spark-rc/bin/rc

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#!/bin/bash
# Functions
rc.rescue() { exec "${cfg_rc_rescue_shell:-"$SHELL"}"; }
rc.motd() {
[[ -f "/etc/rc.motd" ]] && {
while read; do
printf "$REPLY"
done < "/etc/rc.motd"
}
return 0
}
rc.mount() {
local fs
local fs_type
local mountpoint
local mount_options
fs="$1"
fs_type="$2"
mountpoint="$3"
mount_options="${4:-defaults}"
mount "$1" -n -t "$2" -o "$mount_options" "$3"
}
rc.mount_misc() {
mountpoint -q /proc || { rc.mount proc proc /proc; }
mountpoint -q /dev || { rc.mount dev devtmpfs /dev; }
}
rc.parse_cmdline() {
[[ -f "/proc/cmdline" ]] && {
boot_cmdline=( $(</proc/cmdline) )
}
for i in "${boot_cmdline[@]}"; do
case "$i" in
init.single) rc.rescue;;
esac
done
}
rc.services_start() {
local service_name start_mode
for i in "${cfg_services[@]}"; do
unset service_name
[[ "$i" =~ ^@ ]] && {
service_name="${i##*@}"
start_mode='bg'
}
[[ "$i" =~ ^% ]] && {
service_name="${i##*%}"
start_mode='watch'
}
service_name=${service_name:-$i}
start_mode="${start_mode:-start}"
case "$start_mode" in
bg) service "$service_name" start &;;
start) service "$service_name" start;;
*) echo "Mode $start_mode not supported";;
esac
done
}
rc.services_stop() {
echo "Stopping services..."
local service_name
for i in "${cfg_services[@]}"; do
service_name="${i##*@}"; service_name="${service_name##*%}"
service "$service_name" stop &>/dev/null &
done
wait
}
rc.stop_everything() {
echo "Politely asking all processes to shut down..."
/opt/sbase/bin/killall5 -s 15; sleep 3
echo "Killing the remaning ones..."
/opt/sbase/bin/killall5 -s 9
}
rc.unmount_everything() {
echo "Unmounting filesystems..."
umount -a
}
rc.remount_root() {
echo "Remounting / read-only..."
mount / -o remount,ro
}
rc.boot() {
rc.mount_misc
rc.hostname
rc.modules
rc.services_start
wait
rc.motd
}
rc.halt() {
case "$action" in
poweroff|shutdown) echo 'o' > /proc/sysrq-trigger;;
halt) :;;
reboot|*) echo 'b' > /proc/sysrq-trigger;;
esac
}
rc.shutdown() {
rc.services_stop
rc.stop_everything
rc.unmount_everything
rc.remount_root
echo "Halt complete."
rc.halt
}
rc.hostname() {
[[ "$cfg_hostname" ]] && { hostname "$cfg_hostname"; }
}
rc.modules() {
for i in "${cfg_modules[@]}"; do
modprobe "$i"
done
}
rc.main() {
source "/etc/rc.conf"
action="${1:-boot}"
case "$action" in
boot)
echo "Welcome to `uname -rs`"
rc.boot
;;
poweroff|reboot|shutdown)
rc.shutdown
rc.halt
;;
esac
}
# Main part
rc.main "$@"