f27d60add9
Supervisor setups break easily when start/stop/status functions are not
default.
Applications that write multiple PIDs to a pidfile (eg HAProxy as
described in bug 601540), can also benefit from being able to call the
default start/stop/status with modified environment variables.
Expose the default start/stop/status functions as
default_start/stop/status, and use them for the defaults
start/stop/status.
Trivial usage example:
```
stop()
{
t=$(mktemp)
for pid in $(cat $pidfile) ; do
echo $pid >$t
pidfile=$t default_stop
done
rm -f $t
}
```
X-Gentoo-Bug: 601540
X-Gentoo-Bug-URL: https://bugs.gentoo.org/601540
Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>
390 lines
8.6 KiB
Bash
390 lines
8.6 KiB
Bash
#!@SHELL@
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# Shell wrapper for openrc-run
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# Copyright (c) 2007-2015 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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verify_boot()
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{
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if [ ! -e ${RC_SVCDIR}/softlevel ]; then
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eerror "You are attempting to run an openrc service on a"
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eerror "system which openrc did not boot."
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eerror "You may be inside a chroot or you may have used"
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eerror "another initialization system to boot this system."
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eerror "In this situation, you will get unpredictable results!"
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eerror
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eerror "If you really want to do this, issue the following command:"
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eerror "touch ${RC_SVCDIR}/softlevel"
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exit 1
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fi
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return 0
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}
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sourcex()
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{
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if [ "$1" = "-e" ]; then
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shift
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[ -e "$1" ] || return 1
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fi
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if ! . "$1"; then
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eerror "$RC_SVCNAME: error loading $1"
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exit 1
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fi
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}
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sourcex "@LIBEXECDIR@/sh/functions.sh"
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sourcex "@LIBEXECDIR@/sh/rc-functions.sh"
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case $RC_SYS in
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PREFIX|SYSTEMD-NSPAWN) ;;
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*) sourcex -e "@LIBEXECDIR@/sh/rc-cgroup.sh";;
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esac
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# Support LiveCD foo
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if sourcex -e "/sbin/livecd-functions.sh"; then
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livecd_read_commandline
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fi
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if [ -z "$1" -o -z "$2" ]; then
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eerror "$RC_SVCNAME: not enough arguments"
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exit 1
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fi
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# So daemons know where to recall us if needed
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RC_SERVICE="$1" ; export RC_SERVICE
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shift
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# Compat
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SVCNAME=$RC_SVCNAME ; export SVCNAME
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# Dependency function
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config() {
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[ -n "$*" ] && echo "config $*"
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}
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need() {
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[ -n "$*" ] && echo "need $*"
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}
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use() {
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[ -n "$*" ] && echo "use $*"
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}
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want() {
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[ -n "$*" ] && echo "want $*"
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}
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before() {
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[ -n "$*" ] && echo "before $*"
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}
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after() {
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[ -n "$*" ] && echo "after $*"
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}
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provide() {
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[ -n "$*" ] && echo "provide $*"
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}
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keyword() {
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local c x
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set -- $*
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while [ -n "$*" ]; do
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case "$1" in
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-containers) x="$(_get_containers)" ;;
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!-containers) x="$(_get_containers_remove)" ;;
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*) x=$1 ;;
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esac
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c="${c}${x} "
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shift
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done
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[ -n "$c" ] && echo "keyword $c"
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}
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# Describe the init script to the user
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describe()
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{
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if [ -n "$description" ]; then
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einfo "$description"
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else
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ewarn "No description for $RC_SVCNAME"
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fi
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local svc= desc=
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for svc in ${extra_commands:-$opts} $extra_started_commands \
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$extra_stopped_commands; do
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eval desc=\$description_$svc
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if [ -n "$desc" ]; then
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einfo "$HILITE$svc$NORMAL: $desc"
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else
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ewarn "$HILITE$svc$NORMAL: no description"
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fi
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done
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}
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# Report status
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_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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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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# These functions select the appropriate function to call from the
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# supervisor modules
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default_start()
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{
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local func=ssd_start
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case "$supervisor" in
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runit) func=runit_start ;;
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s6) func=s6_start ;;
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supervise-daemon) func=supervise_start ;;
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?*)
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ewarn "Invalid supervisor, \"$supervisor\", using start-stop-daemon"
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;;
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esac
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$func
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}
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default_stop()
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{
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local func=ssd_stop
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case "$supervisor" in
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runit) func=runit_stop ;;
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s6) func=s6_stop ;;
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supervise-daemon) func=supervise_stop ;;
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?*)
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ewarn "Invalid supervisor, \"$supervisor\", using start-stop-daemon"
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;;
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esac
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$func
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}
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default_status()
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{
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local func=ssd_status
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case "$supervisor" in
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runit) func=runit_status ;;
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s6) func=s6_status ;;
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supervise-daemon) func=supervise_status ;;
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?*)
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ewarn "Invalid supervisor, \"$supervisor\", using start-stop-daemon"
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;;
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esac
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$func
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}
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# Template start / stop / status functions
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# package init scripts may override these, but the bodies are as minimal as
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# possible, so that the init scripts can creatively wrap default_*
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# functions.
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start()
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{
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default_start
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}
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stop()
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{
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default_stop
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}
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status()
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{
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default_status
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}
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# Start debug output
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yesno $RC_DEBUG && set -x
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# Load configuration settings. First the global ones, then any
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# service-specific settings.
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sourcex -e "@SYSCONFDIR@/rc.conf"
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if [ -d "@SYSCONFDIR@/rc.conf.d" ]; then
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for _f in "@SYSCONFDIR@"/rc.conf.d/*.conf; do
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sourcex -e "$_f"
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done
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fi
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_conf_d=${RC_SERVICE%/*}/../conf.d
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# If we're net.eth0 or openvpn.work then load net or openvpn config
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_c=${RC_SVCNAME%%.*}
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if [ -n "$_c" -a "$_c" != "$RC_SVCNAME" ]; then
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if ! sourcex -e "$_conf_d/$_c.$RC_RUNLEVEL"; then
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sourcex -e "$_conf_d/$_c"
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fi
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fi
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unset _c
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# Overlay with our specific config
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if ! sourcex -e "$_conf_d/$RC_SVCNAME.$RC_RUNLEVEL"; then
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sourcex -e "$_conf_d/$RC_SVCNAME"
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fi
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unset _conf_d
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# load service supervisor functions
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sourcex "@LIBEXECDIR@/sh/runit.sh"
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sourcex "@LIBEXECDIR@/sh/s6.sh"
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sourcex "@LIBEXECDIR@/sh/start-stop-daemon.sh"
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sourcex "@LIBEXECDIR@/sh/supervise-daemon.sh"
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# Set verbose mode
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if yesno "${rc_verbose:-$RC_VERBOSE}"; then
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EINFO_VERBOSE=yes
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export EINFO_VERBOSE
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fi
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for _cmd; do
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if [ "$_cmd" != status -a "$_cmd" != describe ]; then
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# Apply any ulimit defined
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[ -n "${rc_ulimit:-$RC_ULIMIT}" ] && \
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ulimit ${rc_ulimit:-$RC_ULIMIT}
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# Apply cgroups settings if defined
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if [ "$(command -v cgroup_add_service)" = \
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"cgroup_add_service" ]
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then
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if [ -d /sys/fs/cgroup -a ! -w /sys/fs/cgroup ]; then
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eerror "No permission to apply cgroup settings"
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break
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fi
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cgroup_add_service /sys/fs/cgroup/openrc
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cgroup_add_service /sys/fs/cgroup/systemd/system
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fi
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[ "$(command -v cgroup_set_limits)" = \
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"cgroup_set_limits" ] && \
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cgroup_set_limits
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break
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fi
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done
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# Load our script
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sourcex "$RC_SERVICE"
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eval "printf '%s\n' $required_dirs" | while read _d; do
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if [ -n "$_d" ] && [ ! -d "$_d" ]; then
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eerror "$RC_SVCNAME: \`$_d' is not a directory"
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exit 1
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fi
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done
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[ $? -ne 0 ] && exit 1
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unset _d
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eval "printf '%s\n' $required_files" | while read _f; do
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if [ -n "$_f" ] && [ ! -r "$_f" ]; then
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eerror "$RC_SVCNAME: \`$_f' is not readable"
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exit 1
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fi
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done
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[ $? -ne 0 ] && exit 1
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unset _f
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if [ -n "$opts" ]; then
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ewarn "Use of the opts variable is deprecated and will be"
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ewarn "removed in the future."
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ewarn "Please use extra_commands, extra_started_commands or extra_stopped_commands."
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fi
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while [ -n "$1" ]; do
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# Special case depend
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if [ "$1" = depend ]; then
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shift
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# Enter the dir of the init script to fix the globbing
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# bug 412677
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cd ${RC_SERVICE%/*}
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_depend
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cd /
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continue
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fi
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# See if we have the required function and run it
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for _cmd in describe start stop status ${extra_commands:-$opts} \
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$extra_started_commands $extra_stopped_commands
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do
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if [ "$_cmd" = "$1" ]; then
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if [ "$(command -v "$1")" = "$1" ]; then
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# If we're in the background, we may wish to
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# fake some commands. We do this so we can
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# "start" ourselves from inactive which then
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# triggers other services to start which
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# depend on us.
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# A good example of this is openvpn.
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if yesno $IN_BACKGROUND; then
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for _cmd in $in_background_fake; do
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if [ "$_cmd" = "$1" ]; then
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shift
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continue 3
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fi
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done
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fi
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# Check to see if we need to be started before
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# we can run this command
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for _cmd in $extra_started_commands; do
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if [ "$_cmd" = "$1" ]; then
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if verify_boot && ! service_started; then
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eerror "$RC_SVCNAME: cannot \`$1' as it has not been started"
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exit 1
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fi
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fi
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done
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# Check to see if we need to be stopped before
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# we can run this command
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for _cmd in $extra_stopped_commands; do
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if [ "$_cmd" = "$1" ]; then
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if verify_boot && ! service_stopped; then
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eerror "$RC_SVCNAME: cannot \`$1' as it has not been stopped"
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exit 1
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fi
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fi
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done
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unset _cmd
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case $1 in
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start|stop|status) verify_boot;;
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esac
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if [ "$(command -v "$1_pre")" = "$1_pre" ]
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then
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"$1"_pre || exit $?
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fi
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"$1" || exit $?
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if [ "$(command -v "$1_post")" = "$1_post" ]
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then
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"$1"_post || exit $?
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fi
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[ "$(command -v cgroup_cleanup)" = "cgroup_cleanup" -a \
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"$1" = "stop" ] && \
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yesno "${rc_cgroup_cleanup}" && \
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cgroup_cleanup
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shift
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continue 2
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else
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if [ "$_cmd" = "start" -o "$_cmd" = "stop" ]
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then
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shift
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continue 2
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else
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eerror "$RC_SVCNAME: function \`$1' defined but does not exist"
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exit 1
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fi
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fi
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fi
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done
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eerror "$RC_SVCNAME: unknown function \`$1'"
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exit 1
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done
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exit 0
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