etc/rc.subr

   1 # $NetBSD: rc.subr,v 1.66 2006/04/01 10:05:50 he Exp $
   2 # $FreeBSD$
   3 #
   4 # Copyright (c) 1997-2004 The NetBSD Foundation, Inc.
   5 # All rights reserved.
   6 #
   7 # This code is derived from software contributed to The NetBSD Foundation
   8 # by Luke Mewburn.
   9 #
  10 # Redistribution and use in source and binary forms, with or without
  11 # modification, are permitted provided that the following conditions
  12 # are met:
  13 # 1. Redistributions of source code must retain the above copyright
  14 #    notice, this list of conditions and the following disclaimer.
  15 # 2. Redistributions in binary form must reproduce the above copyright
  16 #    notice, this list of conditions and the following disclaimer in the
  17 #    documentation and/or other materials provided with the distribution.
  18 # 3. All advertising materials mentioning features or use of this software
  19 #    must display the following acknowledgement:
  20 #        This product includes software developed by the NetBSD
  21 #        Foundation, Inc. and its contributors.
  22 # 4. Neither the name of The NetBSD Foundation nor the names of its
  23 #    contributors may be used to endorse or promote products derived
  24 #    from this software without specific prior written permission.
  25 #
  26 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  27 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  28 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  29 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  30 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  31 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  32 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  33 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  34 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  35 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  36 # POSSIBILITY OF SUCH DAMAGE.
  37 #
  38 # rc.subr
  39 #       functions used by various rc scripts
  40 #
  41
  42 : ${rcvar_manpage:='rc.conf(5)'}
  43
  44 #
  45 #       Operating System dependent/independent variables
  46 #
  47
  48 if [ -z "${_rc_subr_loaded}" ]; then
  49
  50 _rc_subr_loaded="YES"
  51
  52 SYSCTL="/sbin/sysctl"
  53 SYSCTL_N="${SYSCTL} -n"
  54 CMD_OSTYPE="${SYSCTL_N} kern.ostype"
  55 OSTYPE=`${CMD_OSTYPE}`
  56 ID="/usr/bin/id"
  57 IDCMD="if [ -x $ID ]; then $ID -un; fi"
  58 PS="/bin/ps -ww"
  59 JID=`$PS -p $$ -o jid=`
  60
  61 case ${OSTYPE} in
  62 FreeBSD)
  63         SYSCTL_W="${SYSCTL}"
  64         ;;
  65 NetBSD)
  66         SYSCTL_W="${SYSCTL} -w"
  67         ;;
  68 esac
  69
  70 #
  71 #       functions
  72 #       ---------
  73
  74 #
  75 # set_rcvar base_var
  76 #       Set the variable name enabling a specific service.
  77 #       FreeBSD uses ${service}_enable, while NetBSD uses
  78 #       just the name of the service. For example:
  79 #       FreeBSD: sendmail_enable="YES"
  80 #       NetBSD : sendmail="YES"
  81 #       $1 - if $name is not the base to work of off, specify
  82 #            a different one
  83 #
  84 set_rcvar()
  85 {
  86         if [ -z "$1" ]; then
  87                 base_var=${name}
  88         else
  89                 base_var="$1"
  90         fi
  91
  92         case ${OSTYPE} in
  93         FreeBSD)
  94                 echo ${base_var}_enable
  95                 ;;
  96         NetBSD)
  97                 echo ${base_var}
  98                 ;;
  99         *)
 100                 echo 'XXX'
 101                 ;;
 102         esac
 103 }
 104
 105 #
 106 # force_depend script
 107 #       Force a service to start. Intended for use by services
 108 #       to resolve dependency issues. It is assumed the caller
 109 #       has check to make sure this call is necessary
 110 #       $1 - filename of script, in /etc/rc.d, to run
 111 #
 112 force_depend()
 113 {
 114         _depend="$1"
 115
 116         info "${name} depends on ${_depend}, which will be forced to start."
 117         if ! /etc/rc.d/${_depend} forcestart; then
 118                 warn "Unable to force ${_depend}. It may already be running."
 119                 return 1
 120         fi
 121         return 0
 122 }
 123
 124 #
 125 # checkyesno var
 126 #       Test $1 variable, and warn if not set to YES or NO.
 127 #       Return 0 if it's "yes" (et al), nonzero otherwise.
 128 #
 129 checkyesno()
 130 {
 131         eval _value=\$${1}
 132         debug "checkyesno: $1 is set to $_value."
 133         case $_value in
 134
 135                 #       "yes", "true", "on", or "1"
 136         [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
 137                 return 0
 138                 ;;
 139
 140                 #       "no", "false", "off", or "0"
 141         [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
 142                 return 1
 143                 ;;
 144         *)
 145                 warn "\$${1} is not set properly - see ${rcvar_manpage}."
 146                 return 1
 147                 ;;
 148         esac
 149 }
 150
 151 #
 152 # reverse_list list
 153 #       print the list in reverse order
 154 #
 155 reverse_list()
 156 {
 157         _revlist=
 158         for _revfile; do
 159                 _revlist="$_revfile $_revlist"
 160         done
 161         echo $_revlist
 162 }
 163
 164 #
 165 # mount_critical_filesystems type
 166 #       Go through the list of critical filesystems as provided in
 167 #       the rc.conf(5) variable $critical_filesystems_${type}, checking
 168 #       each one to see if it is mounted, and if it is not, mounting it.
 169 #
 170 mount_critical_filesystems()
 171 {
 172         eval _fslist=\$critical_filesystems_${1}
 173         for _fs in $_fslist; do
 174                 mount | (
 175                         _ismounted=false
 176                         while read what _on on _type type; do
 177                                 if [ $on = $_fs ]; then
 178                                         _ismounted=true
 179                                 fi
 180                         done
 181                         if $_ismounted; then
 182                                 :
 183                         else
 184                                 mount $_fs >/dev/null 2>&1
 185                         fi
 186                 )
 187         done
 188 }
 189
 190 #
 191 # check_pidfile pidfile procname [interpreter]
 192 #       Parses the first line of pidfile for a PID, and ensures
 193 #       that the process is running and matches procname.
 194 #       Prints the matching PID upon success, nothing otherwise.
 195 #       interpreter is optional; see _find_processes() for details.
 196 #
 197 check_pidfile()
 198 {
 199         _pidfile=$1
 200         _procname=$2
 201         _interpreter=$3
 202         if [ -z "$_pidfile" -o -z "$_procname" ]; then
 203                 err 3 'USAGE: check_pidfile pidfile procname [interpreter]'
 204         fi
 205         if [ ! -f $_pidfile ]; then
 206                 debug "pid file ($_pidfile): not readable."
 207                 return
 208         fi
 209         read _pid _junk < $_pidfile
 210         if [ -z "$_pid" ]; then
 211                 debug "pid file ($_pidfile): no pid in file."
 212                 return
 213         fi
 214         _find_processes $_procname ${_interpreter:-.} '-p '"$_pid"
 215 }
 216
 217 #
 218 # check_process procname [interpreter]
 219 #       Ensures that a process (or processes) named procname is running.
 220 #       Prints a list of matching PIDs.
 221 #       interpreter is optional; see _find_processes() for details.
 222 #
 223 check_process()
 224 {
 225         _procname=$1
 226         _interpreter=$2
 227         if [ -z "$_procname" ]; then
 228                 err 3 'USAGE: check_process procname [interpreter]'
 229         fi
 230         _find_processes $_procname ${_interpreter:-.} '-ax'
 231 }
 232
 233 #
 234 # _find_processes procname interpreter psargs
 235 #       Search for procname in the output of ps generated by psargs.
 236 #       Prints the PIDs of any matching processes, space separated.
 237 #
 238 #       If interpreter == ".", check the following variations of procname
 239 #       against the first word of each command:
 240 #               procname
 241 #               `basename procname`
 242 #               `basename procname` + ":"
 243 #               "(" + `basename procname` + ")"
 244 #               "[" + `basename procname` + "]"
 245 #
 246 #       If interpreter != ".", read the first line of procname, remove the
 247 #       leading #!, normalise whitespace, append procname, and attempt to
 248 #       match that against each command, either as is, or with extra words
 249 #       at the end.  As an alternative, to deal with interpreted daemons
 250 #       using perl, the basename of the interpreter plus a colon is also
 251 #       tried as the prefix to procname.
 252 #
 253 _find_processes()
 254 {
 255         if [ $# -ne 3 ]; then
 256                 err 3 'USAGE: _find_processes procname interpreter psargs'
 257         fi
 258         _procname=$1
 259         _interpreter=$2
 260         _psargs=$3
 261
 262         _pref=
 263         if [ $_interpreter != "." ]; then       # an interpreted script
 264                 read _interp < $_procname       # read interpreter name
 265                 _interp=${_interp#\#!}          # strip #!
 266                 set -- $_interp
 267                 if [ $_interpreter != $1 ]; then
 268                         warn "\$command_interpreter $_interpreter != $1"
 269                 fi
 270                 _interp="$* $_procname"         # cleanup spaces, add _procname
 271                 _interpbn=${1##*/}
 272                 _fp_args='_argv'
 273                 _fp_match='case "$_argv" in
 274                     ${_interp}|"${_interp} "*|"${_interpbn}: ${_procname}"*)'
 275         else                                    # a normal daemon
 276                 _procnamebn=${_procname##*/}
 277                 _fp_args='_arg0 _argv'
 278                 _fp_match='case "$_arg0" in
 279                     $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})"|"[${_procnamebn}]")'
 280         fi
 281
 282         _proccheck="\
 283                 $PS 2>/dev/null -o pid= -o jid= -o command= $_psargs"' |
 284                 while read _npid _jid '"$_fp_args"'; do
 285                         '"$_fp_match"'
 286                                 if [ "$JID" -eq "$_jid" ];
 287                                 then echo -n "$_pref$_npid";
 288                                 _pref=" ";
 289                                 fi
 290                                 ;;
 291                         esac
 292                 done'
 293
 294 #       debug "in _find_processes: proccheck is ($_proccheck)."
 295         eval $_proccheck
 296 }
 297
 298 #
 299 # wait_for_pids pid [pid ...]
 300 #       spins until none of the pids exist
 301 #
 302 wait_for_pids()
 303 {
 304         _list="$@"
 305         if [ -z "$_list" ]; then
 306                 return
 307         fi
 308         _prefix=
 309         while true; do
 310                 _nlist="";
 311                 for _j in $_list; do
 312                         if kill -0 $_j 2>/dev/null; then
 313                                 _nlist="${_nlist}${_nlist:+ }$_j"
 314                         fi
 315                 done
 316                 if [ -z "$_nlist" ]; then
 317                         break
 318                 fi
 319                 _list=$_nlist
 320                 echo -n ${_prefix:-"Waiting for PIDS: "}$_list
 321                 _prefix=", "
 322                 sleep 2
 323         done
 324         if [ -n "$_prefix" ]; then
 325                 echo "."
 326         fi
 327 }
 328
 329 #
 330 # run_rc_command argument
 331 #       Search for argument in the list of supported commands, which is:
 332 #               "start stop restart rcvar status poll ${extra_commands}"
 333 #       If there's a match, run ${argument}_cmd or the default method
 334 #       (see below).
 335 #
 336 #       If argument has a given prefix, then change the operation as follows:
 337 #               Prefix  Operation
 338 #               ------  ---------
 339 #               fast    Skip the pid check, and set rc_fast=yes
 340 #               force   Set ${rcvar} to YES, and set rc_force=yes
 341 #               one     Set ${rcvar} to YES
 342 #
 343 #       The following globals are used:
 344 #
 345 #       Name            Needed  Purpose
 346 #       ----            ------  -------
 347 #       name            y       Name of script.
 348 #
 349 #       command         n       Full path to command.
 350 #                               Not needed if ${rc_arg}_cmd is set for
 351 #                               each keyword.
 352 #
 353 #       command_args    n       Optional args/shell directives for command.
 354 #
 355 #       command_interpreter n   If not empty, command is interpreted, so
 356 #                               call check_{pidfile,process}() appropriately.
 357 #
 358 #       extra_commands  n       List of extra commands supported.
 359 #
 360 #       pidfile         n       If set, use check_pidfile $pidfile $command,
 361 #                               otherwise use check_process $command.
 362 #                               In either case, only check if $command is set.
 363 #
 364 #       procname        n       Process name to check for instead of $command.
 365 #
 366 #       rcvar           n       This is checked with checkyesno to determine
 367 #                               if the action should be run.
 368 #
 369 #       ${name}_program n       Full path to command.
 370 #                               Meant to be used in /etc/rc.conf to override
 371 #                               ${command}.
 372 #
 373 #       ${name}_chroot  n       Directory to chroot to before running ${command}
 374 #                               Requires /usr to be mounted.
 375 #
 376 #       ${name}_chdir   n       Directory to cd to before running ${command}
 377 #                               (if not using ${name}_chroot).
 378 #
 379 #       ${name}_flags   n       Arguments to call ${command} with.
 380 #                               NOTE:   $flags from the parent environment
 381 #                                       can be used to override this.
 382 #
 383 #       ${name}_nice    n       Nice level to run ${command} at.
 384 #
 385 #       ${name}_user    n       User to run ${command} as, using su(1) if not
 386 #                               using ${name}_chroot.
 387 #                               Requires /usr to be mounted.
 388 #
 389 #       ${name}_group   n       Group to run chrooted ${command} as.
 390 #                               Requires /usr to be mounted.
 391 #
 392 #       ${name}_groups  n       Comma separated list of supplementary groups
 393 #                               to run the chrooted ${command} with.
 394 #                               Requires /usr to be mounted.
 395 #
 396 #       ${rc_arg}_cmd   n       If set, use this as the method when invoked;
 397 #                               Otherwise, use default command (see below)
 398 #
 399 #       ${rc_arg}_precmd n      If set, run just before performing the
 400 #                               ${rc_arg}_cmd method in the default
 401 #                               operation (i.e, after checking for required
 402 #                               bits and process (non)existence).
 403 #                               If this completes with a non-zero exit code,
 404 #                               don't run ${rc_arg}_cmd.
 405 #
 406 #       ${rc_arg}_postcmd n     If set, run just after performing the
 407 #                               ${rc_arg}_cmd method, if that method
 408 #                               returned a zero exit code.
 409 #
 410 #       required_dirs   n       If set, check for the existence of the given
 411 #                               directories before running the default
 412 #                               (re)start command.
 413 #
 414 #       required_files  n       If set, check for the readability of the given
 415 #                               files before running the default (re)start
 416 #                               command.
 417 #
 418 #       required_vars   n       If set, perform checkyesno on each of the
 419 #                               listed variables before running the default
 420 #                               (re)start command.
 421 #
 422 #       Default behaviour for a given argument, if no override method is
 423 #       provided:
 424 #
 425 #       Argument        Default behaviour
 426 #       --------        -----------------
 427 #       start           if !running && checkyesno ${rcvar}
 428 #                               ${command}
 429 #
 430 #       stop            if ${pidfile}
 431 #                               rc_pid=$(check_pidfile $pidfile $command)
 432 #                       else
 433 #                               rc_pid=$(check_process $command)
 434 #                       kill $sig_stop $rc_pid
 435 #                       wait_for_pids $rc_pid
 436 #                       ($sig_stop defaults to TERM.)
 437 #
 438 #       reload          Similar to stop, except use $sig_reload instead,
 439 #                       and doesn't wait_for_pids.
 440 #                       $sig_reload defaults to HUP.
 441 #                       Note that `reload' isn't provided by default,
 442 #                       it should be enabled via $extra_commands.
 443 #
 444 #       restart         Run `stop' then `start'.
 445 #
 446 #       status          Show if ${command} is running, etc.
 447 #
 448 #       poll            Wait for ${command} to exit.
 449 #
 450 #       rcvar           Display what rc.conf variable is used (if any).
 451 #
 452 #       Variables available to methods, and after run_rc_command() has
 453 #       completed:
 454 #
 455 #       Variable        Purpose
 456 #       --------        -------
 457 #       rc_arg          Argument to command, after fast/force/one processing
 458 #                       performed
 459 #
 460 #       rc_flags        Flags to start the default command with.
 461 #                       Defaults to ${name}_flags, unless overridden
 462 #                       by $flags from the environment.
 463 #                       This variable may be changed by the precmd method.
 464 #
 465 #       rc_pid          PID of command (if appropriate)
 466 #
 467 #       rc_fast         Not empty if "fast" was provided (q.v.)
 468 #
 469 #       rc_force        Not empty if "force" was provided (q.v.)
 470 #
 471 #
 472 run_rc_command()
 473 {
 474         _return=0
 475         rc_arg=$1
 476         if [ -z "$name" ]; then
 477                 err 3 'run_rc_command: $name is not set.'
 478         fi
 479
 480         # Don't repeat the first argument when passing additional command-
 481         # line arguments to the command subroutines.
 482         #
 483         shift 1
 484         rc_extra_args="$*"
 485
 486         _rc_prefix=
 487         case "$rc_arg" in
 488         fast*)                          # "fast" prefix; don't check pid
 489                 rc_arg=${rc_arg#fast}
 490                 rc_fast=yes
 491                 ;;
 492         force*)                         # "force prefix; always run
 493                 rc_force=yes
 494                 _rc_prefix=force
 495                 rc_arg=${rc_arg#${_rc_prefix}}
 496                 if [ -n "${rcvar}" ]; then
 497                         eval ${rcvar}=YES
 498                 fi
 499                 ;;
 500         one*)                           # "one" prefix; set ${rcvar}=yes
 501                 _rc_prefix=one
 502                 rc_arg=${rc_arg#${_rc_prefix}}
 503                 if [ -n "${rcvar}" ]; then
 504                         eval ${rcvar}=YES
 505                 fi
 506                 ;;
 507         esac
 508
 509         eval _override_command=\$${name}_program
 510         command=${command:+${_override_command:-$command}}
 511
 512         _keywords="start stop restart rcvar $extra_commands"
 513         rc_pid=
 514         _pidcmd=
 515         _procname=${procname:-${command}}
 516
 517                                         # setup pid check command
 518         if [ -n "$_procname" ]; then
 519                 if [ -n "$pidfile" ]; then
 520                         _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')'
 521                 else
 522                         _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')'
 523                 fi
 524                 if [ -n "$_pidcmd" ]; then
 525                         _keywords="${_keywords} status poll"
 526                 fi
 527         fi
 528
 529         if [ -z "$rc_arg" ]; then
 530                 rc_usage $_keywords
 531         fi
 532
 533         if [ -n "$flags" ]; then        # allow override from environment
 534                 rc_flags=$flags
 535         else
 536                 eval rc_flags=\$${name}_flags
 537         fi
 538         eval _chdir=\$${name}_chdir     _chroot=\$${name}_chroot \
 539             _nice=\$${name}_nice        _user=\$${name}_user \
 540             _group=\$${name}_group      _groups=\$${name}_groups
 541
 542         if [ -n "$_user" ]; then        # unset $_user if running as that user
 543                 if [ "$_user" = "$(eval $IDCMD)" ]; then
 544                         unset _user
 545                 fi
 546         fi
 547
 548                                         # if ${rcvar} is set, and $1 is not
 549                                         # "rcvar", then run
 550                                         #       checkyesno ${rcvar}
 551                                         # and return if that failed
 552                                         #
 553         if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" ]; then
 554                 if ! checkyesno ${rcvar}; then
 555                         return 0
 556                 fi
 557         fi
 558
 559         eval $_pidcmd                   # determine the pid if necessary
 560
 561         for _elem in $_keywords; do
 562                 if [ "$_elem" != "$rc_arg" ]; then
 563                         continue
 564                 fi
 565
 566                                         # if there's a custom ${XXX_cmd},
 567                                         # run that instead of the default
 568                                         #
 569                 eval _cmd=\$${rc_arg}_cmd _precmd=\$${rc_arg}_precmd \
 570                     _postcmd=\$${rc_arg}_postcmd
 571                 if [ -n "$_cmd" ]; then
 572                                         # if the precmd failed and force
 573                                         # isn't set, exit
 574                                         #
 575                         if [ -n "$_precmd" ]; then
 576                                 debug "run_rc_command: evaluating ${_precmd}()."
 577                                 eval $_precmd $rc_extra_args
 578                                 _return=$?
 579                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 580                                     return 1
 581                         fi
 582
 583                         if [ -n "$_cmd" ]; then
 584                                 debug "run_rc_command: evaluating ${_cmd}()."
 585                                 eval $_cmd $rc_extra_args
 586                                 _return=$?
 587                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 588                                     return 1
 589                         fi
 590
 591                         if [ -n "$_postcmd" ]; then
 592                                 debug "run_rc_command: evaluating ${_postcmd}()."
 593                                  eval $_postcmd $rc_extra_args
 594                                 _return=$?
 595                         fi
 596                         return $_return
 597                 fi
 598
 599                 case "$rc_arg" in       # default operations...
 600
 601                 status)
 602                         if [ -n "$rc_pid" ]; then
 603                                 echo "${name} is running as pid $rc_pid."
 604                         else
 605                                 echo "${name} is not running."
 606                                 return 1
 607                         fi
 608                         ;;
 609
 610                 start)
 611                         if [ -z "$rc_fast" -a -n "$rc_pid" ]; then
 612                                 echo 1>&2 "${name} already running? (pid=$rc_pid)."
 613                                 return 1
 614                         fi
 615
 616                         if [ ! -x ${_chroot}${command} ]; then
 617                                 warn "run_rc_command: cannot run $command"
 618                                 return 1
 619                         fi
 620
 621                                         # check for required variables,
 622                                         # directories, and files
 623                                         #
 624                         for _f in $required_vars; do
 625                                 if ! checkyesno $_f; then
 626                                         warn "\$${_f} is not enabled."
 627                                         if [ -z "$rc_force" ]; then
 628                                                 return 1
 629                                         fi
 630                                 fi
 631                         done
 632                         for _f in $required_dirs; do
 633                                 if [ ! -d "${_f}/." ]; then
 634                                         warn "${_f} is not a directory."
 635                                         if [ -z "$rc_force" ]; then
 636                                                 return 1
 637                                         fi
 638                                 fi
 639                         done
 640                         for _f in $required_files; do
 641                                 if [ ! -r "${_f}" ]; then
 642                                         warn "${_f} is not readable."
 643                                         if [ -z "$rc_force" ]; then
 644                                                 return 1
 645                                         fi
 646                                 fi
 647                         done
 648
 649                                         # if the precmd failed and force
 650                                         # isn't set, exit
 651                                         #
 652                         if [ -n "${_precmd}" ]; then
 653                                 debug "run_rc_command: evaluating ${_precmd}()."
 654                                 eval $_precmd
 655                                 _return=$?
 656                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 657                                     return 1
 658                         fi
 659
 660                                         # setup the full command to run
 661                                         #
 662                         echo "Starting ${name}."
 663                         if [ -n "$_chroot" ]; then
 664                                 _doit="\
 665 ${_nice:+nice -n $_nice }\
 666 chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\
 667 $_chroot $command $rc_flags $command_args"
 668                         else
 669                                 _doit="\
 670 ${_chdir:+cd $_chdir && }\
 671 $command $rc_flags $command_args"
 672                                 if [ -n "$_user" ]; then
 673                                     _doit="su -m $_user -c 'sh -c \"$_doit\"'"
 674                                 fi
 675                                 if [ -n "$_nice" ]; then
 676                                         if [ -z "$_user" ]; then
 677                                                 _doit="sh -c \"$_doit\""
 678                                         fi
 679                                         _doit="nice -n $_nice $_doit"
 680                                 fi
 681                         fi
 682
 683                                         # run the full command;
 684                                         # if the cmd failed and force
 685                                         # isn't set, exit
 686                                         #
 687                         debug "run_rc_command: _doit: $_doit"
 688                         eval $_doit
 689                         _return=$?
 690                         [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1
 691
 692                                         # finally, run postcmd
 693                                         #
 694                         if [ -n "${_postcmd}" ]; then
 695                                 debug "run_rc_command: evaluating ${_postcmd}()."
 696                                 eval $_postcmd
 697                         fi
 698                         ;;
 699
 700                 stop)
 701                         if [ -z "$rc_pid" ]; then
 702                                 [ -n "$rc_fast" ] && return 0
 703                                 if [ -n "$pidfile" ]; then
 704                                         echo 1>&2 \
 705                                     "${name} not running? (check $pidfile)."
 706                                 else
 707                                         echo 1>&2 "${name} not running?"
 708                                 fi
 709                                 return 1
 710                         fi
 711
 712                                         # if the precmd failed and force
 713                                         # isn't set, exit
 714                                         #
 715                         if [ -n "$_precmd" ]; then
 716                                 eval $_precmd
 717                                 _return=$?
 718                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 719                                     return 1
 720                         fi
 721
 722                                         # send the signal to stop
 723                                         #
 724                         echo "Stopping ${name}."
 725                         _doit="kill -${sig_stop:-TERM} $rc_pid"
 726                         if [ -n "$_user" ]; then
 727                                 _doit="su -m $_user -c 'sh -c \"$_doit\"'"
 728                         fi
 729
 730                                         # if the stop cmd failed and force
 731                                         # isn't set, exit
 732                                         #
 733                         eval $_doit
 734                         _return=$?
 735                         [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1
 736
 737                                         # wait for the command to exit,
 738                                         # and run postcmd.
 739                         wait_for_pids $rc_pid
 740                         if [ -n "$_postcmd" ]; then
 741                                 eval $_postcmd
 742                                 _return=$?
 743                         fi
 744                         ;;
 745
 746                 reload)
 747                         if [ -z "$rc_pid" ]; then
 748                                 if [ -n "$pidfile" ]; then
 749                                         echo 1>&2 \
 750                                     "${name} not running? (check $pidfile)."
 751                                 else
 752                                         echo 1>&2 "${name} not running?"
 753                                 fi
 754                                 return 1
 755                         fi
 756                         echo "Reloading ${name} config files."
 757                         if [ -n "$_precmd" ]; then
 758                                 eval $_precmd
 759                                 _return=$?
 760                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 761                                     return 1
 762                         fi
 763                         _doit="kill -${sig_reload:-HUP} $rc_pid"
 764                         if [ -n "$_user" ]; then
 765                                 _doit="su -m $_user -c 'sh -c \"$_doit\"'"
 766                         fi
 767                         eval $_doit
 768                         _return=$?
 769                         [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1
 770                         if [ -n "$_postcmd" ]; then
 771                                 eval $_postcmd
 772                                 _return=$?
 773                         fi
 774                         ;;
 775
 776                 restart)
 777                         if [ -n "$_precmd" ]; then
 778                                 eval $_precmd $rc_extra_args
 779                                 _return=$?
 780                                 [ $_return -ne 0 ] && [ -z "$rc_force" ] &&
 781                                     return 1
 782                         fi
 783                                         # prevent restart being called more
 784                                         # than once by any given script
 785                                         #
 786                         if ${_rc_restart_done:-false}; then
 787                                 return 0
 788                         fi
 789                         _rc_restart_done=true
 790
 791                         # run stop in a subshell to keep variables for start
 792                         ( run_rc_command ${_rc_prefix}stop $rc_extra_args )
 793                         run_rc_command ${_rc_prefix}start $rc_extra_args
 794
 795                         if [ -n "$_postcmd" ]; then
 796                                 eval $_postcmd $rc_extra_args
 797                                 _return=$?
 798                         fi
 799                         ;;
 800
 801                 poll)
 802                         if [ -n "$rc_pid" ]; then
 803                                 wait_for_pids $rc_pid
 804                         fi
 805                         ;;
 806
 807                 rcvar)
 808                         echo "# $name"
 809                         if [ -n "$rcvar" ]; then
 810                                 if checkyesno ${rcvar}; then
 811                                         echo "\$${rcvar}=YES"
 812                                 else
 813                                         echo "\$${rcvar}=NO"
 814                                 fi
 815                         fi
 816                         ;;
 817
 818                 *)
 819                         rc_usage $_keywords
 820                         ;;
 821
 822                 esac
 823                 return $_return
 824         done
 825
 826         echo 1>&2 "$0: unknown directive '$rc_arg'."
 827         rc_usage $_keywords
 828         # not reached
 829 }
 830
 831 #
 832 # run_rc_script file arg
 833 #       Start the script `file' with `arg', and correctly handle the
 834 #       return value from the script.  If `file' ends with `.sh', it's
 835 #       sourced into the current environment.  If `file' appears to be
 836 #       a backup or scratch file, ignore it.  Otherwise if it's
 837 #       executable run as a child process.
 838 #
 839 run_rc_script()
 840 {
 841         _file=$1
 842         _arg=$2
 843         if [ -z "$_file" -o -z "$_arg" ]; then
 844                 err 3 'USAGE: run_rc_script file arg'
 845         fi
 846
 847         unset   name command command_args command_interpreter \
 848                 extra_commands pidfile procname \
 849                 rcvar required_dirs required_files required_vars
 850         eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd
 851
 852         case "$_file" in
 853         /etc/rc.d/*.sh)                 # run in current shell
 854                 set $_arg; . $_file
 855                 ;;
 856         *[~#]|*.OLD|*.bak|*.orig|*,v)   # scratch file; skip
 857                 warn "Ignoring scratch file $_file"
 858                 ;;
 859         *)                              # run in subshell
 860                 if [ -x $_file ]; then
 861                         if [ -n "$rc_fast_and_loose" ]; then
 862                                 set $_arg; . $_file
 863                         else
 864                                 ( trap "echo Script $_file interrupted; kill -QUIT $$" 3
 865                                   trap "echo Script $_file interrupted; exit 1" 2
 866                                   set $_arg; . $_file )
 867                         fi
 868                 fi
 869                 ;;
 870         esac
 871 }
 872
 873 #
 874 # load_rc_config name
 875 #       Source in the configuration file for a given name.
 876 #
 877 load_rc_config()
 878 {
 879         _name=$1
 880         if [ -z "$_name" ]; then
 881                 err 3 'USAGE: load_rc_config name'
 882         fi
 883
 884         if ${_rc_conf_loaded:-false}; then
 885                 :
 886         else
 887                 if [ -r /etc/defaults/rc.conf ]; then
 888                         debug "Sourcing /etc/defaults/rc.conf"
 889                         . /etc/defaults/rc.conf
 890                         source_rc_confs
 891                 elif [ -r /etc/rc.conf ]; then
 892                         debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)."
 893                         . /etc/rc.conf
 894                 fi
 895                 _rc_conf_loaded=true
 896         fi
 897         if [ -f /etc/rc.conf.d/"$_name" ]; then
 898                 debug "Sourcing /etc/rc.conf.d/${_name}"
 899                 . /etc/rc.conf.d/"$_name"
 900         fi
 901
 902         # XXX - Deprecated variable name support
 903         #
 904         case ${OSTYPE} in
 905         FreeBSD)
 906                 [ -n "$portmap_enable" ] && rpcbind_enable="$portmap_enable"
 907                 [ -n "$portmap_program" ] && rpcbind_program="$portmap_program"
 908                 [ -n "$portmap_flags" ] && rpcbind_flags="$portmap_flags"
 909                 [ -n "$single_mountd_enable" ] && mountd_enable="$single_mountd_enable"
 910                 [ -n "$xntpd_enable" ] && ntpd_enable="$xntpd_enable"
 911                 [ -n "$xntpd_program" ] && ntpd_program="$xntpd_program"
 912                 [ -n "$xntpd_flags" ] && ntpd_flags="$xntpd_flags"
 913                 [ -n "$dhcp_program" ] && dhclient_program="$dhcp_program"
 914                 [ -n "$dhcp_flags" ] && dhclient_flags="$dhcp_flags"
 915                 ;;
 916         esac
 917 }
 918
 919 #
 920 # load_rc_config_var name var
 921 #       Read the rc.conf(5) var for name and set in the
 922 #       current shell, using load_rc_config in a subshell to prevent
 923 #       unwanted side effects from other variable assignments.
 924 #
 925 load_rc_config_var()
 926 {
 927         if [ $# -ne 2 ]; then
 928                 err 3 'USAGE: load_rc_config_var name var'
 929         fi
 930         eval $(eval '(
 931                 load_rc_config '$1' >/dev/null;
 932                 if [ -n "${'$2'}" -o "${'$2'-UNSET}" != "UNSET" ]; then
 933                         echo '$2'=\'\''${'$2'}\'\'';
 934                 fi
 935         )' )
 936 }
 937
 938 #
 939 # rc_usage commands
 940 #       Print a usage string for $0, with `commands' being a list of
 941 #       valid commands.
 942 #
 943 rc_usage()
 944 {
 945         echo -n 1>&2 "Usage: $0 [fast|force|one]("
 946
 947         _sep=
 948         for _elem; do
 949                 echo -n 1>&2 "$_sep$_elem"
 950                 _sep="|"
 951         done
 952         echo 1>&2 ")"
 953         exit 1
 954 }
 955
 956 #
 957 # err exitval message
 958 #       Display message to stderr and log to the syslog, and exit with exitval.
 959 #
 960 err()
 961 {
 962         exitval=$1
 963         shift
 964
 965         if [ -x /usr/bin/logger ]; then
 966                 logger "$0: ERROR: $*"
 967         fi
 968         echo 1>&2 "$0: ERROR: $*"
 969         exit $exitval
 970 }
 971
 972 #
 973 # warn message
 974 #       Display message to stderr and log to the syslog.
 975 #
 976 warn()
 977 {
 978         if [ -x /usr/bin/logger ]; then
 979                 logger "$0: WARNING: $*"
 980         fi
 981         echo 1>&2 "$0: WARNING: $*"
 982 }
 983
 984 #
 985 # info message
 986 #       Display informational message to stdout and log to syslog.
 987 #
 988 info()
 989 {
 990         case ${rc_info} in
 991         [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
 992                 if [ -x /usr/bin/logger ]; then
 993                         logger "$0: INFO: $*"
 994                 fi
 995                 echo "$0: INFO: $*"
 996                 ;;
 997         esac
 998 }
 999
1000 #
1001 # debug message
1002 #       If debugging is enabled in rc.conf output message to stderr.
1003 #       BEWARE that you don't call any subroutine that itself calls this
1004 #       function.
1005 #
1006 debug()
1007 {
1008         case ${rc_debug} in
1009         [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
1010                 if [ -x /usr/bin/logger ]; then
1011                         logger "$0: DEBUG: $*"
1012                 fi
1013                 echo 1>&2 "$0: DEBUG: $*"
1014                 ;;
1015         esac
1016 }
1017
1018 #
1019 # backup_file action file cur backup
1020 #       Make a backup copy of `file' into `cur', and save the previous
1021 #       version of `cur' as `backup' or use rcs for archiving.
1022 #
1023 #       This routine checks the value of the backup_uses_rcs variable,
1024 #       which can be either YES or NO.
1025 #
1026 #       The `action' keyword can be one of the following:
1027 #
1028 #       add             `file' is now being backed up (and is possibly
1029 #                       being reentered into the backups system).  `cur'
1030 #                       is created and RCS files, if necessary, are
1031 #                       created as well.
1032 #
1033 #       update          `file' has changed and needs to be backed up.
1034 #                       If `cur' exists, it is copied to to `back' or
1035 #                       checked into RCS (if the repository file is old),
1036 #                       and then `file' is copied to `cur'.  Another RCS
1037 #                       check in done here if RCS is being used.
1038 #
1039 #       remove          `file' is no longer being tracked by the backups
1040 #                       system.  If RCS is not being used, `cur' is moved
1041 #                       to `back', otherwise an empty file is checked in,
1042 #                       and then `cur' is removed.
1043 #
1044 #
1045 backup_file()
1046 {
1047         _action=$1
1048         _file=$2
1049         _cur=$3
1050         _back=$4
1051
1052         if checkyesno backup_uses_rcs; then
1053                 _msg0="backup archive"
1054                 _msg1="update"
1055
1056                 # ensure that history file is not locked
1057                 if [ -f $_cur,v ]; then
1058                         rcs -q -u -U -M $_cur
1059                 fi
1060
1061                 # ensure after switching to rcs that the
1062                 # current backup is not lost
1063                 if [ -f $_cur ]; then
1064                         # no archive, or current newer than archive
1065                         if [ ! -f $_cur,v -o $_cur -nt $_cur,v ]; then
1066                                 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1067                                 rcs -q -kb -U $_cur
1068                                 co -q -f -u $_cur
1069                         fi
1070                 fi
1071
1072                 case $_action in
1073                 add|update)
1074                         cp -p $_file $_cur
1075                         ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1076                         rcs -q -kb -U $_cur
1077                         co -q -f -u $_cur
1078                         chown root:wheel $_cur $_cur,v
1079                         ;;
1080                 remove)
1081                         cp /dev/null $_cur
1082                         ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1083                         rcs -q -kb -U $_cur
1084                         chown root:wheel $_cur $_cur,v
1085                         rm $_cur
1086                         ;;
1087                 esac
1088         else
1089                 case $_action in
1090                 add|update)
1091                         if [ -f $_cur ]; then
1092                                 cp -p $_cur $_back
1093                         fi
1094                         cp -p $_file $_cur
1095                         chown root:wheel $_cur
1096                         ;;
1097                 remove)
1098                         mv -f $_cur $_back
1099                         ;;
1100                 esac
1101         fi
1102 }
1103
1104 # make_symlink src link
1105 #       Make a symbolic link 'link' to src from basedir. If the
1106 #       directory in which link is to be created does not exist
1107 #       a warning will be displayed and an error will be returned.
1108 #       Returns 0 on sucess, 1 otherwise.
1109 #
1110 make_symlink()
1111 {
1112         local src link linkdir _me
1113         src="$1"
1114         link="$2"
1115         linkdir="`dirname $link`"
1116         _me="make_symlink()"
1117
1118         if [ -z "$src" -o -z "$link" ]; then
1119                 warn "$_me: requires two arguments."
1120                 return 1
1121         fi
1122         if [ ! -d "$linkdir" ]; then
1123                 warn "$_me: the directory $linkdir does not exist."
1124                 return 1
1125         fi
1126         if ! ln -sf $src $link; then
1127                 warn "$_me: unable to make a symbolic link from $link to $src"
1128                 return 1
1129         fi
1130         return 0
1131 }
1132
1133 # devfs_rulesets_from_file file
1134 #       Reads a set of devfs commands from file, and creates
1135 #       the specified rulesets with their rules. Returns non-zero
1136 #       if there was an error.
1137 #
1138 devfs_rulesets_from_file()
1139 {
1140         local file _err _me
1141         file="$1"
1142         _me="devfs_rulesets_from_file"
1143         _err=0
1144
1145         if [ -z "$file" ]; then
1146                 warn "$_me: you must specify a file"
1147                 return 1
1148         fi
1149         if [ ! -e "$file" ]; then
1150                 debug "$_me: no such file ($file)"
1151                 return 0
1152         fi
1153         debug "reading rulesets from file ($file)"
1154         { while read line
1155         do
1156                 case $line in
1157                 \#*)
1158                         continue
1159                         ;;
1160                 \[*\]*)
1161                         rulenum=`expr "$line" : "\[.*=\([0-9]*\)\]"`
1162                         if [ -z "$rulenum" ]; then
1163                                 warn "$_me: cannot extract rule number ($line)"
1164                                 _err=1
1165                                 break
1166                         fi
1167                         rulename=`expr "$line" : "\[\(.*\)=[0-9]*\]"`
1168                         if [ -z "$rulename" ]; then
1169                                 warn "$_me: cannot extract rule name ($line)"
1170                                 _err=1
1171                                 break;
1172                         fi
1173                         eval $rulename=\$rulenum
1174                         debug "found ruleset: $rulename=$rulenum"
1175                         if ! /sbin/devfs rule -s $rulenum delset; then
1176                                 _err=1
1177                                 break
1178                         fi
1179                         ;;
1180                 *)
1181                         rulecmd="${line%%"\#*"}"
1182                         # evaluate the command incase it includes
1183                         # other rules
1184                         if [ -n "$rulecmd" ]; then
1185                                 debug "adding rule ($rulecmd)"
1186                                 if ! eval /sbin/devfs rule -s $rulenum $rulecmd
1187                                 then
1188                                         _err=1
1189                                         break
1190                                 fi
1191                         fi
1192                         ;;
1193                 esac
1194                 if [ $_err -ne 0 ]; then
1195                         debug "error in $_me"
1196                         break
1197                 fi
1198         done } < $file
1199         return $_err
1200 }
1201
1202 # devfs_init_rulesets
1203 #       Initializes rulesets from configuration files. Returns
1204 #       non-zero if there was an error.
1205 #
1206 devfs_init_rulesets()
1207 {
1208         local file _me
1209         _me="devfs_init_rulesets"
1210
1211         # Go through this only once
1212         if [ -n "$devfs_rulesets_init" ]; then
1213                 debug "$_me: devfs rulesets already initialized"
1214                 return
1215         fi
1216         for file in $devfs_rulesets; do
1217                 devfs_rulesets_from_file $file || return 1
1218         done
1219         devfs_rulesets_init=1
1220         debug "$_me: devfs rulesets initialized"
1221         return 0
1222 }
1223
1224 # devfs_set_ruleset ruleset [dir]
1225 #       Sets the default ruleset of dir to ruleset. The ruleset argument
1226 #       must be a ruleset name as specified in devfs.rules(5) file.
1227 #       Returns non-zero if it could not set it successfully.
1228 #
1229 devfs_set_ruleset()
1230 {
1231         local devdir rs _me
1232         [ -n "$1" ] && eval rs=\$$1 || rs=
1233         [ -n "$2" ] && devdir="-m "$2"" || devdir=
1234         _me="devfs_set_ruleset"
1235
1236         if [ -z "$rs" ]; then
1237                 warn "$_me: you must specify a ruleset number"
1238                 return 1
1239         fi
1240         debug "$_me: setting ruleset ($rs) on mount-point (${devdir#-m })"
1241         if ! /sbin/devfs $devdir ruleset $rs; then
1242                 warn "$_me: unable to set ruleset $rs to ${devdir#-m }"
1243                 return 1
1244         fi
1245         return 0
1246 }
1247
1248 # devfs_apply_ruleset ruleset [dir]
1249 #       Apply ruleset number $ruleset to the devfs mountpoint $dir.
1250 #       The ruleset argument must be a ruleset name as specified
1251 #       in a devfs.rules(5) file.  Returns 0 on success or non-zero
1252 #       if it could not apply the ruleset.
1253 #
1254 devfs_apply_ruleset()
1255 {
1256         local devdir rs _me
1257         [ -n "$1" ] && eval rs=\$$1 || rs=
1258         [ -n "$2" ] && devdir="-m "$2"" || devdir=
1259         _me="devfs_apply_ruleset"
1260
1261         if [ -z "$rs" ]; then
1262                 warn "$_me: you must specify a ruleset"
1263                 return 1
1264         fi
1265         debug "$_me: applying ruleset ($rs) to mount-point (${devdir#-m })"
1266         if ! /sbin/devfs $devdir rule -s $rs applyset; then
1267                 warn "$_me: unable to apply ruleset $rs to ${devdir#-m }"
1268                 return 1
1269         fi
1270         return 0
1271 }
1272
1273 # devfs_domount dir [ruleset]
1274 #       Mount devfs on dir. If ruleset is specified it is set
1275 #       on the mount-point. It must also be a ruleset name as specified
1276 #       in a devfs.rules(5) file. Returns 0 on success.
1277 #
1278 devfs_domount()
1279 {
1280         local devdir rs _me
1281         devdir="$1"
1282         [ -n "$2" ] && rs=$2 || rs=
1283         _me="devfs_domount()"
1284
1285         if [ -z "$devdir" ]; then
1286                 warn "$_me: you must specify a mount-point"
1287                 return 1
1288         fi
1289         debug "$_me: mount-point is ($devdir), ruleset is ($rs)"
1290         if ! mount -t devfs dev "$devdir"; then
1291                 warn "$_me: Unable to mount devfs on $devdir"
1292                 return 1
1293         fi
1294         if [ -n "$rs" ]; then
1295                 devfs_init_rulesets
1296                 devfs_set_ruleset $rs $devdir
1297                 devfs -m $devdir rule applyset
1298         fi
1299         return 0
1300 }
1301
1302 # devfs_mount_jail dir [ruleset]
1303 #       Mounts a devfs file system appropriate for jails
1304 #       on the directory dir. If ruleset is specified, the ruleset
1305 #       it names will be used instead.  If present, ruleset must
1306 #       be the name of a ruleset as defined in a devfs.rules(5) file.
1307 #       This function returns non-zero if an error occurs.
1308 #
1309 devfs_mount_jail()
1310 {
1311         local jdev rs _me
1312         jdev="$1"
1313         [ -n "$2" ] && rs=$2 || rs="devfsrules_jail"
1314         _me="devfs_mount_jail"
1315
1316         devfs_init_rulesets
1317         if ! devfs_domount "$jdev" $rs; then
1318                 warn "$_me: devfs was not mounted on $jdev"
1319                 return 1
1320         fi
1321         return 0
1322 }
1323
1324 # Provide a function for normalizing the mounting of memory
1325 # filesystems.  This should allow the rest of the code here to remain
1326 # as close as possible between 5-current and 4-stable.
1327 #   $1 = size
1328 #   $2 = mount point
1329 #   $3 = (optional) extra mdmfs flags
1330 mount_md()
1331 {
1332         if [ -n "$3" ]; then
1333                 flags="$3"
1334         fi
1335         /sbin/mdmfs $flags -s $1 md $2
1336 }
1337
1338 # Code common to scripts that need to load a kernel module
1339 # if it isn't in the kernel yet. Syntax:
1340 #   load_kld [-e regex] [-m module] file
1341 # where -e or -m chooses the way to check if the module
1342 # is already loaded:
1343 #   regex is egrep'd in the output from `kldstat -v',
1344 #   module is passed to `kldstat -m'.
1345 # The default way is as though `-m file' were specified.
1346 load_kld()
1347 {
1348         local _loaded _mod _opt _re
1349
1350         while getopts "e:m:" _opt; do
1351                 case "$_opt" in
1352                 e) _re="$OPTARG" ;;
1353                 m) _mod="$OPTARG" ;;
1354                 *) err 3 'USAGE: load_kld [-e regex] [-m module] file' ;;
1355                 esac
1356         done
1357         shift $(($OPTIND - 1))
1358         if [ $# -ne 1 ]; then
1359                 err 3 'USAGE: load_kld [-e regex] [-m module] file'
1360         fi
1361         _mod=${_mod:-$1}
1362         _loaded=false
1363         if [ -n "$_re" ]; then
1364                 if kldstat -v | egrep -q -e "$_re"; then
1365                         _loaded=true
1366                 fi
1367         else
1368                 if kldstat -q -m "$_mod"; then
1369                         _loaded=true
1370                 fi
1371         fi
1372         if ! $_loaded; then
1373                 if ! kldload "$1"; then
1374                         warn "Unable to load kernel module $1"
1375                         return 1
1376                 else
1377                         info "$1 kernel module loaded."
1378                 fi
1379         else
1380                 debug "load_kld: $1 kernel module already loaded."
1381         fi
1382         return 0
1383 }
1384
1385 # ltr str src dst
1386 #       Change every $src in $str to $dst.
1387 #       Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor
1388 #       awk(1).
1389 ltr()
1390 {
1391         local _str _src _dst _out _com
1392         _str=$1
1393         _src=$2
1394         _dst=$3
1395         _out=""
1396
1397         IFS=${_src}
1398         for _com in ${_str}; do
1399                 if [ -z "${_out}" ]; then
1400                         _out="${_com}"
1401                 else
1402                         _out="${_out}${_dst}${_com}"
1403                 fi
1404         done
1405         echo "${_out}"
1406 }
1407
1408 # Creates a list of providers for GELI encryption.
1409 geli_make_list()
1410 {
1411         local devices devices2
1412         local provider mountpoint type options rest
1413
1414         # Create list of GELI providers from fstab.
1415         while read provider mountpoint type options rest ; do
1416                 case ":${options}" in
1417                 :*noauto*)
1418                         noauto=yes
1419                         ;;
1420                 *)
1421                         noauto=no
1422                         ;;
1423                 esac
1424
1425                 case ":${provider}" in
1426                 :#*)
1427                         continue
1428                         ;;
1429                 *.eli)
1430                         # Skip swap devices.
1431                         if [ "${type}" = "swap" -o "${options}" = "sw" -o "${noauto}" = "yes" ]; then
1432                                 continue
1433                         fi
1434                         devices="${devices} ${provider}"
1435                         ;;
1436                 esac
1437         done < /etc/fstab
1438
1439         # Append providers from geli_devices.
1440         devices="${devices} ${geli_devices}"
1441
1442         for provider in ${devices}; do
1443                 provider=${provider%.eli}
1444                 provider=${provider#/dev/}
1445                 devices2="${devices2} ${provider}"
1446         done
1447
1448         echo ${devices2}
1449 }
1450
1451 # Find scripts in local_startup directories that use the old syntax
1452 #
1453 find_local_scripts_old () {
1454         zlist=''
1455         slist=''
1456         for dir in ${local_startup}; do
1457                 if [ -d "${dir}" ]; then
1458                         for file in ${dir}/[0-9]*.sh; do
1459                                 grep '^# PROVIDE:' $file >/dev/null 2>&1 &&
1460                                     continue
1461                                 zlist="$zlist $file"
1462                         done
1463                         for file in ${dir}/[^0-9]*.sh; do
1464                                 grep '^# PROVIDE:' $file >/dev/null 2>&1 &&
1465                                     continue
1466                                 slist="$slist $file"
1467                         done
1468                 fi
1469         done
1470 }
1471
1472 find_local_scripts_new () {
1473         local_rc=''
1474         for dir in ${local_startup}; do
1475                 if [ -d "${dir}" ]; then
1476                         for file in `grep -l '^# PROVIDE:' ${dir}/* 2>/dev/null`; do
1477                                 case "$file" in
1478                                 *.sample) ;;
1479                                 *)      if [ -x "$file" ]; then
1480                                                 local_rc="${local_rc} ${file}"
1481                                         fi
1482                                         ;;
1483                                 esac
1484                         done
1485                 fi
1486         done
1487 }
1488
1489 fi
1490
1491 _rc_subr_loaded=: