2>&1; then
+		unset IFS
+		read -r console rest </proc/consoles
+		if [ "${console}" = "tty0" ]; then
+			# Need to choose a specific VT
+			console="tty1"
+		fi
+		# We don't have 'setsid -c' so we need to setsid, open
+		# the tty, and finally exec an interactive shell
+		REASON="$*" PS1='(initramfs) ' setsid sh -c "exec sh -i <>/dev/${console} 1>&0 2>&1"
+	else
+		REASON="$*" PS1='(initramfs) ' sh -i </dev/console >/dev/console 2>&1
+	fi
+}
+
+maybe_break()
+{
+	case ",${break?}," in
+	*,$1,*)
+		if [ "$1" = "top" ]; then
+			# udev is not yet running, so load keyboard drivers
+			if [ "${quiet}" = "y" ]; then
+				opts="-q"
+			else
+				opts="-v"
+			fi
+			/sbin/modprobe ${opts} -a i8042 atkbd ehci-pci ehci-orion \
+				 ehci-hcd ohci-hcd ohci-pci uhci-hcd usbhid xhci \
+				 xhci-pci xhci-hcd
+			sleep 2
+			for modalias in /sys/bus/hid/devices/*/modalias; do
+				if [ -f "${modalias}" ]; then
+					/sbin/modprobe ${opts} -b "$(cat "${modalias}")"
+				fi
+			done
+		fi
+		panic "Spawning shell within the initramfs"
+		;;
+	esac
+}
+
+# For boot time only; this is overridden at build time in hook-functions
+run_scripts()
+{
+	initdir=${1}
+	[ ! -d "${initdir}" ] && return
+
+	shift
+	. "${initdir}/ORDER"
+}
+
+# Load custom modules first
+load_modules()
+{
+	if [ -e /conf/modules ]; then
+		while read -r m; do
+			# Skip empty lines
+			if [ -z "$m" ];  then
+				continue
+			fi
+			# Skip comments - d?ash removes whitespace prefix
+			com=$(printf "%.1s" "${m}")
+			if [ "$com" = "#" ]; then
+				continue
+			fi
+			# shellcheck disable=SC2086
+			/sbin/modprobe $m
+		done < /conf/modules
+	fi
+}
+
+_uptime() {
+	local uptime
+	uptime="$(cat /proc/uptime)"
+	uptime="${uptime%%[. ]*}"
+	echo "$uptime"
+}
+
+time_elapsed() {
+	if [ -z "${starttime-}" ]; then
+		log_failure_msg "time_elapsed() called before \$starttime initialized"
+		echo 0
+	fi
+	local delta
+	delta="$(_uptime)"
+	delta=$((delta - starttime))
+	echo "$delta"
+}
+
+# lilo compatibility
+parse_numeric() {
+	case $1 in
+	*:*)
+		# Does it match /[0-9]*:[0-9]*/?
+		minor=${1#*:}
+		major=${1%:*}
+		case $major$minor in
+		*[!0-9]*)
+			# No.
+			return
+			;;
+		esac
+		;;
+	"" | *[!A-Fa-f0-9]*)
+		# "", "/*", etc.
+		return
+		;;
+	*)
+		# [A-Fa-f0-9]*
+		value=$(( 0x${1} ))
+		minor=$(( (value & 0xff) | (value >> 12) & 0xfff00 ))
+		major=$(( (value >> 8) & 0xfff ))
+		;;
+	esac
+
+	# shellcheck disable=SC2034
+	ROOT="/dev/block/${major}:${minor}"
+}
+
+# Parameter: device node to check
+# Echos fstype to stdout
+# Return value: indicates if an fs could be recognized
+get_fstype ()
+{
+	local FS FSTYPE
+	FS="${1}"
+
+	# blkid has a more complete list of file systems,
+	# but fstype is more robust
+	FSTYPE="unknown"
+	eval "$(fstype "${FS}" 2> /dev/null)"
+	if [ "$FSTYPE" = "unknown" ]; then
+		FSTYPE=$(blkid -o value -s TYPE "${FS}") || return
+	fi
+	echo "${FSTYPE}"
+	return 0
+}
+
+_set_netdev_from_ip_param()
+{
+	# If the ip= parameter is present and specifies a device, use
+	# that in preference to any device name we already have
+	local IFS=:
+	set -f
+	# shellcheck disable=SC2086
+	set -- ${IP-}
+	set +f
+	if [ -n "${6-}" ]; then
+		DEVICE="$6"
+		return 0
+	fi
+	return 1
+}
+
+_set_netdev_from_hw_address()
+{
+	local want_address="$1"
+	local device
+	for device in /sys/class/net/*; do
+		if [ -f "$device/address" ] &&
+		   [ "$(cat "$device/address")" = "$want_address" ]; then
+			DEVICE="${device##*/}"
+			return 0
+		fi
+	done
+	return 1
+}
+
+_usable_netdev_exists()
+{
+	# Look for a device with IFF_LOOPBACK clear and (IFF_BROADCAST
+	# or IFF_POINTTOPOINT) set.  This is the same test the kernel
+	# and ipconfig apply to find a device.
+	local device
+	local flags
+	for device in /sys/class/net/*; do
+		if [ -f "${device}/flags" ]; then
+			flags="$(cat "${device}/flags")"
+			if [ "$((flags & 8))" -eq 0 ] &&
+			   [ "$((flags & 0x12))" -ne 0 ]; then
+				return 0
+			fi
+		fi
+	done
+	return 1
+}
+
+_update_ip_param()
+{
+	# If the ip= parameter is present, and is a colon-separated list,
+	# but does not specify a device, substitute in the device name
+	# we have
+	local IFS=:
+	set -f
+	# shellcheck disable=SC2086
+	set -- ${IP}
+	set +f
+	if [ -z "${6-}" ] && [ $# -ge 2 ] && [ -n "${DEVICE-}" ]; then
+		IP="$1:$2:$3:$4:$5:${DEVICE}"
+		shift 6 || shift $#
+		IP="${IP}:$*"
+	fi
+}
+
+configure_networking()
+{
+	local netdev_desc
+
+	# The order of precedence here is:
+	# 1. Device specified by ip= kernel parameter
+	# 2. Device matching MAC specified by BOOTIF= kernel parameter
+	# 3. Build-time DEVICE variable
+	# In case 2 we only discover the device name while waiting
+	# for a device.
+	if _set_netdev_from_ip_param; then
+		netdev_desc="${DEVICE}"
+	elif [ -n "${BOOTIF-}" ]; then
+		# pxelinux sets BOOTIF to a value based on the mac address of the
+		# network card used to PXE boot
+		# pxelinux sets BOOTIF to 01-$mac_address
+
+		# strip off the leading "01-", which isn't part of the mac
+		# address
+		temp_mac=${BOOTIF#*-}
+
+		# convert to typical mac address format by replacing "-" with ":"
+		bootif_mac=""
+		IFS='-'
+		for x in $temp_mac ; do
+			if [ -z "$bootif_mac" ]; then
+				bootif_mac="$x"
+			else
+				bootif_mac="$bootif_mac:$x"
+			fi
+		done
+		unset IFS
+
+		_set_netdev_from_hw_address "${bootif_mac}"
+		netdev_desc="device with address ${bootif_mac}"
+	elif [ -n "${DEVICE-}" ]; then
+		netdev_desc="${DEVICE}"
+	else
+		netdev_desc="any network device"
+	fi
+
+	# networking already configured thus bail out
+	[ -n "${DEVICE-}" ] && [ -e /run/net-"${DEVICE}".conf ] && return 0
+
+	local netdevwait=180
+	log_begin_msg "Waiting up to ${netdevwait} secs for ${netdev_desc} to become available"
+	while true; do
+		if [ "$(time_elapsed)" -ge "$netdevwait" ]; then
+			log_failure_msg "Network device did not appear in time"
+			break
+		fi
+		if [ -n "${DEVICE-}" ]; then
+			[ -e "/sys/class/net/${DEVICE}" ] && break
+		elif [ -n "${bootif_mac-}" ]; then
+			_set_netdev_from_hw_address "${bootif_mac}" && break
+		else
+			_usable_netdev_exists && break
+		fi
+		sleep 1
+	done
+	log_end_msg
+
+	_update_ip_param
+
+	wait_for_udev 10
+
+	# support ip options see linux sources
+	# Documentation/filesystems/nfs/nfsroot.txt
+	# Documentation/frv/booting.txt
+
+	for ROUNDTTT in 2 3 4 6 9 16 25 36 64 100; do
+
+		# The NIC is to be configured if this file does not exist.
+		# Ip-Config tries to create this file and when it succeds
+		# creating the file, ipconfig is not run again.
+		for x in /run/net-"${DEVICE-}".conf /run/net-*.conf ; do
+			[ -e "$x" ] && break 2
+		done
+
+		case "${IP-}" in
+		none|off)
+			# Do nothing
+			;;
+		""|on|any)
+			# Bring up device
+			ipconfig -t ${ROUNDTTT} "${DEVICE}"
+			;;
+		dhcp|bootp|rarp|both)
+			ipconfig -t ${ROUNDTTT} -c "${IP}" -d "${DEVICE}"
+			;;
+		*)
+			ipconfig -t ${ROUNDTTT} -d "$IP"
+			;;
+		esac
+	done
+
+	# source ipconfig output (first try specific bootdevice, then any
+	# interface...). ipconfig should have quit after first response
+	local file
+	for file in "/run/net-${DEVICE-}.conf" /run/net-*.conf; do
+		if [ -e "$file" ]; then
+			. "$file"
+			break
+		fi
+	done
+
+	netinfo_to_resolv_conf /etc/resolv.conf "/run/net-${DEVICE-}.conf" /run/net-*.conf
+
+	# shellcheck disable=SC2169
+	if test -n "${HOSTNAME-}"; then
+		# shellcheck disable=SC2169
+		persist_hostname "${HOSTNAME}" "${DNSDOMAIN-}"
+	fi
+}
+
+# Write resolv.conf from /run/net-<device> style files.
+# $1=resolv.conf path (print to stdout if "-" is specified)
+# remaining parameters: /run/net-<device> style files
+netinfo_to_resolv_conf()
+{
+	local domain="" n="" nameservers="" resolv_conf="" search="" output="$1" CR="
+"
+	shift
+
+	for net_file in "$@"; do
+		# Define sourced variables as local to avoid causing side effects.
+		# shellcheck disable=SC2034
+		local DEVICE PROTO IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4ROUTE0SUBNET \
+			IPV4ROUTE0GATEWAY IPV4ROUTE1SUBNET IPV4ROUTE1GATEWAY IPV4GATEWAY \
+			IPV4DNS0 IPV4DNS1 HOSTNAME DNSDOMAIN NISDOMAIN ROOTSERVER ROOTPATH \
+			filename UPTIME DHCPLEASETIME DOMAINSEARCH
+		[ -e "$net_file" ] || continue
+		. "$net_file" || { echo "Error: Failed to source $net_file" >&2; return 1; }
+		if test -n "${DNSDOMAIN}"; then
+			domain="${DNSDOMAIN}"
+		fi
+		for n in "${IPV4DNS0}" "${IPV4DNS1}"; do
+			if test -z "$n" -o "$n" = 0.0.0.0; then
+				continue
+			fi
+			# Remove duplicates
+			case " ${nameservers} " in
+				*\ $n\ *)
+					continue ;;
+			esac
+			nameservers="${nameservers} ${n}"
+		done
+		for n in ${DOMAINSEARCH}; do
+			[ -n "$n" ] || continue
+			# Remove duplicates
+			case " ${search} " in
+				*\ $n\ *)
+					continue ;;
+			esac
+			search="${search} ${n}"
+		done
+	done
+
+	# Construct content for resolv.conf
+	if test -n "${domain}"; then
+		resolv_conf="${resolv_conf}domain ${domain}${CR}"
+	fi
+	for n in ${nameservers}; do
+		resolv_conf="${resolv_conf}nameserver $n${CR}"
+	done
+	if test -n "${search}"; then
+		resolv_conf="${resolv_conf}search ${search# }${CR}"
+	fi
+
+	if test -z "$resolv_conf"; then
+		echo "no search or nameservers found in $*" 1>&2
+		return
+	fi
+	if test "$output" = "-"; then
+		printf "%s" "$resolv_conf"
+	else
+		printf "%s" "$resolv_conf" > "$output"
+	fi
+}
+
+_generate_hosts_content()
+{
+	local hostname="$1"
+	local domain="$2"
+	local fqdn
+
+	if test -n "${domain}"; then
+		fqdn="${hostname}.${domain}	"
+	else
+		fqdn=""
+	fi
+	cat <<EOF
+127.0.0.1	localhost
+127.0.1.1	${fqdn}${hostname}
+
+# The following lines are desirable for IPv6 capable hosts
+::1     localhost ip6-localhost ip6-loopback
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+EOF
+}
+
+# Write hostname into /etc/hostname and /etc/hosts
+# $1=hostname
+# $2=domain (optional)
+persist_hostname()
+{
+	local hostname="$1"
+	local domain="${2-}"
+
+	echo "$hostname" > /etc/hostname
+	echo "$hostname" > /proc/sys/kernel/hostname
+	_generate_hosts_content "$hostname" "$domain" > /etc/hosts
+}
+
+# Wait for queued kernel/udev events
+wait_for_udev()
+{
+	command -v udevadm >/dev/null 2>&1 || return 0
+	udevadm settle ${1:+--timeout=$1}
+}
+
+# Find a specific fstab entry
+# $1=mountpoint
+# $2=fstype (optional)
+# returns 0 on success, 1 on failure (not found or no fstab)
+read_fstab_entry() {
+	# Not found by default.
+	found=1
+
+	for file in ${rootmnt?}/etc/fstab; do
+		if [ -f "$file" ]; then
+			# shellcheck disable=SC2034
+			while read -r MNT_FSNAME MNT_DIR MNT_TYPE MNT_OPTS MNT_FREQ MNT_PASS MNT_JUNK; do
+				case "$MNT_FSNAME" in
+				  ""|\#*)
+					continue;
+					;;
+				esac
+				if [ "$MNT_DIR" = "$1" ]; then
+					if [ -n "${2-}" ]; then
+						[ "$MNT_TYPE" = "$2" ] || continue;
+					fi
+					found=0
+					break 2
+				fi
+			done < "$file"
+		fi
+	done
+
+	return $found
+}
+
+# Resolve device node from a name.  This expands any LABEL or UUID.
+# $1=name
+# Resolved name is echoed.
+resolve_device() {
+	DEV="$1"
+
+	case "$DEV" in
+	LABEL=* | UUID=* | PARTLABEL=* | PARTUUID=*)
+		DEV="$(blkid -l -t "$DEV" -o device)" || return 1
+		;;
+	esac
+	[ -e "$DEV" ] && echo "$DEV"
+}
+
+# Check a file system.
+# $1=device
+# $2=mountpoint (for diagnostics only)
+# $3=type (may be "auto")
+_checkfs_once()
+{
+	DEV="$1"
+	NAME="$2"
+	TYPE="$3"
+	if [ "$NAME" = "/" ] ; then
+		NAME="root"
+	fi
+	FSCK_LOGFILE=/run/initramfs/fsck.log
+	FSCK_STAMPFILE=/run/initramfs/fsck-${NAME#/}
+
+	if [ "${TYPE}" = "auto" ]; then
+		TYPE="$(get_fstype "${DEV}")"
+	fi
+
+	FSCKCODE=0
+	if [ -z "${TYPE}" ]; then
+		log_warning_msg "Type of $NAME file system is unknown, so skipping check."
+		return
+	fi
+	if ! command -v fsck >/dev/null 2>&1; then
+		log_warning_msg "fsck not present, so skipping $NAME file system"
+		return
+	fi
+	if [ "${fastboot?}" = "y" ] ; then
+		log_warning_msg "Fast boot enabled, so skipping $NAME file system check."
+		return
+	fi
+
+	if [ "${forcefsck?}" = "y" ]
+	then
+		force="-f"
+	else
+		force=""
+	fi
+
+	if [ "${fsckfix?}" = "y" ]
+	then
+		fix="-y"
+	elif [ "${fsckfix?}" = "n" ]
+	then
+		fix="-n"
+	else
+		fix="-a"
+	fi
+
+	spinner=""
+	if [ -z "${debug?}" ]; then
+		spinner="-C"
+	fi
+
+	if [ "${quiet}" = n ]
+	then
+		log_begin_msg "Will now check $NAME file system"
+		# shellcheck disable=SC2086
+		logsave -a -s $FSCK_LOGFILE fsck $spinner $force $fix -V -t "$TYPE" "$DEV"
+		FSCKCODE=$?
+		log_end_msg
+	else
+		log_begin_msg "Checking $NAME file system"
+		# shellcheck disable=SC2086
+		logsave -a -s $FSCK_LOGFILE fsck $spinner $force $fix -T -t "$TYPE" "$DEV"
+		FSCKCODE=$?
+		log_end_msg
+	fi
+
+	# NOTE: "failure" is defined as exiting with a return code of
+	# 4, possibly or-ed with other flags. A return code of 1
+	# indicates that file system errors were corrected but that
+	# the boot may proceed.
+	#
+	if [ "$FSCKCODE" -eq 32 ]
+	then
+		log_warning_msg "File system check was interrupted by user"
+	elif [ $((FSCKCODE & 4)) -eq 4 ]
+	then
+		log_failure_msg "File system check of the $NAME filesystem failed"
+		return 1
+	elif [ "$FSCKCODE" -gt 1 ]
+	then
+		log_warning_msg "File system check failed but did not detect errors"
+		sleep 5
+	else
+		true >"$FSCK_STAMPFILE"
+	fi
+	return 0
+}
+
+checkfs()
+{
+	while ! _checkfs_once "$@"; do
+		panic "The $2 filesystem on $1 requires a manual fsck"
+	done
+}
+
+# Mount a file system.  We parse the information from the fstab.  This
+# should be overridden by any boot script which can mount arbitrary
+# filesystems such as /usr.  This default implementation delegates to
+# local or nfs based upon the filesystem type.
+# $1=mountpoint mount location
+mountfs()
+{
+	type=local
+	read_fstab_entry "$1"
+	if [ "${MNT_TYPE}" = "nfs" ] || [ "${MNT_TYPE}" = "nfs4" ]; then
+		type=nfs
+	fi
+
+	${type}_mount_fs "$1"
+}
+
+# Mount the root file system.  It should be overridden by all
+# boot scripts.
+mountroot()
+{
+	:
+}
+
+# Run /scripts/${boot}-top.  This should be overridden by all boot
+# scripts.
+mount_top()
+{
+	:
+}
+
+# Run /scripts/${boot}-premount.  This should be overridden by all boot
+# scripts.
+mount_premount()
+{
+	:
+}
+
+# Run /scripts/${boot}-bottom.  This should be overridden by all boot
+# scripts.
+mount_bottom()
+{
+	:
+}
diff --git a/scripts/init-top/all_generic_ide b/scripts/init-top/all_generic_ide
new file mode 100755
index 0000000..cdf69cc
--- /dev/null
+++ b/scripts/init-top/all_generic_ide
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+PREREQ=""
+prereqs()
+{
+	echo "$PREREQ"
+}
+case $1 in
+# get pre-requisites
+prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+# shellcheck disable=SC2013
+for x in $(cat /proc/cmdline); do
+	case ${x} in
+	all_generic_ide)
+		/sbin/modprobe ata_generic all_generic_ide=1
+		;;
+	all_generic_ide=*)
+		if [ -n "${x#all_generic_ide=}" ]; then
+			/sbin/modprobe ata_generic all_generic_ide=1
+		fi
+		;;
+	esac
+done
diff --git a/scripts/init-top/blacklist b/scripts/init-top/blacklist
new file mode 100755
index 0000000..d860603
--- /dev/null
+++ b/scripts/init-top/blacklist
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+PREREQ=""
+
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case $1 in
+# get pre-requisites
+prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+# sanity check
+[ -z "${blacklist?}" ] && exit 0
+
+# write blacklist to modprobe.d
+IFS=','
+for b in ${blacklist}; do
+	echo "blacklist $b" >> /etc/modprobe.d/initramfs.conf
+done
diff --git a/scripts/init-top/keymap b/scripts/init-top/keymap
new file mode 100755
index 0000000..1c6b2dc
--- /dev/null
+++ b/scripts/init-top/keymap
@@ -0,0 +1,18 @@
+#!/bin/sh
+
+PREREQ=""
+prereqs()
+{
+	echo "$PREREQ"
+}
+case $1 in
+# get pre-requisites
+prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+if [ -x /bin/setupcon ]; then
+	/bin/setupcon
+fi
diff --git a/scripts/local b/scripts/local
new file mode 100644
index 0000000..8f9597f
--- /dev/null
+++ b/scripts/local
@@ -0,0 +1,223 @@
+# Local filesystem mounting			-*- shell-script -*-
+
+local_top()
+{
+	if [ "${local_top_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-top"
+		run_scripts /scripts/local-top
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_top_used=yes
+}
+
+local_block()
+{
+	[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-block"
+	run_scripts /scripts/local-block "$@"
+	[ "$quiet" != "y" ] && log_end_msg
+}
+
+local_premount()
+{
+	if [ "${local_premount_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-premount"
+		run_scripts /scripts/local-premount
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_premount_used=yes
+}
+
+local_bottom()
+{
+	if [ "${local_premount_used}" = "yes" ] || [ "${local_top_used}" = "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/local-bottom"
+		run_scripts /scripts/local-bottom
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	local_premount_used=no
+	local_top_used=no
+}
+
+# $1=device ID to mount
+# $2=optionname (for root and etc)
+# $3=panic if device is missing (true or false, default: true)
+# Sets $DEV to the resolved device node
+local_device_setup()
+{
+	local dev_id="$1"
+	local name="$2"
+	local may_panic="${3:-true}"
+	local real_dev
+	local time_elapsed
+	local count
+
+	wait_for_udev 10
+
+	# Load ubi with the correct MTD partition and return since fstype
+	# doesn't work with a char device like ubi.
+	if [ -n "$UBIMTD" ]; then
+		/sbin/modprobe ubi "mtd=$UBIMTD"
+		DEV="${dev_id}"
+		return
+	fi
+
+	# Don't wait for a device that doesn't have a corresponding
+	# device in /dev and isn't resolvable by blkid (e.g. mtd0)
+	if [ "${dev_id#/dev}" = "${dev_id}" ] &&
+	   [ "${dev_id#*=}" = "${dev_id}" ]; then
+		DEV="${dev_id}"
+		return
+	fi
+
+	# If the root device hasn't shown up yet, give it a little while
+	# to allow for asynchronous device discovery (e.g. USB).  We
+	# also need to keep invoking the local-block scripts in case
+	# there are devices stacked on top of those.
+	if ! real_dev=$(resolve_device "${dev_id}") ||
+	   ! get_fstype "${real_dev}" >/dev/null; then
+		log_begin_msg "Waiting for ${name}"
+
+		# Timeout is max(30, rootdelay) seconds (approximately)
+		slumber=30
+		if [ "${ROOTDELAY:-0}" -gt $slumber ]; then
+			slumber=$ROOTDELAY
+		fi
+
+		while true; do
+			sleep 1
+			time_elapsed="$(time_elapsed)"
+
+			local_block "${dev_id}"
+
+			# If mdadm's local-block script counts the
+			# number of times it is run, make sure to
+			# run it the expected number of times.
+			while true; do
+				if [ -f /run/count.mdadm.initrd ]; then
+					count="$(cat /run/count.mdadm.initrd)"
+				elif [ -n "${count}" ]; then
+					# mdadm script deleted it; put it back
+					count=$((count + 1))
+					echo "${count}" >/run/count.mdadm.initrd
+				else
+					break
+				fi
+				if [ "${count}" -ge "${time_elapsed}" ]; then
+					break;
+				fi
+				/scripts/local-block/mdadm "${dev_id}"
+			done
+
+			if real_dev=$(resolve_device "${dev_id}") &&
+			   get_fstype "${real_dev}" >/dev/null; then
+				wait_for_udev 10
+				log_end_msg 0
+				break
+			fi
+			if [ "${time_elapsed}" -ge "${slumber}" ]; then
+				log_end_msg 1 || true
+				break
+			fi
+		done
+	fi
+
+	# We've given up, but we'll let the user fix matters if they can
+	while ! real_dev=$(resolve_device "${dev_id}") ||
+	      ! get_fstype "${real_dev}" >/dev/null; do
+		if ! $may_panic; then
+			echo "Gave up waiting for ${name}"
+			return 1
+		fi
+		echo "Gave up waiting for ${name} device.  Common problems:"
+		echo " - Boot args (cat /proc/cmdline)"
+		echo "   - Check rootdelay= (did the system wait long enough?)"
+		if [ "${name}" = root ]; then
+			echo "   - Check root= (did the system wait for the right device?)"
+		fi
+		echo " - Missing modules (cat /proc/modules; ls /dev)"
+		panic "ALERT!  ${dev_id} does not exist.  Dropping to a shell!"
+	done
+
+	DEV="${real_dev}"
+}
+
+local_mount_root()
+{
+	local_top
+	if [ -z "${ROOT}" ]; then
+		panic "No root device specified. Boot arguments must include a root= parameter."
+	fi
+	local_device_setup "${ROOT}" "root file system"
+	ROOT="${DEV}"
+
+	# Get the root filesystem type if not set
+	if [ -z "${ROOTFSTYPE}" ] || [ "${ROOTFSTYPE}" = auto ]; then
+		FSTYPE=$(get_fstype "${ROOT}")
+	else
+		FSTYPE=${ROOTFSTYPE}
+	fi
+
+	local_premount
+
+	if [ "${readonly?}" = "y" ]; then
+		roflag=-r
+	else
+		roflag=-w
+	fi
+
+	checkfs "${ROOT}" root "${FSTYPE}"
+
+	# Mount root
+	# shellcheck disable=SC2086
+	if ! mount ${roflag} ${FSTYPE:+-t "${FSTYPE}"} ${ROOTFLAGS} "${ROOT}" "${rootmnt?}"; then
+		panic "Failed to mount ${ROOT} as root file system."
+	fi
+}
+
+local_mount_fs()
+{
+	read_fstab_entry "$1"
+
+	local_device_setup "$MNT_FSNAME" "$1 file system"
+	MNT_FSNAME="${DEV}"
+
+	local_premount
+
+	if [ "${readonly}" = "y" ]; then
+		roflag=-r
+	else
+		roflag=-w
+	fi
+
+	if [ "$MNT_PASS" != 0 ]; then
+		checkfs "$MNT_FSNAME" "$MNT_DIR" "${MNT_TYPE}"
+	fi
+
+	# Mount filesystem
+	if ! mount ${roflag} -t "${MNT_TYPE}" -o "${MNT_OPTS}" "$MNT_FSNAME" "${rootmnt}${MNT_DIR}"; then
+		panic "Failed to mount ${MNT_FSNAME} as $MNT_DIR file system."
+	fi
+}
+
+mountroot()
+{
+	local_mount_root
+}
+
+mount_top()
+{
+	# Note, also called directly in case it's overridden.
+	local_top
+}
+
+mount_premount()
+{
+	# Note, also called directly in case it's overridden.
+	local_premount
+}
+
+mount_bottom()
+{
+	# Note, also called directly in case it's overridden.
+	local_bottom
+}
diff --git a/scripts/local-premount/resume b/scripts/local-premount/resume
new file mode 100755
index 0000000..63dcc49
--- /dev/null
+++ b/scripts/local-premount/resume
@@ -0,0 +1,46 @@
+#!/bin/sh
+
+PREREQ=""
+
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case $1 in
+# get pre-requisites
+prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+if [ -z "${resume?}" ] || [ ! -e /sys/power/resume ]; then
+	exit 0
+fi
+
+. /scripts/functions
+. /scripts/local
+
+if ! local_device_setup "${resume}" "suspend/resume device" false; then
+	exit 0
+fi
+
+if [ "$(get_fstype "${DEV}")" = suspend ] &&
+   command -v plymouth >/dev/null &&
+   plymouth --ping; then
+	plymouth display-message --text="Resuming from hibernation"
+
+	# The above command does not wait for a framebuffer update to
+	# complete, so the kernel can freeze the framebuffer before
+	# the message is even visible.  Wait just a moment to make
+	# that less likely.
+	sleep 0.1
+fi
+
+# hardcode path, uswsusp ships an resume binary too
+if [ -n "${resume_offset?}" ]; then
+	/bin/resume "${DEV}" "${resume_offset}"
+else
+	/bin/resume "${DEV}"
+fi
diff --git a/scripts/nfs b/scripts/nfs
new file mode 100644
index 0000000..26a969b
--- /dev/null
+++ b/scripts/nfs
@@ -0,0 +1,166 @@
+# NFS filesystem mounting			-*- shell-script -*-
+
+# FIXME This needs error checking
+
+nfs_top()
+{
+	if [ "${nfs_top_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/nfs-top"
+		run_scripts /scripts/nfs-top
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	nfs_top_used=yes
+}
+
+nfs_premount()
+{
+	if [ "${nfs_premount_used}" != "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/nfs-premount"
+		run_scripts /scripts/nfs-premount
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	nfs_premount_used=yes
+}
+
+nfs_bottom()
+{
+	if [ "${nfs_premount_used}" = "yes" ] || [ "${nfs_top_used}" = "yes" ]; then
+		[ "${quiet?}" != "y" ] && log_begin_msg "Running /scripts/nfs-bottom"
+		run_scripts /scripts/nfs-bottom
+		[ "$quiet" != "y" ] && log_end_msg
+	fi
+	nfs_premount_used=no
+	nfs_top_used=no
+}
+
+# parse nfs bootargs and mount nfs
+nfs_mount_root_impl()
+{
+	configure_networking
+
+	# get nfs root from dhcp
+	if [ "${NFSROOT}" = "auto" ]; then
+		# check if server ip is part of dhcp root-path
+		if [ "${ROOTPATH#*:}" = "${ROOTPATH}" ]; then
+			NFSROOT=${ROOTSERVER}:${ROOTPATH}
+		else
+			NFSROOT=${ROOTPATH}
+		fi
+
+	# nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
+	elif [ -n "${NFSROOT}" ]; then
+		# nfs options are an optional arg
+		if [ "${NFSROOT#*,}" != "${NFSROOT}" ]; then
+			NFSOPTS="-o ${NFSROOT#*,}"
+		fi
+		NFSROOT=${NFSROOT%%,*}
+		if [ "${NFSROOT#*:}" = "$NFSROOT" ]; then
+			NFSROOT=${ROOTSERVER}:${NFSROOT}
+		fi
+	fi
+
+	if [ -z "${NFSOPTS}" ]; then
+		NFSOPTS="-o retrans=10"
+	fi
+
+	nfs_premount
+
+	if [ "${readonly?}" = y ]; then
+		roflag="-o ro"
+	else
+		roflag="-o rw"
+	fi
+
+	# shellcheck disable=SC2086
+	nfsmount -o nolock ${roflag} ${NFSOPTS} "${NFSROOT}" "${rootmnt?}"
+}
+
+# NFS root mounting
+nfs_mount_root()
+{
+	nfs_top
+
+	# For DHCP
+	/sbin/modprobe af_packet
+
+	wait_for_udev 10
+
+	# Default delay is around 180s
+	delay=${ROOTDELAY:-180}
+
+	# loop until nfsmount succeeds
+	nfs_mount_root_impl
+	ret=$?
+	nfs_retry_count=0
+	while [ ${nfs_retry_count} -lt "${delay}" ] \
+		&& [ $ret -ne 0 ] ; do
+		[ "$quiet" != "y" ] && log_begin_msg "Retrying nfs mount"
+		sleep 1
+		nfs_mount_root_impl
+		ret=$?
+		nfs_retry_count=$(( nfs_retry_count + 1 ))
+		[ "$quiet" != "y" ] && log_end_msg
+	done
+}
+
+nfs_mount_fs_impl()
+{
+	configure_networking
+
+	if [ -z "${NFSOPTS}" ]; then
+		NFSOPTS="-o retrans=10"
+	fi
+
+	nfs_premount
+
+	if [ "${readonly}" = y ]; then
+		roflag="-o ro"
+	else
+		roflag="-o rw"
+	fi
+
+	read_fstab_entry "$1"
+
+	# shellcheck disable=SC2086
+	nfsmount ${roflag} ${NFSOPTS} -o "${MNT_OPTS}" "$MNT_FSNAME" "${rootmnt}${MNT_DIR}"
+}
+
+nfs_mount_fs()
+{
+	nfs_top
+
+	# For DHCP
+	/sbin/modprobe af_packet
+
+	wait_for_udev 10
+
+	# Default delay is around 180s
+	delay=${ROOTDELAY:-180}
+
+	# Don't loop here; we can't sanely check if it worked like for
+	# the rootfs or /etc.
+	nfs_mount_fs_impl "$1"
+}
+
+mountroot()
+{
+	nfs_mount_root
+}
+
+mount_top()
+{
+	# Note, also called directly in case it's overridden.
+	nfs_top
+}
+
+mount_premount()
+{
+	# Note, also called directly in case it's overridden.
+	nfs_premount
+}
+
+mount_bottom()
+{
+	# Note, also called directly in case it's overridden.
+	nfs_bottom
+}