120 lines
3.3 KiB
Bash
Executable file
120 lines
3.3 KiB
Bash
Executable file
#!/bin/bash
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# Version: 0.3.0
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# Copyright (c) 2005-2022:
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# Darren 'Tadgy' Austin <darren (at) afterdark.org.uk>
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# Licensed under the terms of the GNU General Public License version 3.
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EXEC="/usr/bin/rsync"
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ARGS=('--daemon' '--config=/etc/rsyncd/rsyncd.conf')
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PIDFILE="/run/rsyncd.pid"
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# Allow configuration in /etc/default to override.
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# Additional available variables:
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# ENVIRONMENT=() # Extra environment passed to $EXEC. Must be an array.
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# EXTRA_ARGS=() # Extra arguments passed to $EXEC. Must be an array.
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# SLAY_DELAY="" # Delay between the SIGTERM and SIGKILL on a 'stop'. Default: 2s.
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# RESTART_DELAY="" # Delay between stopping and starting on a 'restart'. Default: 2s.
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[[ -e "/etc/default/${0##*rc.}" ]] && source "/etc/default/${0##*rc.}"
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error() {
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printf "%s: %s: %s\\n" "${BASH_SOURCE##*/}" "${EXEC##*/}" "$*" >&2
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}
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checkconfigured() {
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# This function can be used to perform any pre-start tests; hopfully to insure the daemon
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# can start correctly, before actually trying to start it. A return value of 0 means the
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# tests were passed and the daemon should be started. Any other value prevents the
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# daemon from being started, and an error message will be emitted.
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return 0
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}
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checkstatus() {
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local RUNPIDS="$({ pgrep -f "$EXEC"; pgrep -F "$PIDFILE" 2>/dev/null; } | sort -u )"
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if [[ ! -z "$RUNPIDS" ]]; then
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printf "%s: %s: %s" "${BASH_SOURCE##*/}" "${EXEC##*/}" "running"
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if [[ ! -z "$PIDFILE" ]]; then
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if [[ ! -e "$PIDFILE" ]]; then
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printf "%s" ", but .pid file does not exist"
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elif ! grep "\<$(< "$PIDFILE")\>" <<<"$RUNPIDS" >/dev/null 2>&1; then
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printf "%s" ", but .pid file is stale"
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fi
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fi
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printf "\\n"
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else
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printf "%s: %s: %s\\n" "${BASH_SOURCE##*/}" "${EXEC##*/}" "stopped"
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return 1
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fi
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return 0
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}
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startdaemon() {
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if [[ ! -e "$EXEC" ]]; then
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error "not found"
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return 1
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elif [[ ! -x "$EXEC" ]]; then
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error "not executable"
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return 1
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elif ! checkconfigured; then
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error "not started - pre-start checks failed"
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return 1
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fi
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${ENVIRONMENT:+declare ${ENVIRONMENT[*]};} "$EXEC" ${ARGS[*]} ${EXTRA_ARGS[*]}
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if (( $? != 0 )); then
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error "error starting daemon"
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return 1
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else
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return 0
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fi
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}
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stopdaemon() {
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[[ -e "$PIDFILE" ]] && kill -TERM "$(< "$PIDFILE")" >/dev/null 2>&1 || kill -TERM "$(pgrep -f "$EXEC" | tr $'\n' " ")" >/dev/null 2>&1
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sleep "${SLAY_DELAY:-2}"
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if checkstatus >/dev/null; then
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error "failed to stop gracefully - slaying"
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kill -KILL "$({ cat "$PIDFILE"; pgrep -f "$EXEC"; } 2>/dev/null | sort -u | tr $'\n' " ")" >/dev/null 2>&1
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fi
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return 0
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}
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case "$1" in
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'start')
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if checkstatus >/dev/null; then
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error "already running"
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printf " %s\\n" "Try: $BASH_SOURCE status" >&2
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RET=1
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else
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startdaemon
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RET=$?
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fi
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;;
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'stop')
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if ! checkstatus >/dev/null; then
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error "not running"
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printf " %s\\n" "Try: $BASH_SOURCE status" >&2
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RET=1
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else
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stopdaemon
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RET=$?
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fi
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;;
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'restart')
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if checkstatus >/dev/null; then
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stopdaemon && sleep "${RESTART_DELAY:-2}" && startdaemon
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RET=$?
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else
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startdaemon
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RET=$?
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fi
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;;
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'status')
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checkstatus
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RET=$?
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;;
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*)
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printf "%s\\n" "Usage: $BASH_SOURCE <start|stop|restart|status>" >&2
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RET=1
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;;
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esac
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return $RET 2>/dev/null || exit $RET
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