FM / sbin

/snap/core18/2999/usr/sbin

Name	Size	Mode	Actions
aa-remove-unknown	2923	0755	edit dl rm
aa-status	8610	0755	edit dl rm
add-shell	860	0755	edit dl rm
addgroup	37322	0755	edit dl rm
adduser	37322	0755	edit dl rm
apparmor_status	8610	0755	edit dl rm
arpd	55328	0755	edit dl rm
chgpasswd	59216	0755	edit dl rm
chmem	43088	0755	edit dl rm
chpasswd	55152	0755	edit dl rm
chroot	39096	0755	edit dl rm
cpgr	57304	0755	edit dl rm
cppw	57304	0755	edit dl rm
delgroup	16495	0755	edit dl rm
deluser	16495	0755	edit dl rm
e2freefrag	14408	0755	edit dl rm
e4crypt	22600	0755	edit dl rm
e4defrag	26616	0755	edit dl rm
faillock	14328	0755	edit dl rm
fdformat	30800	0755	edit dl rm
filefrag	14352	0755	edit dl rm
genl	59448	0755	edit dl rm
groupadd	63408	0755	edit dl rm
groupdel	72056	0755	edit dl rm
groupmems	59256	0755	edit dl rm
groupmod	69816	0755	edit dl rm
grpck	55096	0755	edit dl rm
grpconv	50872	0755	edit dl rm
grpunconv	50872	0755	edit dl rm
iconvconfig	30976	0755	edit dl rm
invoke-rc.d	16031	0755	edit dl rm
ip6tables-apply	7016	0755	edit dl rm
iptables-apply	7016	0755	edit dl rm
ldattach	30800	0755	edit dl rm
mklost+found	10232	0755	edit dl rm
netplan	798	0755	edit dl rm
newusers	84368	0755	edit dl rm
nfnl_osf	14328	0755	edit dl rm
nologin	6136	0755	edit dl rm
pam-auth-update	19850	0755	edit dl rm
pam_getenv	2890	0755	edit dl rm
pam_timestamp_check	10232	0755	edit dl rm
pwck	50992	0755	edit dl rm
pwconv	46800	0755	edit dl rm
pwunconv	46776	0755	edit dl rm
readprofile	18544	0755	edit dl rm
remove-shell	904	0755	edit dl rm
rfkill	47184	0755	edit dl rm
rmt	59792	0755	edit dl rm
rmt-tar	59792	0755	edit dl rm
rtcwake	43088	0755	edit dl rm
service	9262	0755	edit dl rm
sshd	790952	0755	edit dl rm
tarcat	936	0755	edit dl rm
tzconfig	106	0755	edit dl rm
update-ca-certificates	5394	0755	edit dl rm
update-mime	9053	0755	edit dl rm
update-passwd	31136	0755	edit dl rm
update-rc.d	16508	0755	edit dl rm
useradd	126240	0755	edit dl rm
userdel	84464	0755	edit dl rm
usermod	126016	0755	edit dl rm
vigr	61624	0755	edit dl rm
vipw	61624	0755	edit dl rm
visudo	213816	0755	edit dl rm
zic	55440	0755	edit dl rm

Edit: /snap/core18/2999/usr/sbin/invoke-rc.d (16031B)

#!/bin/sh  
# vim: ft=sh
#
# invoke-rc.d.sysvinit - Executes initscript actions
#
# SysVinit /etc/rc?.d version for Debian's sysvinit package
#
# Copyright (C) 2000,2001 Henrique de Moraes Holschuh <hmh@debian.org>
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 2 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.

# Constants
RUNLEVELHELPER=/sbin/runlevel
POLICYHELPER=/usr/sbin/policy-rc.d
INITDPREFIX=/etc/init.d/
RCDPREFIX=/etc/rc

# Options
BEQUIET=
MODE=
ACTION=
FALLBACK=
NOFALLBACK=
FORCE=
RETRY=
RETURNFAILURE=
RC=
is_systemd=
is_openrc=

# Shell options
set +e

dohelp () {
 # 
 # outputs help and usage
 #
cat <<EOF

invoke-rc.d, Debian/SysVinit (/etc/rc?.d) initscript subsystem.
Copyright (c) 2000,2001 Henrique de Moraes Holschuh <hmh@debian.org>

Usage:
  invoke-rc.d [options] <basename> <action> [extra parameters]

basename - Initscript ID, as per update-rc.d(8)
  action   - Initscript action. Known actions are:
                start, [force-]stop, [try-]restart,
                [force-]reload, status
  WARNING: not all initscripts implement all of the above actions.

extra parameters are passed as is to the initscript, following 
  the action (first initscript parameter).

Options:
  --quiet
     Quiet mode, no error messages are generated.
  --force
     Try to run the initscript regardless of policy and subsystem
     non-fatal errors.
  --try-anyway
     Try to run init script even if a non-fatal error is found.
  --disclose-deny
     Return status code 101 instead of status code 0 if
     initscript action is denied by local policy rules or
     runlevel constrains.
  --query
     Returns one of status codes 100-106, does not run
     the initscript. Implies --disclose-deny and --no-fallback.
  --no-fallback
     Ignores any fallback action requests by the policy layer.
     Warning: this is usually a very *bad* idea for any actions
     other than "start".
  --help
     Outputs help message to stdout

EOF
}

printerror () {
 #
 # prints an error message
 #  $* - error message
 #
if test x${BEQUIET} = x ; then
    echo `basename $0`: "$*" >&2
fi
}

formataction () {
 #
 # formats a list in $* into $printaction
 # for human-friendly printing to stderr
 # and sets $naction to action or actions
 #
printaction=`echo $* | sed 's/ /, /g'`
if test $# -eq 1 ; then
    naction=action
else
    naction=actions
fi
}

querypolicy () {
 #
 # queries policy database
 # returns: $RC = 104 - ok, run
 #          $RC = 101 - ok, do not run
 #        other - exit with status $RC, maybe run if $RETRY
 #          initial status of $RC is taken into account.
 #

policyaction="${ACTION}"
if test x${RC} = "x101" ; then
    if test "${ACTION}" = "start" || test "${ACTION}" = "restart" || test "${ACTION}" = "try-restart"; then
	policyaction="(${ACTION})"
    fi
fi

if test "x${POLICYHELPER}" != x && test -x "${POLICYHELPER}" ; then
    FALLBACK=`${POLICYHELPER} ${BEQUIET} ${INITSCRIPTID} "${policyaction}" ${RL}`
    RC=$?
    formataction ${ACTION}
    case ${RC} in
	0)   RC=104
	     ;;
	1)   RC=105
	     ;;
	101) if test x${FORCE} != x ; then
		printerror Overriding policy-rc.d denied execution of ${printaction}.
		RC=104
	     else
		printerror policy-rc.d denied execution of ${printaction}.
	     fi
	     ;;
    esac
    if test x${MODE} != xquery ; then
      case ${RC} in
	105) printerror policy-rc.d query returned \"behaviour undefined\",
	     printerror assuming \"${printaction}\" is allowed.
	     RC=104
	     ;;
	106) formataction ${FALLBACK}
	     if test x${FORCE} = x ; then
		 if test x${NOFALLBACK} = x ; then
		     ACTION="${FALLBACK}"
		     printerror executing ${naction} \"${printaction}\" instead due to policy-rc.d request.
		     RC=104
		 else
		     printerror ignoring policy-rc.d fallback request: ${printaction}.
		     RC=101
		 fi
	     else
		 printerror ignoring policy-rc.d fallback request: ${printaction}.
		 RC=104
	     fi
	     ;;
      esac
    fi
    case ${RC} in
      100|101|102|103|104|105|106) ;;
      *) printerror WARNING: policy-rc.d returned unexpected error status ${RC}, 102 used instead.
         RC=102
	 ;;
    esac
else
    if test ! -e "/sbin/init" ; then
        if test x${FORCE} != x ; then
            printerror "WARNING: No init system and policy-rc.d missing, but force specified so proceeding."
        else
            printerror "WARNING: No init system and policy-rc.d missing! Defaulting to block."
            RC=101
        fi
    fi

if test x${RC} = x ; then 
	RC=104
    fi
fi
return
}

verifyparameter () {
 #
 # Verifies if $1 is not null, and $# = 1
 #
if test $# -eq 0 ; then
    printerror syntax error: invalid empty parameter
    exit 103
elif test $# -ne 1 ; then
    printerror syntax error: embedded blanks are not allowed in \"$*\"
    exit 103
fi
return
}

##
##  main
##

## Verifies command line arguments

if test $# -eq 0 ; then
  printerror syntax error: missing required parameter, --help assumed
  dohelp
  exit 103
fi

state=I
while test $# -gt 0 && test ${state} != III ; do
    case "$1" in
      --help)   dohelp 
		exit 0
		;;
      --quiet)  BEQUIET=--quiet
		;;
      --force)  FORCE=yes
		RETRY=yes
		;;
      --try-anyway)
	        RETRY=yes
		;;
      --disclose-deny)
		RETURNFAILURE=yes
		;;
      --query)  MODE=query
		RETURNFAILURE=yes
		;;
      --no-fallback)
		NOFALLBACK=yes
		;;
      --*)	printerror syntax error: unknown option \"$1\"
		exit 103
		;;
	*)      case ${state} in
		I)  verifyparameter $1
		    INITSCRIPTID=$1
		    ;;
		II) verifyparameter $1
		    ACTION=$1
		    ;;
		esac
		state=${state}I
		;;
    esac
    shift
done

if test ${state} != III ; then
    printerror syntax error: missing required parameter
    exit 103
fi

#NOTE: It may not be obvious, but "$@" from this point on must expand
#to the extra initscript parameters, except inside functions.

if test -d /run/systemd/system ; then
    is_systemd=1
    UNIT="${INITSCRIPTID%.sh}.service"
elif test -f /run/openrc/softlevel ; then
    is_openrc=1
elif test ! -f "${INITDPREFIX}${INITSCRIPTID}" ; then
    ## Verifies if the given initscript ID is known
    ## For sysvinit, this error is critical
    printerror unknown initscript, ${INITDPREFIX}${INITSCRIPTID} not found.
fi

## Queries sysvinit for the current runlevel
if [ ! -x ${RUNLEVELHELPER} ] || ! RL=`${RUNLEVELHELPER}`; then
    if [ -n "$is_systemd" ] && systemctl is-active --quiet sysinit.target; then
        # under systemd, the [2345] runlevels are only set upon reaching them;
        # if we are past sysinit.target (roughly equivalent to rcS), consider
        # this as runlevel 5 (this is only being used for validating rcN.d
        # symlinks, so the precise value does not matter much)
        RL=5
    else
        printerror "could not determine current runlevel"
        # this usually fails in schroots etc., ignore failure (#823611)
        RL=
    fi
fi
# strip off previous runlevel
RL=${RL#* }

## Running ${RUNLEVELHELPER} to get current runlevel do not work in
## the boot runlevel (scripts in /etc/rcS.d/), as /var/run/utmp
## contains runlevel 0 or 6 (written at shutdown) at that point.
if test x${RL} = x0 || test x${RL} = x6 ; then
    if ps -fp 1 | grep -q 'init boot' ; then
       RL=S
    fi
fi

## Handles shutdown sequences VERY safely
## i.e.: forget about policy, and do all we can to run the script.
## BTW, why the heck are we being run in a shutdown runlevel?!
if test x${RL} = x0 || test x${RL} = x6 ; then
    FORCE=yes
    RETRY=yes
    POLICYHELPER=
    BEQUIET=
    printerror "-----------------------------------------------------"
    printerror "WARNING: 'invoke-rc.d ${INITSCRIPTID} ${ACTION}' called"
    printerror "during shutdown sequence."
    printerror "enabling safe mode: initscript policy layer disabled"
    printerror "-----------------------------------------------------"
fi

## Verifies the existance of proper S??initscriptID and K??initscriptID 
## *links* in the proper /etc/rc?.d/ directory
verifyrclink () {
  #
  # verifies if parameters are non-dangling symlinks
  # all parameters are verified
  #
  doexit=
  while test $# -gt 0 ; do
    if test ! -L "$1" ; then
        printerror not a symlink: $1
        doexit=102
    fi
    if test ! -f "$1" ; then
        printerror dangling symlink: $1
        doexit=102
    fi
    shift
  done
  if test x${doexit} != x && test x${RETRY} = x; then
     exit ${doexit}
  fi
  return 0
}

testexec () {
  #
  # returns true if any of the parameters is
  # executable (after following links)
  #
  while test $# -gt 0 ; do
    if test -x "$1" ; then
       return 0
    fi
    shift
  done
  return 1
}

RC=

###
### LOCAL POLICY: Enforce that the script/unit is enabled. For SysV init
### scripts, this needs a start entry in either runlevel S or current runlevel
### to allow start or restart.
if [ -n "$is_systemd" ]; then
    case ${ACTION} in
        start|restart|try-restart)
            # Note that systemd 215 does not yet support is-enabled for SysV scripts,
            # this works only with systemd >= 220-1 (systemd-sysv-install). Add a
            # simple fallback check which can be dropped after releasing stretch.
            if systemctl --quiet is-enabled "${UNIT}" 2>/dev/null || \
               ls ${RCDPREFIX}[S2345].d/S[0-9][0-9]${INITSCRIPTID} >/dev/null 2>&1; then
                RC=104
            elif systemctl --quiet is-active "${UNIT}" 2>/dev/null; then
                RC=104
            else
                RC=101
            fi
            ;;
    esac
else
    # we do handle multiple links per runlevel
    # but we don't handle embedded blanks in link names :-(
    if test x${RL} != x ; then
	SLINK=`ls -d -Q ${RCDPREFIX}${RL}.d/S[0-9][0-9]${INITSCRIPTID} 2>/dev/null | xargs`
	KLINK=`ls -d -Q ${RCDPREFIX}${RL}.d/K[0-9][0-9]${INITSCRIPTID} 2>/dev/null | xargs`
	SSLINK=`ls -d -Q ${RCDPREFIX}S.d/S[0-9][0-9]${INITSCRIPTID} 2>/dev/null | xargs`

verifyrclink ${SLINK} ${KLINK} ${SSLINK}
    fi

case ${ACTION} in
      start|restart|try-restart)
	if testexec ${SLINK} ; then
	    RC=104
	elif testexec ${KLINK} ; then
	    RC=101
	elif testexec ${SSLINK} ; then
	    RC=104
	else
	    RC=101
	fi
      ;;
    esac
fi

# test if /etc/init.d/initscript is actually executable
_executable=
if [ -n "$is_systemd" ]; then
    _executable=1
elif testexec "${INITDPREFIX}${INITSCRIPTID}"; then
    _executable=1
fi
if [ "$_executable" = "1" ]; then
    if test x${RC} = x && test x${MODE} = xquery ; then
        RC=105
    fi

# call policy layer
    querypolicy
    case ${RC} in
        101|104)
           ;;
        *) if test x${MODE} != xquery ; then
	       printerror policy-rc.d returned error status ${RC}
	       if test x${RETRY} = x ; then
	           exit ${RC}
               else
    	           RC=102
    	       fi
           fi
           ;;
    esac
else
    ###
    ### LOCAL INITSCRIPT POLICY: non-executable initscript; deny exec.
    ### (this is common sense, actually :^P )
    ###
    RC=101
fi

## Handles --query
if test x${MODE} = xquery ; then
    exit ${RC}
fi

setechoactions () {
    if test $# -gt 1 ; then
	echoaction=true
    else
	echoaction=
    fi
}
getnextaction () {
    saction=$1
    shift
    ACTION="$@"
}

## Executes initscript
## note that $ACTION is a space-separated list of actions
## to be attempted in order until one suceeds.
if test x${FORCE} != x || test ${RC} -eq 104 ; then
    if [ -n "$is_systemd" ] || testexec "${INITDPREFIX}${INITSCRIPTID}" ; then
	RC=102
	setechoactions ${ACTION}
	while test ! -z "${ACTION}" ; do
	    getnextaction ${ACTION}
	    if test ! -z ${echoaction} ; then
		printerror executing initscript action \"${saction}\"...
	    fi

if [ -n "$is_systemd" ]; then
                if [ -n "$DPKG_MAINTSCRIPT_PACKAGE" ]; then
                    # If we are called by a maintainer script, chances are good that a
                    # new or updated sysv init script was installed.  Reload daemon to
                    # pick up any changes.
                    systemctl daemon-reload
                fi
                _state=$(systemctl -p LoadState show "${UNIT}" 2>/dev/null)

# avoid deadlocks during bootup and shutdown from units/hooks
                # which call "invoke-rc.d service reload" and similar, since
                # the synchronous wait plus systemd's normal behaviour of
                # transactionally processing all dependencies first easily
                # causes dependency loops
                if ! systemctl --quiet is-active multi-user.target; then
                    sctl_args="--job-mode=ignore-dependencies"
                fi
                case $saction in
                    start|restart|try-restart)
                        [ "$_state" != "LoadState=masked" ] || exit 0
                        systemctl $sctl_args "${saction}" "${UNIT}" && exit 0
                        ;;
                    stop|status)
                        systemctl $sctl_args "${saction}" "${UNIT}" && exit 0
                        ;;
                    reload)
                        [ "$_state" != "LoadState=masked" ] || exit 0
                        _canreload="$(systemctl -p CanReload show ${UNIT} 2>/dev/null)"
                        if [ "$_canreload" = "CanReload=no" ]; then
                            "${INITDPREFIX}${INITSCRIPTID}" "${saction}" "$@" && exit 0
                        else
                            systemctl $sctl_args reload "${UNIT}" && exit 0
                        fi
                        ;;
                    force-stop)
                        systemctl --signal=KILL kill "${UNIT}" && exit 0
                        ;;
                    force-reload)
                        [ "$_state" != "LoadState=masked" ] || exit 0
                        _canreload="$(systemctl -p CanReload show ${UNIT} 2>/dev/null)"
                        if [ "$_canreload" = "CanReload=no" ]; then
                           systemctl $sctl_args restart "${UNIT}" && exit 0
                        else
                           systemctl $sctl_args reload "${UNIT}" && exit 0
                        fi
                        ;;
                    *)
                        # We try to run non-standard actions by running
                        # the init script directly.
                        "${INITDPREFIX}${INITSCRIPTID}" "${saction}" "$@" && exit 0
                        ;;
                esac
	    elif [ -n "$is_openrc" ]; then
		rc-service "${INITSCRIPTID}" "${saction}" && exit 0
	    else
		"${INITDPREFIX}${INITSCRIPTID}" "${saction}" "$@" && exit 0
	    fi
	    RC=$?

if test ! -z "${ACTION}" ; then
		printerror action \"${saction}\" failed, trying next action...
	    fi
	done
	printerror initscript ${INITSCRIPTID}, action \"${saction}\" failed.
	if [ -n "$is_systemd" ] && [ "$saction" = start -o "$saction" = restart -o "$saction" = "try-restart" ]; then
	    systemctl status --full --no-pager "${UNIT}" || true
	fi
	exit ${RC}
    fi
    exit 102
fi

## Handles --disclose-deny and denied "status" action (bug #381497)
if test ${RC} -eq 101 && test x${RETURNFAILURE} = x ; then
    if test "x${ACTION%% *}" = "xstatus"; then
	printerror emulating initscript action \"status\", returning \"unknown\"
	RC=4
    else
        RC=0
    fi
else
    formataction ${ACTION}
    printerror initscript ${naction} \"${printaction}\" not executed.
fi

exit ${RC}

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