Control: tags -1 patch
Andrew and Lorenzo,
Thanks for this.
Attached is an initial implementation. I decided hooking into init-d-script at
the correct place was better and it sitll leaves the do_*_override functions for
the sysadmin, if they require.
Mark
#!/bin/sh
# See init-d-script(5) for instructions on how to use this library.
#=============================================================================
# Shift arguments early to fix #826214
__init_d_script_name="$1"
shift
# Define LSB log_* functions.
# Depend on sysvinit-utils (>= 3.05-1) to ensure that this file is present
# and status_of_proc is working.
. /lib/lsb/init-functions
# PATH should only include /usr/* if it runs after the mountnfs.sh
# script. Scripts running before mountnfs.sh should remove the /usr/*
# entries.
PATH=/usr/sbin:/usr/bin:/sbin:/bin
export PATH
is_call_implemented() {
PATH= command -V $1 >/dev/null 2>&1
}
do_usage() {
if is_call_implemented do_reload; then
echo "Usage: $SCRIPTNAME
{start|stop|status|reload|restart|try-restart|force-reload}" >&2
else
echo "Usage: $SCRIPTNAME
{start|stop|status|restart|try-restart|force-reload}" >&2
fi
}
call() {
cmd="$1"
shift
if is_call_implemented ${cmd}_override; then
${cmd}_override "$@"
else
${cmd} "$@"
fi
}
#
# Support for oneshot services
#
oneshot() {
[ "$TYPE" = oneshot ] || return
IDS_RUNDIR=/run/init-d-script
case $1 in
setup) mkdir -p "$IDS_RUNDIR" ;;
start-pre) [ -f /$IDS_RUNDIR/$NAME.oneshot ] && exit ;;
start-post) touch /$IDS_RUNDIR/$NAME.oneshot ;;
stop-pre) [ -f /$IDS_RUNDIR/$NAME.oneshot ] || exit ;;
stop-post) rm -f /$IDS_RUNDIR/$NAME.oneshot ;;
status)
if [ -f /$IDS_RUNDIR/$NAME.oneshot ]; then
log_success_msg "$NAME (oneshot) has been run"
else
log_failure_msg "$NAME (oneshot) has not been
run"
fi
;;
*) echo "ERROR: invalid oneshot request: $1" >&2 ;;
esac
}
#
# Function that starts the daemon/service
#
do_start_cmd() {
if [ "$SETPRIV_ARGS" ]; then
if ! PATH=/bin:/usr/bin command -v setpriv >/dev/null 2>&1; then
echo "WARNING: setpriv not available, ignoring
SETPRIV_ARGS" >&2
unset SETPRIV_ARGS
fi
fi
${SETPRIV_ARGS:+setpriv $SETPRIV_ARGS} start-stop-daemon --start
--quiet \
${PIDFILE:+--pidfile "$PIDFILE"} \
${COMMAND_NAME:+--name "$COMMAND_NAME"} \
${DAEMON:+--exec "$DAEMON"} $START_ARGS -- $DAEMON_ARGS
}
do_start() {
oneshot start-pre
if is_call_implemented do_start_prepare; then
call do_start_prepare
fi
log_daemon_msg "Starting $DESC" "$NAME"
call do_start_cmd
retval=$?
if [ "$retval" = 0 ]; then
oneshot start-post
fi
if [ "$retval" = 1 ] && [ no != "$VERBOSE" ]; then
log_progress_msg "is already running"
fi
retval=$((retval > 1))
vlog_end_msg $retval
if is_call_implemented do_start_cleanup; then
call do_start_cleanup
fi
return $retval
}
#
# Function that stops the daemon/service
#
do_stop_cmd() {
start-stop-daemon --stop --quiet \
--retry=CONT/0/TERM/30/KILL/5 \
${PIDFILE:+--pidfile "$PIDFILE"} \
${COMMAND_NAME:+--name "$COMMAND_NAME"} \
${DAEMON:+--exec "$DAEMON"} $STOP_ARGS
RETVAL="$?"
[ "$RETVAL" = 2 ] && return 2
# Wait for children to finish too if this is a daemon that forks
# and if the daemon is only ever run from this initscript.
# If the above conditions are not satisfied then add some other code
# that waits for the process to drop all resources that could be
# needed by services started subsequently. A last resort is to
# sleep for some time.
if [ -n "$DAEMON" ]; then
start-stop-daemon --stop --quiet --oknodo \
--retry=0/30/KILL/5 --exec "$DAEMON" $STOP_ARGS
[ "$?" = 2 ] && return 2
fi
# Many daemons don't delete their pidfiles when they exit.
rm -f $PIDFILE
return $RETVAL
}
do_stop() {
oneshot stop-pre
if is_call_implemented do_stop_prepare; then
call do_stop_prepare
fi
vlog_daemon_msg "Stopping $DESC" "$NAME"
call do_stop_cmd
retval=$?
# Oneshot stop is unconditional
oneshot stop-post
if [ "$retval" = 1 ] && [ no != "$VERBOSE" ] &&
[ "$TYPE" != oneshot ]; then
log_progress_msg "is not running"
fi
retval=$((retval > 1))
vlog_end_msg $retval
if is_call_implemented do_stop_cleanup; then
call do_stop_cleanup
fi
return $retval
}
do_restart() {
if is_call_implemented do_restart_prepare; then
call do_restart_prepare
fi
vlog_daemon_msg "Restarting $DESC" "$NAME"
call do_stop_cmd
retval=$(($? > 1))
if [ $retval -eq 0 ]; then
call do_start_cmd
retval=$(($? > 1))
fi
vlog_end_msg $retval
if is_call_implemented do_restart_cleanup; then
call do_restart_cleanup
fi
return $retval
}
# Wrapper for do_reload_cmd
do_reload_wrapper() {
if is_call_implemented do_reload_prepare; then
call do_reload_prepare
fi
vlog_daemon_msg "Reloading $DESC configuration files" "$NAME"
call do_reload_cmd
retval=$(($? != 0))
vlog_end_msg $retval
if is_call_implemented do_reload_cleanup; then
call do_reload_cleanup
fi
return $retval
}
# To enable this function, RELOAD_SIGNAL should be set to the kill signal
do_reload_signal() {
start-stop-daemon --stop --signal $RELOAD_SIGNAL --quiet \
${PIDFILE:+--pidfile "$PIDFILE"} \
${COMMAND_NAME:+--name "$COMMAND_NAME"} \
${DAEMON:+--exec "$DAEMON"} $RELOAD_ARGS
}
# Deprecated: use RELOAD_SIGNAL instead for newer scripts
# Enable this using
# alias do_reload=do_reload_sigusr1
do_reload_sigusr1() {
RELOAD_SIGNAL=1
do_reload_cmd() { do_reload_signal; }
do_reload_wrapper
}
do_status() {
if [ "$TYPE" = oneshot ]; then
oneshot status
else
status_of_proc ${PIDFILE:+-p "$PIDFILE"} "${DAEMON:-none}"
"$NAME"
fi
}
if [ "$DEBUG" = "true" ]; then
set -x
fi
# Unset configuration variables to make sure that if variable is not assigned a
# value in init script, it does not use one from environment. See #822918.
unset DAEMON DAEMON_ARGS DESC NAME COMMAND_NAME PIDFILE \
RELOAD_ARGS RELOAD_SIGNAL START_ARGS STOP_ARGS SETPRIV_ARGS TYPE
SCRIPTNAME="$__init_d_script_name"
scriptbasename=${__init_d_script_name##*/}
if [ "$scriptbasename" != "init-d-script" ]; then
. "$__init_d_script_name"
else
exit 0
fi
: ${NAME:=${DAEMON##*/}}
: ${DESC:=$NAME}
: ${COMMAND_NAME:=${NAME}}
# Do not use pid file if $PIDFILE is 'none'. Otherwise, generate from
# $NAME or use the value provided by the init.d script.
if [ none = "$PIDFILE" ]; then
PIDFILE=
elif [ -z "$PIDFILE" ]; then
PIDFILE=/var/run/$NAME.pid
fi
# Read configuration variable file if it is present
[ -r "/etc/default/${NAME}" ] && . "/etc/default/${NAME}"
# Exit if the package is not installed
if [ none != "$DAEMON" ] && [ ! -x "$DAEMON" ]; then
exit 0
fi
# Setup oneshot handling, if required
oneshot setup
# Do not use DAEMON or COMMAND_NAME if they are set to 'none'.
[ none = "$DAEMON" ] && DAEMON=
[ none = "$COMMAND_NAME" ] && COMMAND_NAME=
# Load the VERBOSE setting and other rcS variables
. /lib/init/vars.sh
if [ -t 0 ]; then # Be verbose when called from a terminal
VERBOSE=yes
fi
# Setup do_reload if not already defined
if ! is_call_implemented do_reload; then
if ! is_call_implemented do_reload_cmd && [ -n "$RELOAD_SIGNAL" ]; then
do_reload_cmd() { do_reload_signal; }
fi
if is_call_implemented do_reload_cmd; then
alias do_reload=do_reload_wrapper
fi
fi
case "$1" in
start)
call do_start
;;
stop)
call do_stop
;;
status)
call do_status
;;
reload)
if is_call_implemented do_reload; then
do_reload
else
call do_usage
exit 3
fi
;;
force-reload)
if is_call_implemented do_force_reload; then
call do_force_reload
elif is_call_implemented do_reload; then
do_reload
else
call do_restart
fi
;;
restart)
call do_restart
;;
try-restart)
vlog_daemon_msg "Trying to restart $DESC" "$NAME"
if (call do_status) >/dev/null; then
(call do_restart) >/dev/null
else
[ no != "$VERBOSE" ] && log_progress_msg "is not
running"
true
fi
vlog_end_msg $?
;;
'')
call do_usage
exit 3
;;
*)
if is_call_implemented do_unknown; then
call do_unknown "$1"
exit 3
else
call do_usage
exit 3
fi
;;
esac
exit $? # See https://bugs.debian.org/822753#53
