# $NetBSD: rc.subr,v 1.66 2006/04/01 10:05:50 he Exp $ # $FreeBSD$ # # Copyright (c) 1997-2004 The NetBSD Foundation, Inc. # All rights reserved. # # This code is derived from software contributed to The NetBSD Foundation # by Luke Mewburn. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. All advertising materials mentioning features or use of this software # must display the following acknowledgement: # This product includes software developed by the NetBSD # Foundation, Inc. and its contributors. # 4. Neither the name of The NetBSD Foundation nor the names of its # contributors may be used to endorse or promote products derived # from this software without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE # POSSIBILITY OF SUCH DAMAGE. # # rc.subr # functions used by various rc scripts # : ${rcvar_manpage:='rc.conf(5)'} # # Operating System dependent/independent variables # if [ -z "${_rc_subr_loaded}" ]; then _rc_subr_loaded="YES" SYSCTL="/sbin/sysctl" SYSCTL_N="${SYSCTL} -n" CMD_OSTYPE="${SYSCTL_N} kern.ostype" OSTYPE=`${CMD_OSTYPE}` ID="/usr/bin/id" IDCMD="if [ -x $ID ]; then $ID -un; fi" PS="/bin/ps -ww" JID=`$PS -p $$ -o jid=` case ${OSTYPE} in FreeBSD) SYSCTL_W="${SYSCTL}" ;; NetBSD) SYSCTL_W="${SYSCTL} -w" ;; esac # # functions # --------- # # set_rcvar base_var # Set the variable name enabling a specific service. # FreeBSD uses ${service}_enable, while NetBSD uses # just the name of the service. For example: # FreeBSD: sendmail_enable="YES" # NetBSD : sendmail="YES" # $1 - if $name is not the base to work of off, specify # a different one # set_rcvar() { if [ -z "$1" ]; then base_var=${name} else base_var="$1" fi case ${OSTYPE} in FreeBSD) echo ${base_var}_enable ;; NetBSD) echo ${base_var} ;; *) echo 'XXX' ;; esac } # # force_depend script # Force a service to start. Intended for use by services # to resolve dependency issues. It is assumed the caller # has check to make sure this call is necessary # $1 - filename of script, in /etc/rc.d, to run # force_depend() { _depend="$1" info "${name} depends on ${_depend}, which will be forced to start." if ! /etc/rc.d/${_depend} forcestart; then warn "Unable to force ${_depend}. It may already be running." return 1 fi return 0 } # # checkyesno var # Test $1 variable, and warn if not set to YES or NO. # Return 0 if it's "yes" (et al), nonzero otherwise. # checkyesno() { eval _value=\$${1} debug "checkyesno: $1 is set to $_value." case $_value in # "yes", "true", "on", or "1" [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) return 0 ;; # "no", "false", "off", or "0" [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) return 1 ;; *) warn "\$${1} is not set properly - see ${rcvar_manpage}." return 1 ;; esac } # # reverse_list list # print the list in reverse order # reverse_list() { _revlist= for _revfile; do _revlist="$_revfile $_revlist" done echo $_revlist } # # mount_critical_filesystems type # Go through the list of critical filesystems as provided in # the rc.conf(5) variable $critical_filesystems_${type}, checking # each one to see if it is mounted, and if it is not, mounting it. # mount_critical_filesystems() { eval _fslist=\$critical_filesystems_${1} for _fs in $_fslist; do mount | ( _ismounted=false while read what _on on _type type; do if [ $on = $_fs ]; then _ismounted=true fi done if $_ismounted; then : else mount $_fs >/dev/null 2>&1 fi ) done } # # check_pidfile pidfile procname [interpreter] # Parses the first line of pidfile for a PID, and ensures # that the process is running and matches procname. # Prints the matching PID upon success, nothing otherwise. # interpreter is optional; see _find_processes() for details. # check_pidfile() { _pidfile=$1 _procname=$2 _interpreter=$3 if [ -z "$_pidfile" -o -z "$_procname" ]; then err 3 'USAGE: check_pidfile pidfile procname [interpreter]' fi if [ ! -f $_pidfile ]; then debug "pid file ($_pidfile): not readable." return fi read _pid _junk < $_pidfile if [ -z "$_pid" ]; then debug "pid file ($_pidfile): no pid in file." return fi _find_processes $_procname ${_interpreter:-.} '-p '"$_pid" } # # check_process procname [interpreter] # Ensures that a process (or processes) named procname is running. # Prints a list of matching PIDs. # interpreter is optional; see _find_processes() for details. # check_process() { _procname=$1 _interpreter=$2 if [ -z "$_procname" ]; then err 3 'USAGE: check_process procname [interpreter]' fi _find_processes $_procname ${_interpreter:-.} '-ax' } # # _find_processes procname interpreter psargs # Search for procname in the output of ps generated by psargs. # Prints the PIDs of any matching processes, space separated. # # If interpreter == ".", check the following variations of procname # against the first word of each command: # procname # `basename procname` # `basename procname` + ":" # "(" + `basename procname` + ")" # "[" + `basename procname` + "]" # # If interpreter != ".", read the first line of procname, remove the # leading #!, normalise whitespace, append procname, and attempt to # match that against each command, either as is, or with extra words # at the end. As an alternative, to deal with interpreted daemons # using perl, the basename of the interpreter plus a colon is also # tried as the prefix to procname. # _find_processes() { if [ $# -ne 3 ]; then err 3 'USAGE: _find_processes procname interpreter psargs' fi _procname=$1 _interpreter=$2 _psargs=$3 _pref= if [ $_interpreter != "." ]; then # an interpreted script read _interp < $_procname # read interpreter name _interp=${_interp#\#!} # strip #! set -- $_interp if [ $_interpreter != $1 ]; then warn "\$command_interpreter $_interpreter != $1" fi _interp="$* $_procname" # cleanup spaces, add _procname _interpbn=${1##*/} _fp_args='_argv' _fp_match='case "$_argv" in ${_interp}|"${_interp} "*|"${_interpbn}: ${_procname}"*)' else # a normal daemon _procnamebn=${_procname##*/} _fp_args='_arg0 _argv' _fp_match='case "$_arg0" in $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})"|"[${_procnamebn}]")' fi _proccheck="\ $PS 2>/dev/null -o pid,jid,command $_psargs"' | while read _npid _jid '"$_fp_args"'; do case "$_npid" in PID) continue;; esac; '"$_fp_match"' if [ "$JID" -eq "$_jid" ]; then echo -n "$_pref$_npid"; _pref=" "; fi ;; esac done' # debug "in _find_processes: proccheck is ($_proccheck)." eval $_proccheck } # # wait_for_pids pid [pid ...] # spins until none of the pids exist # wait_for_pids() { _list="$@" if [ -z "$_list" ]; then return fi _prefix= while true; do _nlist=""; for _j in $_list; do if kill -0 $_j 2>/dev/null; then _nlist="${_nlist}${_nlist:+ }$_j" fi done if [ -z "$_nlist" ]; then break fi _list=$_nlist echo -n ${_prefix:-"Waiting for PIDS: "}$_list _prefix=", " sleep 2 done if [ -n "$_prefix" ]; then echo "." fi } # # run_rc_command argument # Search for argument in the list of supported commands, which is: # "start stop restart rcvar status poll ${extra_commands}" # If there's a match, run ${argument}_cmd or the default method # (see below). # # If argument has a given prefix, then change the operation as follows: # Prefix Operation # ------ --------- # fast Skip the pid check, and set rc_fast=yes # force Set ${rcvar} to YES, and set rc_force=yes # one Set ${rcvar} to YES # # The following globals are used: # # Name Needed Purpose # ---- ------ ------- # name y Name of script. # # command n Full path to command. # Not needed if ${rc_arg}_cmd is set for # each keyword. # # command_args n Optional args/shell directives for command. # # command_interpreter n If not empty, command is interpreted, so # call check_{pidfile,process}() appropriately. # # extra_commands n List of extra commands supported. # # pidfile n If set, use check_pidfile $pidfile $command, # otherwise use check_process $command. # In either case, only check if $command is set. # # procname n Process name to check for instead of $command. # # rcvar n This is checked with checkyesno to determine # if the action should be run. # # ${name}_program n Full path to command. # Meant to be used in /etc/rc.conf to override # ${command}. # # ${name}_chroot n Directory to chroot to before running ${command} # Requires /usr to be mounted. # # ${name}_chdir n Directory to cd to before running ${command} # (if not using ${name}_chroot). # # ${name}_flags n Arguments to call ${command} with. # NOTE: $flags from the parent environment # can be used to override this. # # ${name}_nice n Nice level to run ${command} at. # # ${name}_user n User to run ${command} as, using su(1) if not # using ${name}_chroot. # Requires /usr to be mounted. # # ${name}_group n Group to run chrooted ${command} as. # Requires /usr to be mounted. # # ${name}_groups n Comma separated list of supplementary groups # to run the chrooted ${command} with. # Requires /usr to be mounted. # # ${rc_arg}_cmd n If set, use this as the method when invoked; # Otherwise, use default command (see below) # # ${rc_arg}_precmd n If set, run just before performing the # ${rc_arg}_cmd method in the default # operation (i.e, after checking for required # bits and process (non)existence). # If this completes with a non-zero exit code, # don't run ${rc_arg}_cmd. # # ${rc_arg}_postcmd n If set, run just after performing the # ${rc_arg}_cmd method, if that method # returned a zero exit code. # # required_dirs n If set, check for the existence of the given # directories before running the default # (re)start command. # # required_files n If set, check for the readability of the given # files before running the default (re)start # command. # # required_vars n If set, perform checkyesno on each of the # listed variables before running the default # (re)start command. # # Default behaviour for a given argument, if no override method is # provided: # # Argument Default behaviour # -------- ----------------- # start if !running && checkyesno ${rcvar} # ${command} # # stop if ${pidfile} # rc_pid=$(check_pidfile $pidfile $command) # else # rc_pid=$(check_process $command) # kill $sig_stop $rc_pid # wait_for_pids $rc_pid # ($sig_stop defaults to TERM.) # # reload Similar to stop, except use $sig_reload instead, # and doesn't wait_for_pids. # $sig_reload defaults to HUP. # Note that `reload' isn't provided by default, # it should be enabled via $extra_commands. # # restart Run `stop' then `start'. # # status Show if ${command} is running, etc. # # poll Wait for ${command} to exit. # # rcvar Display what rc.conf variable is used (if any). # # Variables available to methods, and after run_rc_command() has # completed: # # Variable Purpose # -------- ------- # rc_arg Argument to command, after fast/force/one processing # performed # # rc_flags Flags to start the default command with. # Defaults to ${name}_flags, unless overridden # by $flags from the environment. # This variable may be changed by the precmd method. # # rc_pid PID of command (if appropriate) # # rc_fast Not empty if "fast" was provided (q.v.) # # rc_force Not empty if "force" was provided (q.v.) # # run_rc_command() { _return=0 rc_arg=$1 if [ -z "$name" ]; then err 3 'run_rc_command: $name is not set.' fi # Don't repeat the first argument when passing additional command- # line arguments to the command subroutines. # shift 1 rc_extra_args="$*" _rc_prefix= case "$rc_arg" in fast*) # "fast" prefix; don't check pid rc_arg=${rc_arg#fast} rc_fast=yes ;; force*) # "force prefix; always run rc_force=yes _rc_prefix=force rc_arg=${rc_arg#${_rc_prefix}} if [ -n "${rcvar}" ]; then eval ${rcvar}=YES fi ;; one*) # "one" prefix; set ${rcvar}=yes _rc_prefix=one rc_arg=${rc_arg#${_rc_prefix}} if [ -n "${rcvar}" ]; then eval ${rcvar}=YES fi ;; esac _keywords="start stop restart rcvar $extra_commands" rc_pid= _pidcmd= _procname=${procname:-${command}} # setup pid check command if [ -n "$_procname" ]; then if [ -n "$pidfile" ]; then _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')' else _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')' fi if [ -n "$_pidcmd" ]; then _keywords="${_keywords} status poll" fi fi if [ -z "$rc_arg" ]; then rc_usage $_keywords fi if [ -n "$flags" ]; then # allow override from environment rc_flags=$flags else eval rc_flags=\$${name}_flags fi eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \ _nice=\$${name}_nice _user=\$${name}_user \ _group=\$${name}_group _groups=\$${name}_groups if [ -n "$_user" ]; then # unset $_user if running as that user if [ "$_user" = "$(eval $IDCMD)" ]; then unset _user fi fi # if ${rcvar} is set, and $1 is not # "rcvar", then run # checkyesno ${rcvar} # and return if that failed # if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" ]; then if ! checkyesno ${rcvar}; then return 0 fi fi eval $_pidcmd # determine the pid if necessary for _elem in $_keywords; do if [ "$_elem" != "$rc_arg" ]; then continue fi # if there's a custom ${XXX_cmd}, # run that instead of the default # eval _cmd=\$${rc_arg}_cmd _precmd=\$${rc_arg}_precmd \ _postcmd=\$${rc_arg}_postcmd if [ -n "$_cmd" ]; then # if the precmd failed and force # isn't set, exit # if [ -n "$_precmd" ]; then debug "run_rc_command: evaluating ${_precmd}()." eval $_precmd $rc_extra_args _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi if [ -n "$_cmd" ]; then debug "run_rc_command: evaluating ${_cmd}()." eval $_cmd $rc_extra_args _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi if [ -n "$_postcmd" ]; then debug "run_rc_command: evaluating ${_postcmd}()." eval $_postcmd $rc_extra_args _return=$? fi return $_return fi case "$rc_arg" in # default operations... status) if [ -n "$rc_pid" ]; then echo "${name} is running as pid $rc_pid." else echo "${name} is not running." return 1 fi ;; start) if [ -z "$rc_fast" -a -n "$rc_pid" ]; then echo 1>&2 "${name} already running? (pid=$rc_pid)." return 1 fi if [ ! -x ${_chroot}${command} ]; then warn "run_rc_command: cannot run $command" return 1 fi # check for required variables, # directories, and files # for _f in $required_vars; do if ! checkyesno $_f; then warn "\$${_f} is not enabled." if [ -z "$rc_force" ]; then return 1 fi fi done for _f in $required_dirs; do if [ ! -d "${_f}/." ]; then warn "${_f} is not a directory." if [ -z "$rc_force" ]; then return 1 fi fi done for _f in $required_files; do if [ ! -r "${_f}" ]; then warn "${_f} is not readable." if [ -z "$rc_force" ]; then return 1 fi fi done # if the precmd failed and force # isn't set, exit # if [ -n "${_precmd}" ]; then debug "run_rc_command: evaluating ${_precmd}()." eval $_precmd _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi # setup the full command to run # echo "Starting ${name}." if [ -n "$_chroot" ]; then _doit="\ ${_nice:+nice -n $_nice }\ chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\ $_chroot $command $rc_flags $command_args" else _doit="\ ${_chdir:+cd $_chdir && }\ $command $rc_flags $command_args" if [ -n "$_user" ]; then _doit="su -m $_user -c 'sh -c \"$_doit\"'" fi if [ -n "$_nice" ]; then if [ -z "$_user" ]; then _doit="sh -c \"$_doit\"" fi _doit="nice -n $_nice $_doit" fi fi # run the full command; # if the cmd failed and force # isn't set, exit # debug "run_rc_command: _doit: $_doit" eval $_doit _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 # finally, run postcmd # if [ -n "${_postcmd}" ]; then debug "run_rc_command: evaluating ${_postcmd}()." eval $_postcmd fi ;; stop) if [ -z "$rc_pid" ]; then [ -n "$rc_fast" ] && return 0 if [ -n "$pidfile" ]; then echo 1>&2 \ "${name} not running? (check $pidfile)." else echo 1>&2 "${name} not running?" fi return 1 fi # if the precmd failed and force # isn't set, exit # if [ -n "$_precmd" ]; then eval $_precmd _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi # send the signal to stop # echo "Stopping ${name}." _doit="kill -${sig_stop:-TERM} $rc_pid" if [ -n "$_user" ]; then _doit="su -m $_user -c 'sh -c \"$_doit\"'" fi # if the stop cmd failed and force # isn't set, exit # eval $_doit _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 # wait for the command to exit, # and run postcmd. wait_for_pids $rc_pid if [ -n "$_postcmd" ]; then eval $_postcmd _return=$? fi ;; reload) if [ -z "$rc_pid" ]; then if [ -n "$pidfile" ]; then echo 1>&2 \ "${name} not running? (check $pidfile)." else echo 1>&2 "${name} not running?" fi return 1 fi echo "Reloading ${name} config files." if [ -n "$_precmd" ]; then eval $_precmd _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi _doit="kill -${sig_reload:-HUP} $rc_pid" if [ -n "$_user" ]; then _doit="su -m $_user -c 'sh -c \"$_doit\"'" fi eval $_doit _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 if [ -n "$_postcmd" ]; then eval $_postcmd _return=$? fi ;; restart) if [ -n "$_precmd" ]; then eval $_precmd $rc_extra_args _return=$? [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 fi # prevent restart being called more # than once by any given script # if ${_rc_restart_done:-false}; then return 0 fi _rc_restart_done=true # run stop in a subshell to keep variables for start ( run_rc_command ${_rc_prefix}stop $rc_extra_args ) run_rc_command ${_rc_prefix}start $rc_extra_args if [ -n "$_postcmd" ]; then eval $_postcmd $rc_extra_args _return=$? fi ;; poll) if [ -n "$rc_pid" ]; then wait_for_pids $rc_pid fi ;; rcvar) echo "# $name" if [ -n "$rcvar" ]; then if checkyesno ${rcvar}; then echo "\$${rcvar}=YES" else echo "\$${rcvar}=NO" fi fi ;; *) rc_usage $_keywords ;; esac return $_return done echo 1>&2 "$0: unknown directive '$rc_arg'." rc_usage $_keywords # not reached } # # run_rc_script file arg # Start the script `file' with `arg', and correctly handle the # return value from the script. If `file' ends with `.sh', it's # sourced into the current environment. If `file' appears to be # a backup or scratch file, ignore it. Otherwise if it's # executable run as a child process. # run_rc_script() { _file=$1 _arg=$2 if [ -z "$_file" -o -z "$_arg" ]; then err 3 'USAGE: run_rc_script file arg' fi unset name command command_args command_interpreter \ extra_commands pidfile procname \ rcvar required_dirs required_files required_vars eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd case "$_file" in /etc/rc.d/*.sh) # run in current shell set $_arg; . $_file ;; *[~#]|*.OLD|*.bak|*.orig|*,v) # scratch file; skip warn "Ignoring scratch file $_file" ;; *) # run in subshell if [ -x $_file ]; then if [ -n "$rc_fast_and_loose" ]; then set $_arg; . $_file else ( trap "echo Script $_file interrupted; kill -QUIT $$" 3 trap "echo Script $_file interrupted; exit 1" 2 set $_arg; . $_file ) fi fi ;; esac } # # load_rc_config name # Source in the configuration file for a given name. # load_rc_config() { local _tmp _name=$1 if [ -z "$_name" ]; then err 3 'USAGE: load_rc_config name' fi if ${_rc_conf_loaded:-false}; then : else if [ -r /etc/defaults/rc.conf ]; then debug "Sourcing /etc/defaults/rc.conf" . /etc/defaults/rc.conf source_rc_confs elif [ -r /etc/rc.conf ]; then debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)." . /etc/rc.conf fi _rc_conf_loaded=true fi eval _override_command=\$${name}_program command=${command:+${_override_command:-$command}} if [ -z "${command}" ]; then _tmp=`/bin/realpath $0` prefix=${_tmp%/etc/rc.d/*}/ else prefix=${command%/*bin/*}/ fi if [ "${prefix}" = "/" -o "${prefix}" = "/usr/" ] ; then etcdir="/etc" else etcdir="${prefix}etc" fi # XXX - Deprecated if [ -f /etc/rc.conf.d/${_name} -a ${etcdir} != "/etc" ]; then debug "Sourcing /etc/rc.conf.d/${_name}" warn "Warning: /etc/rc.conf.d/${_name} is deprecated, please use ${etcdir}/rc.conf.d/${_name} instead." if [ -f ${etcdir}/rc.conf.d/${_name} ]; then warn "Warning: Both /etc/rc.conf.d/${_name} and ${etcdir}/rc.conf.d/${_name} exist." fi . /etc/rc.conf.d/${_name} fi if [ -f ${etcdir}/rc.conf.d/${_name} ]; then debug "Sourcing ${etcdir}/rc.conf.d/${_name}" . ${etcdir}/rc.conf.d/${_name} fi # XXX - Deprecated variable name support # case ${OSTYPE} in FreeBSD) [ -n "$portmap_enable" ] && rpcbind_enable="$portmap_enable" [ -n "$portmap_program" ] && rpcbind_program="$portmap_program" [ -n "$portmap_flags" ] && rpcbind_flags="$portmap_flags" [ -n "$single_mountd_enable" ] && mountd_enable="$single_mountd_enable" [ -n "$xntpd_enable" ] && ntpd_enable="$xntpd_enable" [ -n "$xntpd_program" ] && ntpd_program="$xntpd_program" [ -n "$xntpd_flags" ] && ntpd_flags="$xntpd_flags" [ -n "$dhcp_program" ] && dhclient_program="$dhcp_program" [ -n "$dhcp_flags" ] && dhclient_flags="$dhcp_flags" ;; esac } # # load_rc_config_var name var # Read the rc.conf(5) var for name and set in the # current shell, using load_rc_config in a subshell to prevent # unwanted side effects from other variable assignments. # load_rc_config_var() { if [ $# -ne 2 ]; then err 3 'USAGE: load_rc_config_var name var' fi eval $(eval '( load_rc_config '$1' >/dev/null; if [ -n "${'$2'}" -o "${'$2'-UNSET}" != "UNSET" ]; then echo '$2'=\'\''${'$2'}\'\''; fi )' ) } # # rc_usage commands # Print a usage string for $0, with `commands' being a list of # valid commands. # rc_usage() { echo -n 1>&2 "Usage: $0 [fast|force|one](" _sep= for _elem; do echo -n 1>&2 "$_sep$_elem" _sep="|" done echo 1>&2 ")" exit 1 } # # err exitval message # Display message to stderr and log to the syslog, and exit with exitval. # err() { exitval=$1 shift if [ -x /usr/bin/logger ]; then logger "$0: ERROR: $*" fi echo 1>&2 "$0: ERROR: $*" exit $exitval } # # warn message # Display message to stderr and log to the syslog. # warn() { if [ -x /usr/bin/logger ]; then logger "$0: WARNING: $*" fi echo 1>&2 "$0: WARNING: $*" } # # info message # Display informational message to stdout and log to syslog. # info() { case ${rc_info} in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) if [ -x /usr/bin/logger ]; then logger "$0: INFO: $*" fi echo "$0: INFO: $*" ;; esac } # # debug message # If debugging is enabled in rc.conf output message to stderr. # BEWARE that you don't call any subroutine that itself calls this # function. # debug() { case ${rc_debug} in [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) if [ -x /usr/bin/logger ]; then logger "$0: INFO: $*" fi echo 1>&2 "$0: DEBUG: $*" ;; esac } # # backup_file action file cur backup # Make a backup copy of `file' into `cur', and save the previous # version of `cur' as `backup' or use rcs for archiving. # # This routine checks the value of the backup_uses_rcs variable, # which can be either YES or NO. # # The `action' keyword can be one of the following: # # add `file' is now being backed up (and is possibly # being reentered into the backups system). `cur' # is created and RCS files, if necessary, are # created as well. # # update `file' has changed and needs to be backed up. # If `cur' exists, it is copied to to `back' or # checked into RCS (if the repository file is old), # and then `file' is copied to `cur'. Another RCS # check in done here if RCS is being used. # # remove `file' is no longer being tracked by the backups # system. If RCS is not being used, `cur' is moved # to `back', otherwise an empty file is checked in, # and then `cur' is removed. # # backup_file() { _action=$1 _file=$2 _cur=$3 _back=$4 if checkyesno backup_uses_rcs; then _msg0="backup archive" _msg1="update" # ensure that history file is not locked if [ -f $_cur,v ]; then rcs -q -u -U -M $_cur fi # ensure after switching to rcs that the # current backup is not lost if [ -f $_cur ]; then # no archive, or current newer than archive if [ ! -f $_cur,v -o $_cur -nt $_cur,v ]; then ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur rcs -q -kb -U $_cur co -q -f -u $_cur fi fi case $_action in add|update) cp -p $_file $_cur ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur rcs -q -kb -U $_cur co -q -f -u $_cur chown root:wheel $_cur $_cur,v ;; remove) cp /dev/null $_cur ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur rcs -q -kb -U $_cur chown root:wheel $_cur $_cur,v rm $_cur ;; esac else case $_action in add|update) if [ -f $_cur ]; then cp -p $_cur $_back fi cp -p $_file $_cur chown root:wheel $_cur ;; remove) mv -f $_cur $_back ;; esac fi } # make_symlink src link # Make a symbolic link 'link' to src from basedir. If the # directory in which link is to be created does not exist # a warning will be displayed and an error will be returned. # Returns 0 on sucess, 1 otherwise. # make_symlink() { local src link linkdir _me src="$1" link="$2" linkdir="`dirname $link`" _me="make_symlink()" if [ -z "$src" -o -z "$link" ]; then warn "$_me: requires two arguments." return 1 fi if [ ! -d "$linkdir" ]; then warn "$_me: the directory $linkdir does not exist." return 1 fi if ! ln -sf $src $link; then warn "$_me: unable to make a symbolic link from $link to $src" return 1 fi return 0 } # devfs_rulesets_from_file file # Reads a set of devfs commands from file, and creates # the specified rulesets with their rules. Returns non-zero # if there was an error. # devfs_rulesets_from_file() { local file _err _me file="$1" _me="devfs_rulesets_from_file" _err=0 if [ -z "$file" ]; then warn "$_me: you must specify a file" return 1 fi if [ ! -e "$file" ]; then debug "$_me: no such file ($file)" return 0 fi debug "reading rulesets from file ($file)" { while read line do case $line in \#*) continue ;; \[*\]*) rulenum=`expr "$line" : "\[.*=\([0-9]*\)\]"` if [ -z "$rulenum" ]; then warn "$_me: cannot extract rule number ($line)" _err=1 break fi rulename=`expr "$line" : "\[\(.*\)=[0-9]*\]"` if [ -z "$rulename" ]; then warn "$_me: cannot extract rule name ($line)" _err=1 break; fi eval $rulename=\$rulenum debug "found ruleset: $rulename=$rulenum" if ! /sbin/devfs rule -s $rulenum delset; then _err=1 break fi ;; *) rulecmd="${line%%"\#*"}" # evaluate the command incase it includes # other rules if [ -n "$rulecmd" ]; then debug "adding rule ($rulecmd)" if ! eval /sbin/devfs rule -s $rulenum $rulecmd then _err=1 break fi fi ;; esac if [ $_err -ne 0 ]; then debug "error in $_me" break fi done } < $file return $_err } # devfs_init_rulesets # Initializes rulesets from configuration files. Returns # non-zero if there was an error. # devfs_init_rulesets() { local file _me _me="devfs_init_rulesets" # Go through this only once if [ -n "$devfs_rulesets_init" ]; then debug "$_me: devfs rulesets already initialized" return fi for file in $devfs_rulesets; do devfs_rulesets_from_file $file || return 1 done devfs_rulesets_init=1 debug "$_me: devfs rulesets initialized" return 0 } # devfs_set_ruleset ruleset [dir] # Sets the default ruleset of dir to ruleset. The ruleset argument # must be a ruleset name as specified in devfs.rules(5) file. # Returns non-zero if it could not set it successfully. # devfs_set_ruleset() { local devdir rs _me [ -n "$1" ] && eval rs=\$$1 || rs= [ -n "$2" ] && devdir="-m "$2"" || devdir= _me="devfs_set_ruleset" if [ -z "$rs" ]; then warn "$_me: you must specify a ruleset number" return 1 fi debug "$_me: setting ruleset ($rs) on mount-point (${devdir#-m })" if ! /sbin/devfs $devdir ruleset $rs; then warn "$_me: unable to set ruleset $rs to ${devdir#-m }" return 1 fi return 0 } # devfs_apply_ruleset ruleset [dir] # Apply ruleset number $ruleset to the devfs mountpoint $dir. # The ruleset argument must be a ruleset name as specified # in a devfs.rules(5) file. Returns 0 on success or non-zero # if it could not apply the ruleset. # devfs_apply_ruleset() { local devdir rs _me [ -n "$1" ] && eval rs=\$$1 || rs= [ -n "$2" ] && devdir="-m "$2"" || devdir= _me="devfs_apply_ruleset" if [ -z "$rs" ]; then warn "$_me: you must specify a ruleset" return 1 fi debug "$_me: applying ruleset ($rs) to mount-point (${devdir#-m })" if ! /sbin/devfs $devdir rule -s $rs applyset; then warn "$_me: unable to apply ruleset $rs to ${devdir#-m }" return 1 fi return 0 } # devfs_domount dir [ruleset] # Mount devfs on dir. If ruleset is specified it is set # on the mount-point. It must also be a ruleset name as specified # in a devfs.rules(5) file. Returns 0 on success. # devfs_domount() { local devdir rs _me devdir="$1" [ -n "$2" ] && rs=$2 || rs= _me="devfs_domount()" if [ -z "$devdir" ]; then warn "$_me: you must specify a mount-point" return 1 fi debug "$_me: mount-point is ($devdir), ruleset is ($rs)" if ! mount -t devfs dev "$devdir"; then warn "$_me: Unable to mount devfs on $devdir" return 1 fi if [ -n "$rs" ]; then devfs_init_rulesets devfs_set_ruleset $rs $devdir devfs -m $devdir rule applyset fi return 0 } # devfs_mount_jail dir [ruleset] # Mounts a devfs file system appropriate for jails # on the directory dir. If ruleset is specified, the ruleset # it names will be used instead. If present, ruleset must # be the name of a ruleset as defined in a devfs.rules(5) file. # This function returns non-zero if an error occurs. # devfs_mount_jail() { local jdev rs _me jdev="$1" [ -n "$2" ] && rs=$2 || rs="devfsrules_jail" _me="devfs_mount_jail" devfs_init_rulesets if ! devfs_domount "$jdev" $rs; then warn "$_me: devfs was not mounted on $jdev" return 1 fi return 0 } # Provide a function for normalizing the mounting of memory # filesystems. This should allow the rest of the code here to remain # as close as possible between 5-current and 4-stable. # $1 = size # $2 = mount point # $3 = (optional) extra mdmfs flags mount_md() { if [ -n "$3" ]; then flags="$3" fi /sbin/mdmfs $flags -s $1 md $2 } # Code common to scripts that need to load a kernel module # if it isn't in the kernel yet. Syntax: # load_kld [-e regex] [-m module] file # where -e or -m chooses the way to check if the module # is already loaded: # regex is egrep'd in the output from `kldstat -v', # module is passed to `kldstat -m'. # The default way is as though `-m file' were specified. load_kld() { local _loaded _mod _opt _re while getopts "e:m:" _opt; do case "$_opt" in e) _re="$OPTARG" ;; m) _mod="$OPTARG" ;; *) err 3 'USAGE: load_kld [-e regex] [-m module] file' ;; esac done shift $(($OPTIND - 1)) if [ $# -ne 1 ]; then err 3 'USAGE: load_kld [-e regex] [-m module] file' fi _mod=${_mod:-$1} _loaded=false if [ -n "$_re" ]; then if kldstat -v | egrep -q -e "$_re"; then _loaded=true fi else if kldstat -q -m "$_mod"; then _loaded=true fi fi if ! $_loaded; then if ! kldload "$1"; then warn "Unable to load kernel module $1" return 1 else info "$1 kernel module loaded." fi else debug "load_kld: $1 kernel module already loaded." fi return 0 } # ltr str src dst # Change every $src in $str to $dst. # Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor # awk(1). ltr() { local _str _src _dst _out _com _str=$1 _src=$2 _dst=$3 _out="" IFS=${_src} for _com in ${_str}; do if [ -z "${_out}" ]; then _out="${_com}" else _out="${_out}${_dst}${_com}" fi done echo "${_out}" } # Creates a list of providers for GELI encryption. geli_make_list() { local devices devices2 local provider mountpoint type options rest # Create list of GELI providers from fstab. while read provider mountpoint type options rest ; do case ":${options}" in :*noauto*) noauto=yes ;; *) noauto=no ;; esac case ":${provider}" in :#*) continue ;; *.eli) # Skip swap devices. if [ "${type}" = "swap" -o "${options}" = "sw" -o "${noauto}" = "yes" ]; then continue fi devices="${devices} ${provider}" ;; esac done < /etc/fstab # Append providers from geli_devices. devices="${devices} ${geli_devices}" for provider in ${devices}; do provider=${provider%.eli} provider=${provider#/dev/} devices2="${devices2} ${provider}" done echo ${devices2} } # Find scripts in local_startup directories that use the old syntax # find_local_scripts_old () { zlist='' slist='' for dir in ${local_startup}; do if [ -d "${dir}" ]; then for file in ${dir}/[0-9]*.sh; do grep '^# PROVIDE:' $file >/dev/null 2>&1 && continue zlist="$zlist $file" done for file in ${dir}/[^0-9]*.sh; do grep '^# PROVIDE:' $file >/dev/null 2>&1 && continue slist="$slist $file" done fi done } find_local_scripts_new () { local_rc='' for dir in ${local_startup}; do if [ -d "${dir}" ]; then for file in `grep -l '^# PROVIDE:' ${dir}/* 2>/dev/null`; do case "$file" in *.sample) ;; *) if [ -x "$file" ]; then local_rc="${local_rc} ${file}" fi ;; esac done fi done } fi _rc_subr_loaded=: