SVN-Revision: 31042master
Felix Fietkau
13 years ago
parent
a660a57d71
commit
6f46704743
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# |
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# service: simple wrapper around start-stop-daemon |
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# |
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# Usage: service ACTION EXEC ARGS... |
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# |
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# Action: |
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# -C check if EXEC is alive |
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# -S start EXEC, passing it ARGS as its arguments |
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# -K kill EXEC, sending it a TERM signal if not specified otherwise |
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# |
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# Environment variables exposed: |
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# SERVICE_DAEMONIZE run EXEC in background |
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# SERVICE_WRITE_PID create a pid-file and use it for matching |
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# SERVICE_MATCH_EXEC use EXEC command-line for matching (default) |
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# SERVICE_MATCH_NAME use EXEC process name for matching |
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# SERVICE_USE_PID assume EXEC create its own pid-file and use it for matching |
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# SERVICE_NAME process name to use (default to EXEC file part) |
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# SERVICE_PID_FILE pid file to use (default to /var/run/$SERVICE_NAME.pid) |
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# SERVICE_SIG signal to send when using -K |
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# SERVICE_SIG_RELOAD default signal used when reloading |
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# SERVICE_SIG_STOP default signal used when stopping |
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# SERVICE_STOP_TIME time to wait for a process to stop gracefully before killing it |
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# SERVICE_UID user EXEC should be run as |
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# SERVICE_GID group EXEC should be run as |
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# |
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# SERVICE_DEBUG don't do anything, but show what would be done |
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# SERVICE_QUIET don't print anything |
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# |
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|
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SERVICE_QUIET=1 |
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SERVICE_SIG_RELOAD="HUP" |
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SERVICE_SIG_STOP="TERM" |
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SERVICE_STOP_TIME=5 |
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SERVICE_MATCH_EXEC=1 |
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|
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service() { |
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local ssd |
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local exec |
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local name |
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local start |
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ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}" |
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case "$1" in |
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-C) |
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ssd="$ssd -K -t" |
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;; |
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-S) |
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ssd="$ssd -S${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}" |
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start=1 |
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;; |
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-K) |
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ssd="$ssd -K${SERVICE_SIG:+ -s $SERVICE_SIG}" |
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;; |
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*) |
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echo "service: unknown ACTION '$1'" 1>&2 |
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return 1 |
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esac |
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shift |
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exec="$1" |
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[ -n "$exec" ] || { |
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echo "service: missing argument" 1>&2 |
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return 1 |
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} |
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[ -x "$exec" ] || { |
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echo "service: file '$exec' is not executable" 1>&2 |
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return 1 |
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} |
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name="${SERVICE_NAME:-${exec##*/}}" |
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[ -z "$SERVICE_USE_PID$SERVICE_WRITE_PID$SERVICE_PID_FILE" ] \ |
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|| ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/$name.pid}" |
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[ -z "$SERVICE_MATCH_NAME" ] || ssd="$ssd -n $name" |
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ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}" |
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[ -z "$SERVICE_MATCH_EXEC$start" ] || ssd="$ssd -x $exec" |
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shift |
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$ssd${1:+ -- "$@"} |
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} |
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|
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service_check() { |
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service -C "$@" |
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} |
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|
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service_signal() { |
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SERVICE_SIG="${SERVICE_SIG:-USR1}" service -K "$@" |
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} |
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|
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service_start() { |
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service -S "$@" |
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} |
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|
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service_stop() { |
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local try |
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SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_STOP}" service -K "$@" || return 1 |
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while [ $((try++)) -lt $SERVICE_STOP_TIME ]; do |
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service -C "$@" || return 0 |
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sleep 1 |
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done |
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SERVICE_SIG="KILL" service -K "$@" |
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sleep 1 |
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! service -C "$@" |
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} |
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|
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service_reload() { |
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SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_RELOAD}" service -K "$@" |
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} |
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|
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service_kill() { |
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cat 1>&2 << __END_OF_WARNING__ |
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# |
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# WARNING: the 'service_kill' function is now deprecated and might be |
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# removed soon. Consider using the other new service_* wrappers instead. |
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# |
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__END_OF_WARNING__ |
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local name="${1}" |
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local pid="${2:-$(pidof "$name")}" |
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local grace="${3:-5}" |
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[ -f "$pid" ] && pid="$(head -n1 "$pid" 2>/dev/null)" |
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for pid in $pid; do |
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[ -d "/proc/$pid" ] || continue |
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local try=0 |
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kill -TERM $pid 2>/dev/null && \ |
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while grep -qs "$name" "/proc/$pid/cmdline" && [ $((try++)) -lt $grace ]; do sleep 1; done |
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kill -KILL $pid 2>/dev/null && \ |
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while grep -qs "$name" "/proc/$pid/cmdline"; do sleep 1; done |
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done |
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} |
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