/usr/share/doc/runit/examples/start-stop-daemon.runit is in runit 2.1.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 | #!/bin/zsh
#
# This script is intended to wrap start-stop-daemon. It will call the
# original start-stop-daemon with the supplied arguments unless the daemon
# to be started appears to exist as a runit service, in which case it will
# map the start-stop-daemon call to an sv(8) call.
#
#
# From: Andras Korn <korn-debbugs@elan.rulez.org>
# To: Debian Bug Tracking System <submit@bugs.debian.org>
# Subject: Please consider including attached start-stop-daemon.runit script
# Date: Mon, 25 Jun 2012 16:46:55 +0200
#
# Hi,
#
# Since the release of 2.88dsf-23 of sysv-rc, dependency based boot ordering
# is mandatory in Debian; however, insserv fails to recognise symlinks to
# /usr/bin/sv as valid initscripts.
#
# This makes using runit unnecessarily painful; to ease the pain, I wrote a
# pretty complete start-stop-daemon wrapper for runit (alas, in zsh).
#
# Diverting /sbin/start-stop-daemon to /sbin/start-stop-daemon.real and using
# this script, conventional initscripts continue to "work". My script
# determines whether it should pass the call through to the real
# start-stop-daemon or to use sv(8) to manage a runit service.
#
# While it's a bit of a kludge, it appears to work fairly well.
#
# An important drawback is that it needs to be adapted each time the semantics
# of start-stop-daemon change, but maybe that doesn't happen so often.
#
# The script uses few zsh-specific features; a determined person should be
# able to modify it to run in bash or even plain sh relatively easily (but I
# have no time/interest to do so myself).
#
# The script is licensed under the GPL v3, with the special exception that
# permission is granted to include it in the runit package and license it to
# users of the runit package under the same license as the rest of the
# package.
#
# Work on the script was sponsored by CAE Engineering Kft.
#
# Best regards,
#
# Andras
# If called by non-root user, fall back to original start-stop-daemon
# unconditionally
[[ $UID -gt 0 ]] && exec /sbin/start-stop-daemon.real $@
set -A args $@
SVDIR=${SVDIR:-/etc/service}
unset mode signal exec timeout startas testmode oknodo quiet verbose command svstat
oknodo=0
quiet=0
while [[ -n "$1" ]]; do
case "$1" in
-S|--start)
mode=start
;;
-K|--stop)
mode=stop
;;
-T|--status)
mode=status
;;
-H|--help|-V|--version)
exec /sbin/start-stop-daemon.real $args
;;
-x|--exec)
shift
exec="$1"
;;
-s|--signal)
shift
signal=$1
;;
--signal=*)
signal="${1/--signal=/}"
;;
-R|--retry)
shift
timeout="$1"
;;
--retry=*)
timeout="${1/--retry=/}"
;;
-a|--startas)
shift
startas="$1"
;;
-t|--test)
testmode=1
;;
-o|--oknodo)
oknodo=1
;;
-q|--quiet)
quiet=1
exec >/dev/null
;;
-v|--verbose)
verbose=1
;;
-p|--pidfile|-n|--name|-u|--user|-g|--group|-r|--chroot|-d|--chdir|-N|--nicelevel|-P|--procsched|-I|--iosched|-k|--umask|-m|--make-pidfile)
# ignored
shift
;;
--pidfile=*|-b|--background|--nicelevel=*|--procsched=*|--iosched=*|--umask=*)
;;
--)
# What follows is args to the daemon. Avoid parsing
# those accidentally.
break
;;
*)
# Assume the previous was the last option; the rest
# is the name of the daemon plus args, of which we
# only care about the daemon.
command=$1
break
;;
esac
shift
done
# returns success if $1 appears to be the name of a runit service
function issvname() {
if [[ -d "$SVDIR/$1/supervise/." ]]; then
return 0
# 'supervise' could still be a symlink to a directory that doesn't exist yet
elif [[ -L $SVDIR/$1/supervise ]] && ! [[ -e $SVDIR/$1/supervise ]]; then
return 0
else
return 1
fi
}
# TODO: decide what to do if the runit service we're supposed to manage
# doesn't exist in the current svdir but does in other "runlevels"
# Try to infer runit service name. If our parent is an initscript, use its
# basename
foundsvname=0
read -A cmdline </proc/$PPID/cmdline
while [[ -n "$cmdline[1]" ]]; do
if [[ "${cmdline[1]:h}" = /etc/init.d ]]; then
svname=${cmdline[1]:t}
break
fi
shift cmdline
done
if [[ -z "$svname" ]] && [[ "${$(readlink -f /proc/$PPID/exe):h}" = /etc/init.d ]]; then
read svname < /proc/$PPID/comm
fi
issvname $svname && foundsvname=1
# if not, try other heuristics
if [[ $foundsvname = 0 ]]; then
svnames=($startas $exec $command)
while [[ -n "$svnames[1]" ]]; do
if issvname ${svnames[1]:t}; then
svname=${svnames[1]:t}
foundsvname=1
break
else
shift svnames
fi
done
fi
# if still not found, call real start-stop-daemon
if [[ "$foundsvname" = 0 ]]; then
exec /sbin/start-stop-daemon.real $args
fi
# otherwise, do what we've been asked to
[[ "$quiet" = "0" ]] && [[ "$verbose" = "1" ]] && echo "start-stop-daemon.runit: will act on $svname service." >&2
function sendsig() {
case "$signal" in
HUP|1)
sv hup $svname
;;
INT|2)
sv interrupt $svname
;;
QUIT|3)
sv quit $svname
;;
KILL|9)
sv d $svname
sv kill $svname
;;
USR1|10)
sv 1 $svname
;;
USR2|12)
sv 2 $svname
;;
ALRM|14)
sv alarm $svname
;;
TERM|15)
sv down $svname
;;
CONT|18)
sv cont $svname
;;
STOP|19)
sv pause $svname
;;
*)
echo "$0: ERROR: don't know how to send $signal signal to $svname." >&2
exit 3
;;
esac
}
function wait_until_exited() {
counter=0
read svstat < $SVDIR/$svname/supervise/stat
while ! [[ "$svstat" = down ]]; do
((counter++))
[[ $counter -gt $timeout ]] && return 1
sleep 1
read svstat < $SVDIR/$svname/supervise/stat
done
return 0
}
function do_stop() {
if [[ $timeout =~ / ]]; then
# handle complex schedule
OLDIFS="$IFS"
IFS=/
echo $timeout | read -A schedule
IFS="$OLDIFS"
while [[ -n "$schedule[1]" ]]; do
signal=$schedule[1]
sendsig
shift schedule
timeout=$schedule[1]
wait_until_exited && exit 0
shift schedule
done
exit 2
else
# simple timeout
if [[ -z "$signal" ]]; then
if [[ $timeout =~ ^[0-9]+$ ]]; then
export SVWAIT=$timeout
fi
if sv stop $svname; then
exit 0
else
exit 1
fi
else
sendsig
[[ -n "$timeout" ]] && if wait_until_exited; then
exit 0
else
exit 1
fi
fi
fi
}
if [[ -r $SVDIR/$svname/supervise/stat ]]; then
read svstat < $SVDIR/$svname/supervise/stat
else
# runsv is not yet up
svstat=none
fi
case "$mode" in
start)
[[ "$svstat" = run ]] && [[ "$oknodo" = "0" ]] && exit 1 # Emulate start-stop-daemon semantics
[[ -z "$testmode" ]] && ! [[ "$svstat" = "none" ]] && sv start $svname
exit 0
;;
stop)
[[ "$svstat" = none ]] && exit 0
[[ "$svstat" = down ]] && [[ "$oknodo" = "1" ]] && exit 1 # Emulate start-stop-daemon semantics
[[ -z "$testmode" ]] && do_stop # handles --retry and --signal, therefore separate function
;;
status)
case "$svstat" in
# States are complex; we only handle the most basic cases here and bail on
# the rest (e.g. "finish" cannot be correctly reported as "running" or "not
# running")
run)
exit 0
;;
down|none)
exit 3
;;
*)
exit 4
;;
esac
;;
esac
exit 0
|