| 1 | # |
| 2 | # service: simple wrapper around start-stop-daemon |
| 3 | # |
| 4 | # Usage: service ACTION EXEC ARGS... |
| 5 | # |
| 6 | # Action: |
| 7 | # -C check if EXEC is alive |
| 8 | # -S start EXEC, passing it ARGS as its arguments |
| 9 | # -K kill EXEC, sending it a TERM signal if not specified otherwise |
| 10 | # |
| 11 | # Environment variables exposed: |
| 12 | # SERVICE_DAEMONIZE run EXEC in background |
| 13 | # SERVICE_WRITE_PID create a pid-file and use it for matching |
| 14 | # SERVICE_MATCH_EXEC use EXEC command-line for matching (default) |
| 15 | # SERVICE_MATCH_NAME use EXEC process name for matching |
| 16 | # SERVICE_USE_PID assume EXEC create its own pid-file and use it for matching |
| 17 | # SERVICE_NAME process name to use (default to EXEC file part) |
| 18 | # SERVICE_PID_FILE pid file to use (default to /var/run/$SERVICE_NAME.pid) |
| 19 | # SERVICE_SIG signal to send when using -K |
| 20 | # SERVICE_SIG_RELOAD default signal used when reloading |
| 21 | # SERVICE_SIG_STOP default signal used when stopping |
| 22 | # SERVICE_STOP_TIME time to wait for a process to stop gracefully before killing it |
| 23 | # SERVICE_UID user EXEC should be run as |
| 24 | # SERVICE_GID group EXEC should be run as |
| 25 | # |
| 26 | # SERVICE_DEBUG don't do anything, but show what would be done |
| 27 | # SERVICE_QUIET don't print anything |
| 28 | # |
| 29 | |
| 30 | SERVICE_QUIET=1 |
| 31 | SERVICE_SIG_RELOAD="HUP" |
| 32 | SERVICE_SIG_STOP="TERM" |
| 33 | SERVICE_STOP_TIME=5 |
| 34 | SERVICE_MATCH_EXEC=1 |
| 35 | |
| 36 | service() { |
| 37 | local ssd |
| 38 | local exec |
| 39 | local name |
| 40 | local start |
| 41 | ssd="${SERVICE_DEBUG:+echo }start-stop-daemon${SERVICE_QUIET:+ -q}" |
| 42 | case "$1" in |
| 43 | -C) |
| 44 | ssd="$ssd -K -t" |
| 45 | ;; |
| 46 | -S) |
| 47 | ssd="$ssd -S${SERVICE_DAEMONIZE:+ -b}${SERVICE_WRITE_PID:+ -m}" |
| 48 | start=1 |
| 49 | ;; |
| 50 | -K) |
| 51 | ssd="$ssd -K${SERVICE_SIG:+ -s $SERVICE_SIG}" |
| 52 | ;; |
| 53 | *) |
| 54 | echo "service: unknown ACTION '$1'" 1>&2 |
| 55 | return 1 |
| 56 | esac |
| 57 | shift |
| 58 | exec="$1" |
| 59 | [ -n "$exec" ] || { |
| 60 | echo "service: missing argument" 1>&2 |
| 61 | return 1 |
| 62 | } |
| 63 | [ -x "$exec" ] || { |
| 64 | echo "service: file '$exec' is not executable" 1>&2 |
| 65 | return 1 |
| 66 | } |
| 67 | name="${SERVICE_NAME:-${exec##*/}}" |
| 68 | [ -z "$SERVICE_USE_PID$SERVICE_WRITE_PID$SERVICE_PID_FILE" ] \ |
| 69 | || ssd="$ssd -p ${SERVICE_PID_FILE:-/var/run/$name.pid}" |
| 70 | [ -z "$SERVICE_MATCH_NAME" ] || ssd="$ssd -n $name" |
| 71 | ssd="$ssd${SERVICE_UID:+ -c $SERVICE_UID${SERVICE_GID:+:$SERVICE_GID}}" |
| 72 | [ -z "$SERVICE_MATCH_EXEC$start" ] || ssd="$ssd -x $exec" |
| 73 | shift |
| 74 | $ssd${1:+ -- "$@"} |
| 75 | } |
| 76 | |
| 77 | service_check() { |
| 78 | service -C "$@" |
| 79 | } |
| 80 | |
| 81 | service_signal() { |
| 82 | SERVICE_SIG="${SERVICE_SIG:-USR1}" service -K "$@" |
| 83 | } |
| 84 | |
| 85 | service_start() { |
| 86 | service -S "$@" |
| 87 | } |
| 88 | |
| 89 | service_stop() { |
| 90 | local try |
| 91 | SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_STOP}" service -K "$@" || return 1 |
| 92 | while [ $((try++)) -lt $SERVICE_STOP_TIME ]; do |
| 93 | service -C "$@" || return 0 |
| 94 | sleep 1 |
| 95 | done |
| 96 | SERVICE_SIG="KILL" service -K "$@" |
| 97 | sleep 1 |
| 98 | ! service -C "$@" |
| 99 | } |
| 100 | |
| 101 | service_reload() { |
| 102 | SERVICE_SIG="${SERVICE_SIG:-$SERVICE_SIG_RELOAD}" service -K "$@" |
| 103 | } |
| 104 | |
| 105 | service_kill() { |
| 106 | cat 1>&2 << __END_OF_WARNING__ |
| 107 | # |
| 108 | # WARNING: the 'service_kill' function is now deprecated and might be |
| 109 | # removed soon. Consider using the other new service_* wrappers instead. |
| 110 | # |
| 111 | __END_OF_WARNING__ |
| 112 | local name="${1}" |
| 113 | local pid="${2:-$(pidof "$name")}" |
| 114 | local grace="${3:-5}" |
| 115 | |
| 116 | [ -f "$pid" ] && pid="$(head -n1 "$pid" 2>/dev/null)" |
| 117 | |
| 118 | for pid in $pid; do |
| 119 | [ -d "/proc/$pid" ] || continue |
| 120 | local try=0 |
| 121 | kill -TERM $pid 2>/dev/null && \ |
| 122 | while grep -qs "$name" "/proc/$pid/cmdline" && [ $((try++)) -lt $grace ]; do sleep 1; done |
| 123 | kill -KILL $pid 2>/dev/null && \ |
| 124 | while grep -qs "$name" "/proc/$pid/cmdline"; do sleep 1; done |
| 125 | done |
| 126 | } |
| 127 | |
| 128 | |
| 129 | |
| 130 | |
