94 lines
1.7 KiB
Bash
94 lines
1.7 KiB
Bash
#!/bin/sh
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sysv() {
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/sbin/shutdown "$@"
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}
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single() {
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runsvchdir single
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}
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abort() {
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printf '%s\n' "$1" >&2
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exit 1
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}
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usage() {
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abort "Usage: ${0##*/} [-fF] [-kchPr] time [warning message]"
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}
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runit_init() {
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while getopts akrhPHfFnct: opt; do
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case "$opt" in
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a|n|H) abort "'-$opt' is not implemented";;
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t) ;;
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f) touch /fastboot;;
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F) touch /forcefsck;;
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k) action=true;;
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c) action=cancel;;
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h|P) action="/sbin/runit-init 0";;
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r) action="/sbin/runit-init 6";;
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[?]) usage;;
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esac
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done
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shift $((OPTIND - 1))
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[ $# -eq 0 ] && usage
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time=$1; shift
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message="${*:-system is going down}"
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if [ "$action" = "cancel" ]; then
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kill "$(cat /run/shutdown.pid)"
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if [ -e /etc/nologin ] && ! [ -s /etc/nologin ]; then
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rm /etc/nologin
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fi
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echo "${*:-shutdown cancelled}" | wall
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exit
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fi
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touch /run/shutdown.pid 2>/dev/null || abort "Not enough permissions to execute ${0#*/}"
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echo $$ >/run/shutdown.pid
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case "$time" in
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now) time=0;;
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+*) time=${time#+};;
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*:*) abort "absolute time is not implemented";;
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*) abort "invalid time";;
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esac
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for break in 5 0; do
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[ "$time" -gt "$break" ] || continue
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[ "$break" = 0 ] && touch /etc/nologin
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printf '%s in %s minutes\n' "$message" "$time" | wall
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printf 'shutdown: sleeping for %s minutes... ' "$(( time - break ))"
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sleep $(( (time - break) * 60 ))
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time="$break"
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printf '\n'
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[ "$break" = 0 ] && rm /etc/nologin
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done
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printf '%s NOW\n' "$message" | wall
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$action
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}
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initsystem=$( ps -p 1 -o comm= )
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action=single
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case "$initsystem" in
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'init')
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sysv "$@"
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;;
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'runit')
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runit_init "$@"
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;;
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*)
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exit
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esac
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