108 lines
2.9 KiB
Bash
108 lines
2.9 KiB
Bash
# start / stop / status functions for supervise-daemon
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# Copyright (c) 2016 The OpenRC Authors.
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# See the Authors file at the top-level directory of this distribution and
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# https://github.com/OpenRC/openrc/blob/master/AUTHORS
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#
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# This file is part of OpenRC. It is subject to the license terms in
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# the LICENSE file found in the top-level directory of this
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# distribution and at https://github.com/OpenRC/openrc/blob/master/LICENSE
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# This file may not be copied, modified, propagated, or distributed
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# except according to the terms contained in the LICENSE file.
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supervise_start()
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{
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if [ -z "$command" ]; then
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ewarn "The command variable is undefined."
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ewarn "There is nothing for ${name:-$RC_SVCNAME} to start."
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return 1
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fi
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ebegin "Starting ${name:-$RC_SVCNAME}"
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# The eval call is necessary for cases like:
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# command_args="this \"is a\" test"
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# to work properly.
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eval supervise-daemon --start \
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${retry:+--retry} $retry \
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${chroot:+--chroot} $chroot \
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${pidfile:+--pidfile} $pidfile \
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${respawn_delay:+--respawn-delay} $respawn_delay \
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${respawn_max:+--respawn-max} $respawn_max \
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${respawn_period:+--respawn-period} $respawn_period \
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${command_user+--user} $command_user \
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$supervise_daemon_args \
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$command \
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-- $command_args $command_args_foreground
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rc=$?
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if [ $rc = 0 ]; then
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[ -n "${chroot}" ] && service_set_value "chroot" "${chroot}"
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[ -n "${pidfile}" ] && service_set_value "pidfile" "${pidfile}"
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fi
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eend $rc "failed to start ${name:-$RC_SVCNAME}"
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}
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supervise_stop()
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{
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local startchroot="$(service_get_value "chroot")"
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local startpidfile="$(service_get_value "pidfile")"
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chroot="${startchroot:-$chroot}"
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pidfile="${startpidfile:-$pidfile}"
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[ -n "$pidfile" ] || return 0
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ebegin "Stopping ${name:-$RC_SVCNAME}"
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supervise-daemon --stop \
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${pidfile:+--pidfile} $chroot$pidfile \
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${stopsig:+--signal} $stopsig
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eend $? "Failed to stop ${name:-$RC_SVCNAME}"
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}
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_check_supervised()
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{
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[ "$RC_UNAME" != Linux ] && return 0
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local child_pid="$(service_get_value "child_pid")"
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local pid="$(cat ${pidfile})"
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if [ -n "${child_pid}" ]; then
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if ! [ -e "/proc/${pid}" ] && [ -e "/proc/${child_pid}" ]; then
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if [ -e "/proc/self/ns/pid" ] && [ -e "/proc/${child_pid}/ns/pid" ]; then
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local n1 n2
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n1=$(readlink "/proc/self/ns/pid")
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n2=$(readlink "/proc/${child_pid}/ns/pid")
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if [ "${n1}" = "${n2}" ]; then
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return 1
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fi
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else
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return 1
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fi
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fi
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fi
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return 0
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}
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supervise_status()
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{
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if service_stopping; then
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ewarn "status: stopping"
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return 4
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elif service_starting; then
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ewarn "status: starting"
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return 8
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elif service_inactive; then
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ewarn "status: inactive"
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return 16
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elif service_started; then
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if service_crashed; then
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if ! _check_supervised; then
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eerror "status: unsupervised"
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return 64
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fi
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eerror "status: crashed"
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return 32
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fi
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einfo "status: started"
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return 0
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else
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einfo "status: stopped"
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return 3
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fi
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}
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