yay signals
Signed-off-by: fbt <fbt@fleshless.org>
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76
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@ -21,22 +21,23 @@ die() {
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## Run the command and wait for it to die
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svc() {
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declare job_pid
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svc::cleanup() {
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kill -n "$service_stop_signal" "$service_pid"
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kill -n "$service_stop_signal" "$job_pid"
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pid_wait "$service_pid" && {
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rm -f $svc_pidfile $service_ready_flag
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}
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}; trap 'svc::cleanup' TERM INT
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}; trap 'svc::cleanup' TERM
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svc::reload() {
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kill -n "$service_reload_signal" "$service_pid"
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kill -n "$service_reload_signal" "$job_pid"
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}; trap 'svc::reload' HUP
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"$@" &
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service_pid=$!
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"$@" & job_pid=$!
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while nullexec kill -n 0 "$service_pid"; do
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while nullexec kill -n 0 "$job_pid"; do
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wait
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done
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}
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@ -44,16 +45,22 @@ svc() {
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#cat >/dev/null << EOF
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## Respawn
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respawn() {
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declare jobs job_pid
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respawn::cleanup() {
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kill -n 15 $(jobs -p)
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wait
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jobs=( $(jobs -p) )
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if [[ "$jobs" ]]; then
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kill -n 15 "${jobs[@]}"
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wait "${jobs[@]}"
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fi
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exit 0
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}; trap 'respawn::cleanup' TERM
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while true; do
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exec "$@" &
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job_pid=$!
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wait
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exec "$@" & job_pid=$!
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wait "$job_pid"
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done
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}
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#EOF
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@ -159,15 +166,19 @@ super_start() {
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svc_pid=$!
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printf '%s' "$svc_pid" > "$svc_pidfile"
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else
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"${service_command[@]}" &
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fi
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if timer "$service_ready_timeout" ready; then
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printf '1' > "$service_ready_flag"
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else
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return 5
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fi
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elif (( service_oneshot )); then
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"${service_command[@]}"; res=$?
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(( $res )) && return "$res"
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printf '1' > "$service_enabled_flag"
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else
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exec "${service_command[@]}" &
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fi
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return 0
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}
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@ -182,19 +193,31 @@ super_oneshot() {
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super_reload() {
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(( service_running )) || return 3
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if (( service_managed )); then
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kill -n 1 "$service_pid"
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else
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kill -n "$service_reload_signal" "$service_pid"
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fi
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}
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## Stop the service
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## Returns:
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## 3: Service is not running.
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super_stop() {
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if (( service_oneshot )); then
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(( service_enabled )) || return 3
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rm -f "$service_enabled_flag"
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return 0
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else
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(( service_running )) || return 3
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nullexec kill -n "$service_stop_signal" "$service_pid" || return 1
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pid_wait "$service_pid" || return 5
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return 0
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fi
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}
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# Overloadable functions
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@ -211,6 +234,7 @@ logs() { cat "$service_logfile"; }
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## Status is a bit of a special case. It's talkative.
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status() {
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(( service_running )) && return 0
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(( service_enabled )) && return 0
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return 1
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}
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@ -266,6 +290,7 @@ main() {
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# Legacy
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[[ "$service_args" ]] && service_command=( "${service_command[@]}" "${service_args[@]}" )
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[[ "$service_respawn" == 'true' ]] && service_respawn=1
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[[ "$service_type" == 'oneshot' ]] && { service_oneshot=1; service_managed=0; }
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[[ "$service_pidfile" ]] && service_managed=0
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@ -281,6 +306,7 @@ main() {
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default service_stop_signal 15
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default service_reload_signal 1
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default service_ready_flag "$rundir/$service_name.ready"
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default service_enabled_flag "$rundir/$service_name.enabled"
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# Let's see if there's a PID
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if [[ -f "$service_pidfile" ]]; then
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@ -292,6 +318,12 @@ main() {
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fi
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fi
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# Maybe the service is enabled?
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if [[ -f "$service_enabled_flag" ]]; then
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# Yay, it is!
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service_enabled=1
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fi
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# Check if action is even defined
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is_function "$2" || die 17 "Function $2 is not defined for $service_name."
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@ -348,8 +380,20 @@ main() {
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status; res=$?
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case "$res" in
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0) printf '%s is running/enabled.\n' "$service_name";;
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1) printf '%s is not running/enabled.\n' "$service_name";;
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0)
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if (( service_oneshot )); then
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printf '%s is enabled.\n' "$service_name"
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else
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printf '%s is running.\n' "$service_name"
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fi;;
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1)
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if (( service_oneshot )); then
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printf '%s is not enabled.\n' "$service_name"
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else
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printf '%s is not running.\n' "$service_name"
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fi;;
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*) printf '%s: status unknown.\n' "$service_name";;
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esac
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;;
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