| blob | 7b0e2954764c54f7c9371987f8ee6ccc2920d53f |
1 # $NetBSD: rc.subr,v 1.49 2002/05/21 12:31:01 lukem Exp $
2 # $FreeBSD: src/etc/rc.subr,v 1.13 2003/06/09 17:31:06 mtm Exp $
3 # $DragonFly: src/etc/rc.subr,v 1.15 2008/04/05 08:07:11 matthias Exp $
4 #
5 # Copyright (c) 1997-2002 The NetBSD Foundation, Inc.
6 # All rights reserved.
7 #
8 # This code is derived from software contributed to The NetBSD Foundation
9 # by Luke Mewburn.
10 #
11 # Redistribution and use in source and binary forms, with or without
12 # modification, are permitted provided that the following conditions
13 # are met:
14 # 1. Redistributions of source code must retain the above copyright
15 # notice, this list of conditions and the following disclaimer.
16 # 2. Redistributions in binary form must reproduce the above copyright
17 # notice, this list of conditions and the following disclaimer in the
18 # documentation and/or other materials provided with the distribution.
19 # 3. All advertising materials mentioning features or use of this software
20 # must display the following acknowledgement:
21 # This product includes software developed by the NetBSD
22 # Foundation, Inc. and its contributors.
23 # 4. Neither the name of The NetBSD Foundation nor the names of its
24 # contributors may be used to endorse or promote products derived
25 # from this software without specific prior written permission.
26 #
27 # THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 # ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 # TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 # POSSIBILITY OF SUCH DAMAGE.
38 #
39 # rc.subr
40 # functions used by various rc scripts
41 #
43 #
44 # Operating System dependent/independent variables
45 #
47 if [ "X$_file" = "X" ]; then
48 _file=$0
49 fi
51 provide_list=`rcorder -p $_file`
53 SYSCTL="/sbin/sysctl"
54 SYSCTL_N="${SYSCTL} -n"
55 CMD_OSTYPE="${SYSCTL_N} kern.ostype"
56 OSTYPE=`${CMD_OSTYPE}`
58 RC_RUNNING=0
59 RC_FAILED=1
60 RC_DISABLED=2
61 RC_IRRELEVANT=3
62 RC_CONFIGURED=4
63 RC_STOPPED=5
64 SYSCTL_W="${SYSCTL}"
66 #
67 # functions
68 # ---------
70 #
71 # set_rcvar base_var
72 # Set the variable name enabling a specific service.
73 # FreeBSD uses ${service}_enable, while NetBSD uses
74 # just the name of the service. For example:
75 # FreeBSD: sendmail_enable="YES"
76 # NetBSD : sendmail="YES"
77 # $1 - if $name is not the base to work of off, specify
78 # a different one
79 #
80 set_rcvar()
81 {
82 if [ -z "$1" ]; then
83 base_var=${name}
84 else
85 base_var="$1"
86 fi
88 echo ${base_var}
89 }
91 # set_provide_list
92 #
93 # $1 should be $rc_arg (start, stop, restart, reload, etc)
94 # $2 return value $RC_*
95 #
96 # Set the rcng_* variables associated with elements in provide_list
97 # based on $1 and $2.
98 #
99 # Returns non-zero when early termination should occur, in which
100 # case the caller should return with a value of $? - 1
101 #
102 set_provide_list()
103 {
104 # Remember, plret is set to the early termination return code + 1,
105 # or 0 if we want to continue the operation.
106 #
107 for i in $provide_list; do
108 case $1$2 in
109 start$RC_RUNNING|restart$RC_RUNNING)
110 varsym -s rcng_$i=running
111 ;;
112 start$RC_FAILED|restart$RC_FAILED)
113 varsym -s rcng_$i=failed
114 ;;
115 start$RC_DISABLED|restart$RC_DISABLED|reload$RC_DISABLED)
116 varsym -s rcng_$i=disabled
117 ;;
118 start$RC_IRRELEVANT|restart$RC_IRRELEVANT|reload$RC_IRRELEVANT)
119 varsym -s rcng_$i=irrelevant
120 ;;
121 start$RC_CONFIGURED|restart$RC_CONFIGURED)
122 varsym -s rcng_$i=configured
123 ;;
124 stop$RC_DISABLED)
125 varsym -s rcng_$i=disabled
126 ;;
127 stop$RC_IRRELEVANT)
128 varsym -s rcng_$i=irrelevant
129 ;;
130 stop*)
131 varsym -s rcng_$i=stopped
132 ;;
133 *)
134 ;;
135 esac
136 done
137 }
139 # check_early_term
140 # $1 should be $rc_arg (start, stop, restart, reload, etc)
141 # $2 return value $RC_*
142 # $3 $rc_force "" not to force, "anything" to force.
143 #
144 # The return code is 0 if early termination is not to occur, non-zero if
145 # it is to occur. When early termination is to occur the caller should
146 # return check_early_term()'s return code - 1. That is, early termination
147 # can occur with or without an error.
148 #
149 # The provide list will be adjusted when early termination occurs.
150 #
151 check_early_term()
152 {
153 case $2 in
154 $RC_RUNNING)
155 return 0
156 ;;
157 $RC_FAILED)
158 set_provide_list $1 $2
159 [ -z "$3" ] || return 0
160 return 2
161 ;;
162 $RC_DISABLED)
163 set_provide_list $1 $2
164 [ -z "$3" ] || return 0
165 return 1
166 ;;
167 $RC_IRRELEVANT)
168 set_provide_list $1 $2
169 [ -z "$3" ] || return 0
170 return 1
171 ;;
172 $RC_CONFIGURED)
173 return 0
174 ;;
175 $RC_STOPPED)
176 return 0
177 ;;
178 esac
179 set_provide_list $1 $2
180 [ -z "$3" ] || return 0
181 return 2
182 }
184 # adjust_return_code $1
185 #
186 # Convert the return code to an exit code of 0 (success) or 1 (failure)
187 #
188 adjust_return_code()
189 {
190 if [ $1 = $RC_FAILED ]; then
191 return 1
192 fi
193 return 0
194 }
196 #
197 # force_depend script
198 # Force a service to start. Intended for use by services
199 # to resolve dependency issues. It is assumed the caller
200 # has check to make sure this call is necessary
201 # $1 - filename of script, in /etc/rc.d, to run
202 #
203 force_depend()
204 {
205 _depend="$1"
207 info "${name} depends on ${_depend}, which will be forced to start."
208 if ! /etc/rc.d/${_depend} forcestart ; then
209 warn "Unable to force ${_depend}. It may already be running."
210 return 1
211 fi
212 return 0
213 }
215 #
216 # checkyesno var
217 # Test $1 variable, and warn if not set to YES or NO.
218 # Return 0 if it's "yes" (et al), nonzero otherwise.
219 #
220 checkyesno()
221 {
222 # try foo
223 eval _value=\$${1%_enable}
224 # try foo_enable
225 if [ -z $_value ]
226 then
227 eval _value=\$${1%_enable}_enable;
228 fi
229 debug "checkyesno: $1 is set to $_value."
230 case $_value in
232 # "yes", "true", "on", or "1"
233 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
234 return 0
235 ;;
237 # "no", "false", "off", or "0"
238 [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
239 return 1
240 ;;
241 *)
242 warn "\$${1} is not set properly - see rc.conf(5)."
243 return 1
244 ;;
245 esac
246 }
248 # reverse_list list
249 # print the list in reverse order
250 #
251 reverse_list()
252 {
253 _revlist=
254 for _revfile in $*; do
255 _revlist="$_revfile $_revlist"
256 done
257 echo $_revlist
258 }
260 #
261 # mount_critical_filesystems type
262 # Go through the list of critical filesystems as provided in
263 # the rc.conf(5) variable $critical_filesystems_${type}, checking
264 # each one to see if it is mounted, and if it is not, mounting it.
265 #
266 mount_critical_filesystems()
267 {
268 eval _fslist=\$critical_filesystems_${1}
269 for _fs in $_fslist; do
270 mount | (
271 _ismounted=no
272 while read what _on on _type type; do
273 if [ $on = $_fs ]; then
274 _ismounted=yes
275 fi
276 done
277 if [ $_ismounted = no ]; then
278 mount $_fs >/dev/null 2>&1
279 fi
280 )
281 done
282 }
284 #
285 # check_pidfile pidfile procname [interpreter]
286 # Parses the first line of pidfile for a PID, and ensures
287 # that the process is running and matches procname.
288 # Prints the matching PID upon success, nothing otherwise.
289 # interpreter is optional; see _find_processes() for details.
290 #
291 check_pidfile()
292 {
293 _pidfile=$1
294 _procname=$2
295 _interpreter=$3
296 if [ -z "$_pidfile" -o -z "$_procname" ]; then
297 err 3 'USAGE: check_pidfile pidfile procname [interpreter]'
298 fi
299 if [ ! -f $_pidfile ]; then
300 debug "pid file {$_pidfile): not readable."
301 return
302 fi
303 read _pid _junk < $_pidfile
304 if [ -z "$_pid" ]; then
305 debug "pid file {$_pidfile): no pid in file."
306 return
307 fi
308 _find_processes $_procname ${_interpreter:-.} '-p '"$_pid"
309 }
311 #
312 # check_process procname [interpreter]
313 # Ensures that a process (or processes) named procname is running.
314 # Prints a list of matching PIDs.
315 # interpreter is optional; see _find_processes() for details.
316 #
317 check_process()
318 {
319 _procname=$1
320 _interpreter=$2
321 if [ -z "$_procname" ]; then
322 err 3 'USAGE: check_process procname [interpreter]'
323 fi
324 _find_processes $_procname ${_interpreter:-.} '-ax'
325 }
327 #
328 # _find_processes procname interpreter psargs
329 # Search for procname in the output of ps generated by psargs.
330 # Prints the PIDs of any matching processes, space separated.
331 #
332 # If interpreter == ".", check the following variations of procname
333 # against the first word of each command:
334 # procname
335 # `basename procname`
336 # `basename procname` + ":"
337 # "(" + `basename procname` + ")"
338 #
339 # If interpreter != ".", read the first line of procname, remove the
340 # leading #!, normalise whitespace, append procname, and attempt to
341 # match that against each command, either as is, or with extra words
342 # at the end.
343 #
344 _find_processes()
345 {
346 if [ $# -ne 3 ]; then
347 err 3 'USAGE: _find_processes procname interpreter psargs'
348 fi
349 _procname=$1
350 _interpreter=$2
351 _psargs=$3
353 _pref=
354 if [ $_interpreter != "." ]; then # an interpreted script
355 read _interp < $_procname # read interpreter name
356 _interp=${_interp#\#!} # strip #!
357 set -- $_interp
358 if [ $_interpreter != $1 ]; then
359 warn "\$command_interpreter $_interpreter != $1"
360 fi
361 _interp="$* $_procname" # cleanup spaces, add _procname
362 _fp_args='_argv'
363 _fp_match='case "$_argv" in
364 ${_interp}|"${_interp} "*)'
365 else # a normal daemon
366 _procnamebn=${_procname##*/}
367 _fp_args='_arg0 _argv'
368 _fp_match='case "$_arg0" in
369 $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})")'
370 fi
372 _proccheck='
373 ps -o "pid,command" '"$_psargs"' |
374 while read _npid '"$_fp_args"'; do
375 case "$_npid" in
376 PID)
377 continue ;;
378 esac ; '"$_fp_match"'
379 echo -n "$_pref$_npid" ;
380 _pref=" "
381 ;;
382 esac
383 done'
385 # debug "in _find_processes: proccheck is ($_proccheck)."
386 eval $_proccheck
387 }
389 #
390 # wait_for_pids pid [pid ...]
391 # spins until none of the pids exist
392 #
393 wait_for_pids()
394 {
395 _list=$*
396 if [ -z "$_list" ]; then
397 return
398 fi
399 _prefix=
400 while true; do
401 _nlist="";
402 for _j in $_list; do
403 if kill -0 $_j 2>/dev/null; then
404 _nlist="${_nlist}${_nlist:+ }$_j"
405 fi
406 done
407 if [ -z "$_nlist" ]; then
408 break
409 fi
410 _list=$_nlist
411 echo -n ${_prefix:-"Waiting for PIDS: "}$_list
412 _prefix=", "
413 sleep 2
414 done
415 if [ -n "$_prefix" ]; then
416 echo "."
417 fi
418 }
420 #
421 # run_rc_command argument
422 # Search for argument in the list of supported commands, which is:
423 # "start stop restart rcvar status poll ${extra_commands}"
424 # If there's a match, run ${argument}_cmd or the default method
425 # (see below).
426 #
427 # If argument has a given prefix, then change the operation as follows:
428 # Prefix Operation
429 # ------ ---------
430 # fast Skip the pid check, and set rc_fast=yes
431 # force Set ${rcvar} to YES, and set rc_force=yes
432 #
433 # The following globals are used:
434 #
435 # Name Needed Purpose
436 # ---- ------ -------
437 # provide_list (gen) list of keywords provided by current rcng file
438 #
439 # name y Name of script.
440 #
441 # command n Full path to command.
442 # Not needed if ${rc_arg}_cmd is set for
443 # each keyword.
444 #
445 # command_args n Optional args/shell directives for command.
446 #
447 # command_interpreter n If not empty, command is interpreted, so
448 # call check_{pidfile,process}() appropriately.
449 #
450 # extra_commands n List of extra commands supported.
451 #
452 # pidfile n If set, use check_pidfile $pidfile $command,
453 # otherwise use check_process $command.
454 # In either case, only check if $command is set.
455 #
456 # procname n Process name to check for instead of $command.
457 #
458 # rcvar n This is checked with checkyesno to determine
459 # if the action should be run.
460 #
461 # ${name}_chroot n Directory to chroot to before running ${command}
462 # Requires /usr to be mounted.
463 #
464 # ${name}_chdir n Directory to cd to before running ${command}
465 # (if not using ${name}_chroot).
466 #
467 # ${name}_flags n Arguments to call ${command} with.
468 # NOTE: $flags from the parent environment
469 # can be used to override this.
470 #
471 # ${name}_nice n Nice level to run ${command} at.
472 #
473 # ${name}_user n User to run ${command} as, using su(1) if not
474 # using ${name}_chroot.
475 # Requires /usr to be mounted.
476 #
477 # ${name}_group n Group to run chrooted ${command} as.
478 # Requires /usr to be mounted.
479 #
480 # ${name}_groups n Comma separated list of supplementary groups
481 # to run the chrooted ${command} with.
482 # Requires /usr to be mounted.
483 #
484 # ${rc_arg}_cmd n If set, use this as the method when invoked;
485 # Otherwise, use default command (see below)
486 #
487 # ${rc_arg}_precmd n If set, run just before performing the
488 # ${rc_arg}_cmd method in the default
489 # operation (i.e, after checking for required
490 # bits and process (non)existence).
491 # If this completes with a non-zero exit code,
492 # don't run ${rc_arg}_cmd.
493 #
494 # ${rc_arg}_postcmd n If set, run just after performing the
495 # ${rc_arg}_cmd method, if that method
496 # returned a zero exit code.
497 #
498 # required_dirs n If set, check for the existence of the given
499 # directories before running the default
500 # (re)start command.
501 #
502 # required_files n If set, check for the readability of the given
503 # files before running the default (re)start
504 # command.
505 #
506 # required_vars n If set, perform checkyesno on each of the
507 # listed variables before running the default
508 # (re)start command.
509 #
510 # Default behaviour for a given argument, if no override method is
511 # provided:
512 #
513 # Argument Default behaviour
514 # -------- -----------------
515 # start if !running && checkyesno ${rcvar}
516 # ${command}
517 #
518 # stop if ${pidfile}
519 # rc_pid=$(check_pidfile $pidfile $command)
520 # else
521 # rc_pid=$(check_process $command)
522 # kill $sig_stop $rc_pid
523 # wait_for_pids $rc_pid
524 # ($sig_stop defaults to TERM.)
525 #
526 # reload Similar to stop, except use $sig_reload instead,
527 # and doesn't wait_for_pids.
528 # $sig_reload defaults to HUP.
529 #
530 # restart Run `stop' then `start'.
531 #
532 # status Show if ${command} is running, etc.
533 #
534 # poll Wait for ${command} to exit.
535 #
536 # rcvar Display what rc.conf variable is used (if any).
537 #
538 # Variables available to methods, and after run_rc_command() has
539 # completed:
540 #
541 # Variable Purpose
542 # -------- -------
543 # rc_arg Argument to command, after fast/force processing
544 # performed
545 #
546 # rc_flags Flags to start the default command with.
547 # Defaults to ${name}_flags, unless overridden
548 # by $flags from the environment.
549 # This variable may be changed by the precmd method.
550 #
551 # rc_pid PID of command (if appropriate)
552 #
553 # rc_fast Not empty if "fast" was provided (q.v.)
554 #
555 # rc_force Not empty if "force" was provided (q.v.)
556 #
557 #
558 dummy_rc_command()
559 {
560 rc_arg=$1
562 case "$rc_arg" in
563 fast*) # "fast" prefix; don't check pid
564 rc_arg=${rc_arg#fast}
565 ;;
566 force*) # "force prefix; always start
567 rc_arg=${rc_arg#force}
568 ;;
569 esac
570 set_provide_list $rc_arg $RC_CONFIGURED
571 return 0
572 }
574 run_rc_command()
575 {
576 _return=0
577 rc_arg=$1
578 if [ -z "$name" ]; then
579 err 3 'run_rc_command: $name is not set.'
580 fi
582 case "$rc_arg" in
583 fast*) # "fast" prefix; don't check pid
584 rc_arg=${rc_arg#fast}
585 rc_fast=yes
586 ;;
587 force*) # "force prefix; always start
588 rc_arg=${rc_arg#force}
589 rc_force=yes
590 if [ -n "${rcvar}" ]; then
591 eval ${rcvar}=YES
592 fi
593 ;;
594 esac
596 eval _override_command=\$${name}_program
597 if [ -n "$_override_command" ]; then
598 command=$_override_command
599 fi
601 _keywords="start stop restart rcvar $extra_commands"
602 rc_pid=
603 _pidcmd=
604 _procname=${procname:-${command}}
606 # setup pid check command if not fast
607 if [ -z "$rc_fast" -a -n "$_procname" ]; then
608 if [ -n "$pidfile" ]; then
609 _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')'
610 else
611 _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')'
612 fi
613 if [ -n "$_pidcmd" ]; then
614 _keywords="${_keywords} status poll"
615 fi
616 fi
618 if [ -z "$rc_arg" ]; then
619 rc_usage "$_keywords"
620 fi
622 if [ -n "$flags" ]; then # allow override from environment
623 rc_flags=$flags
624 else
625 eval rc_flags=\$${name}_flags
626 fi
627 eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \
628 _nice=\$${name}_nice _user=\$${name}_user \
629 _group=\$${name}_group _groups=\$${name}_groups
631 if [ -n "$_user" ]; then # unset $_user if running as that user
632 if [ "$_user" = "$(id -un)" ]; then
633 unset _user
634 fi
635 fi
637 # if ${rcvar} is set, and $1 is not
638 # "rcvar", then run
639 # checkyesno ${rcvar}
640 # and return if that failed
641 #
642 if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" ]; then
643 if ! checkyesno ${rcvar}; then
644 set_provide_list $rc_arg $RC_DISABLED
645 return 0
646 fi
647 fi
649 eval $_pidcmd # determine the pid if necessary
651 for _elem in $_keywords; do
652 if [ "$_elem" != "$rc_arg" ]; then
653 continue
654 fi
656 # if there's a custom ${XXX_cmd},
657 # run that instead of the default
658 #
659 eval _cmd=\$${rc_arg}_cmd _precmd=\$${rc_arg}_precmd \
660 _postcmd=\$${rc_arg}_postcmd
661 if [ -n "$_cmd" ]; then
662 # if the precmd failed and force
663 # isn't set, exit
664 #
665 if [ -n "$_precmd" ]; then
666 debug "run_rc_command: evaluating ${_precmd}()."
667 eval $_precmd
669 _return=$?
670 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
671 fi
673 if [ -n "$_cmd" ]; then
674 debug "run_rc_command: evaluating ${_cmd}()."
675 eval $_cmd
676 _return=$?
677 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
678 fi
680 if [ -n "$_postcmd" ]; then
681 debug "run_rc_command: evaluating ${_postcmd}()."
682 eval $_postcmd
683 _return=$?
684 check_early_term $rc_arg $_return "" || return $(($?-1))
685 fi
686 set_provide_list $rc_arg $_return
687 adjust_return_code $_return
688 return $?
689 fi
691 case "$rc_arg" in # default operations...
693 status)
694 if [ -n "$rc_pid" ]; then
695 echo "${name} is running as pid $rc_pid."
696 else
697 echo "${name} is not running."
698 return 1
699 fi
700 ;;
702 start)
703 if [ -n "$rc_pid" ]; then
704 echo "${name} already running? (pid=$rc_pid)."
705 exit 1
706 fi
708 if [ ! -x $command ]; then
709 info "run_rc_command: cannot run ($command)."
710 set_provide_list $rc_arg $RC_FAILED
711 adjust_return_code $RC_FAILED
712 return $?
713 fi
715 # check for required variables,
716 # directories, and files
717 #
718 for _f in $required_vars; do
719 if ! checkyesno $_f; then
720 warn "\$${_f} is not set."
721 if [ -z "$rc_force" ]; then
722 set_provide_list $rc_arg $RC_FAILED
723 adjust_return_code $RC_FAILED
724 return $?
725 fi
726 fi
727 done
728 for _f in $required_dirs; do
729 if [ ! -d "${_f}/." ]; then
730 warn "${_f} is not a directory."
731 if [ -z "$rc_force" ]; then
732 set_provide_list $rc_arg $RC_FAILED
733 adjust_return_code $RC_FAILED
734 return $?
735 fi
736 fi
737 done
738 for _f in $required_files; do
739 if [ ! -r "${_f}" ]; then
740 warn "${_f} is not readable."
741 if [ -z "$rc_force" ]; then
742 set_provide_list $rc_arg $RC_FAILED
743 adjust_return_code $RC_FAILED
744 return $?
745 fi
746 fi
747 done
749 # if the precmd failed and force
750 # isn't set, exit
751 #
752 if [ -n "${_precmd}" ]; then
753 debug "run_rc_command: evaluating ${_precmd}()."
754 eval $_precmd
755 _return=$?
756 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
757 fi
759 # setup the command to run, and run it
760 #
761 echo "Starting ${name}."
762 if [ -n "$_chroot" ]; then
763 _doit="\
764 ${_nice:+nice -n $_nice }\
765 chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\
766 $_chroot $command $rc_flags $command_args"
767 else
768 _doit="\
769 ${_chdir:+cd $_chdir; }\
770 ${_nice:+nice -n $_nice }\
771 $command $rc_flags $command_args"
772 if [ -n "$_user" ]; then
773 _doit="su -m $_user -c 'sh -c \"$_doit\"'"
774 fi
775 fi
777 # if the cmd failed and force
778 # isn't set, exit
779 #
780 debug "run_rc_command: _doit: $_doit"
781 eval $_doit
782 _return=$?
783 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
784 # finally, run postcmd
785 #
786 if [ -n "${_postcmd}" ]; then
787 debug "run_rc_command: evaluating ${_postcmd}()."
788 eval $_postcmd
789 fi
790 ;;
792 stop)
793 if [ -z "$rc_pid" ]; then
794 if [ -n "$pidfile" ]; then
795 echo \
796 "${name} not running? (check $pidfile)."
797 else
798 echo "${name} not running?"
799 fi
800 set_provide_list $rc_arg $RC_STOPPED
801 exit 1
802 fi
804 # if the precmd failed and force
805 # isn't set, exit
806 #
807 if [ -n $_precmd ]; then
808 eval $_precmd
809 _return=$?
810 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
811 fi
813 # send the signal to stop
814 #
815 echo "Stopping ${name}."
816 _doit="kill -${sig_stop:-TERM} $rc_pid"
817 if [ -n "$_user" ]; then
818 _doit="su -m $_user -c 'sh -c \"$_doit\"'"
819 fi
821 # if the stop cmd failed and force
822 # isn't set, exit
823 #
824 eval $_doit
825 _return=$?
826 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
827 # wait for the command to exit,
828 # and run postcmd.
829 sleep 0.1
830 wait_for_pids $rc_pid
831 if [ -n "$_postcmd" ]; then
832 eval $_postcmd
833 _return=$?
834 fi
835 ;;
837 reload)
838 if [ -z "$rc_pid" ]; then
839 if [ -n "$pidfile" ]; then
840 echo \
841 "${name} not running? (check $pidfile)."
842 else
843 echo "${name} not running?"
844 fi
845 set_provide_list $rc_arg $RC_FAILED
846 exit 1
847 fi
848 echo "Reloading ${name} config files."
849 if [ -n "$_precmd" ]; then
850 eval $_precmd
851 _return=$?
852 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
853 fi
854 _doit="kill -${sig_reload:-HUP} $rc_pid"
855 if [ -n "$_user" ]; then
856 _doit="su -m $_user -c 'sh -c \"$_doit\"'"
857 fi
858 eval $_doit
859 _return=$?
860 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
861 if [ -n "$_postcmd" ]; then
862 eval $_postcmd
863 _return=$?
864 fi
865 ;;
867 restart)
868 if [ -n "$_precmd" ]; then
869 eval $_precmd
870 _return=$?
871 check_early_term $rc_arg $_return "$rc_force" || return $(($?-1))
872 fi
873 # prevent restart being called more
874 # than once by any given script
875 #
876 if [ -n "$_rc_restart_done" ]; then
877 return 0
878 fi
879 _rc_restart_done=YES
881 ( $0 ${rc_force:+force}stop )
882 $0 ${rc_force:+force}start
883 _return=$?
885 if [ -n "$_postcmd" ]; then
886 eval $_postcmd
887 adjust_return_code $?
888 _return=$?
889 fi
890 # Do not set_provide_list(), the start command above
891 # will have done it for us and we do not know the
892 # actual RC code to base a setting on here.
893 #
894 return $_return
895 ;;
897 poll)
898 if [ -n "$rc_pid" ]; then
899 wait_for_pids $rc_pid
900 fi
901 ;;
903 rcvar)
904 echo "# $name"
905 if [ -n "$rcvar" ]; then
906 if checkyesno ${rcvar}; then
907 echo "\$${rcvar}=YES"
908 else
909 echo "\$${rcvar}=NO"
910 fi
911 fi
912 ;;
914 *)
915 rc_usage "$_keywords"
916 ;;
918 esac
919 set_provide_list $rc_arg $_return
920 adjust_return_code $_return
921 return $?
922 done
924 echo 1>&2 "$0: unknown directive '$rc_arg'."
925 rc_usage "$_keywords"
926 exit 1
927 }
929 #
930 # run_rc_script file arg
931 # Start the script `file' with `arg', and correctly handle the
932 # return value from the script. If `file' ends with `.sh', it's
933 # sourced into the current environment. If `file' appears to be
934 # a backup or scratch file, ignore it. Otherwise if it's
935 # executable run as a child process.
936 #
937 run_rc_script()
938 {
939 _file=$1
940 _arg=$2
941 if [ -z "$_file" -o -z "$_arg" ]; then
942 err 3 'USAGE: run_rc_script file arg'
943 fi
945 trap "echo 'Reboot interrupted'; exit 1" 3
947 unset name command command_args command_interpreter \
948 extra_commands pidfile procname \
949 rcvar required_dirs required_files required_vars
950 eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd
952 case "$_file" in
953 *.sh) # run in current shell
954 set $_arg ; . $_file
955 ;;
956 *[~#]|*.OLD|*.orig) # scratch file; skip
957 warn "Ignoring scratch file $_file"
958 ;;
959 *) # run in subshell
960 if [ -x $_file ]; then
961 if [ -n "$rc_fast_and_loose" ]; then
962 set $_arg ; . $_file
963 else
964 ( trap "echo 'Reboot interrupted'; exit 1" 3
965 set $_arg ; . $_file )
966 fi
967 fi
968 ;;
969 esac
970 }
972 # ltr str src dst
973 # Change every $src in $str to $dst.
974 # Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor
975 # awk(1).
976 ltr()
977 {
978 local _str _src _dst _out _com
979 _str=$1
980 _src=$2
981 _dst=$3
982 _out=""
984 IFS=${_src}
985 for _com in ${_str}; do
986 if [ -z "${_out}" ]; then
987 _out="${_com}"
988 else
989 _out="${_out}${_dst}${_com}"
990 fi
991 done
992 echo "${_out}"
993 }
995 #
996 # load_rc_config
997 # Source in the configuration file for a given command.
998 #
999 load_rc_config()
1000 {
1001 _command=$1
1002 if [ -z "$_command" ]; then
1003 err 3 'USAGE: load_rc_config command'
1004 fi
1006 if [ -z "$_rc_conf_loaded" ]; then
1007 if [ -r /etc/defaults/rc.conf ]; then
1008 debug "Sourcing /etc/defaults/rc.conf"
1009 . /etc/defaults/rc.conf
1010 source_rc_confs
1011 elif [ -r /etc/rc.conf ]; then
1012 debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)."
1013 . /etc/rc.conf
1014 fi
1015 _rc_conf_loaded=YES
1016 fi
1017 if [ -f /etc/rc.conf.d/"$_command" ]; then
1018 debug "Sourcing /etc/rc.conf.d/${_command}"
1019 . /etc/rc.conf.d/"$_command"
1020 fi
1022 # XXX - Deprecated variable name support
1023 #
1024 [ -n "$portmap_enable" ] && rpcbind_enable="$portmap_enable"
1025 [ -n "$portmap_program" ] && rpcbind_program="$portmap_program"
1026 [ -n "$portmap_flags" ] && rpcbind_flags="$portmap_flags"
1027 [ -n "$single_mountd_enable" ] && mountd_enable="$single_mountd_enable"
1028 [ -n "$dhcp_program" ] && dhclient_program="$dhcp_program"
1029 [ -n "$dhcp_flags" ] && dhclient_flags="$dhcp_flags"
1031 }
1033 #
1034 # rc_usage commands
1035 # Print a usage string for $0, with `commands' being a list of
1036 # valid commands.
1037 #
1038 rc_usage()
1039 {
1040 echo -n 1>&2 "Usage: $0 [fast|force]("
1042 _sep=
1043 for _elem in $*; do
1044 echo -n 1>&2 "$_sep$_elem"
1045 _sep="|"
1046 done
1047 echo 1>&2 ")"
1048 exit 1
1049 }
1051 #
1052 # err exitval message
1053 # Display message to stderr and log to the syslog, and exit with exitval.
1054 #
1055 err()
1056 {
1057 exitval=$1
1058 shift
1060 if [ -x /usr/bin/logger ]; then
1061 logger "$0: ERROR: $*"
1062 fi
1063 echo 1>&2 "$0: ERROR: $*"
1064 exit $exitval
1065 }
1067 #
1068 # warn message
1069 # Display message to stderr and log to the syslog.
1070 #
1071 warn()
1072 {
1073 if [ -x /usr/bin/logger ]; then
1074 logger "$0: WARNING: $*"
1075 fi
1076 echo 1>&2 "$0: WARNING: $*"
1077 }
1079 #
1080 # info message
1081 # Display informational message to stdout and log to syslog.
1082 #
1083 info()
1084 {
1085 case ${rc_info} in
1086 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
1087 if [ -x /usr/bin/logger ]; then
1088 logger "$0: INFO: $*"
1089 fi
1090 echo "$0: INFO: $*"
1091 ;;
1092 esac
1093 }
1095 #
1096 # debug message
1097 # If debugging is enabled in rc.conf output message to stderr.
1098 # BEWARE that you don't call any subroutine that itself calls this
1099 # function.
1100 #
1101 debug()
1102 {
1103 case ${rc_debug} in
1104 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
1105 if [ -x /usr/bin/logger ]; then
1106 logger "$0: INFO: $*"
1107 fi
1108 echo 1>&2 "$0: DEBUG: $*"
1109 ;;
1110 esac
1111 }
1113 #
1114 # backup_file action file cur backup
1115 # Make a backup copy of `file' into `cur', and save the previous
1116 # version of `cur' as `backup' or use rcs for archiving.
1117 #
1118 # This routine checks the value of the backup_uses_rcs variable,
1119 # which can be either YES or NO.
1120 #
1121 # The `action' keyword can be one of the following:
1122 #
1123 # add `file' is now being backed up (and is possibly
1124 # being reentered into the backups system). `cur'
1125 # is created and RCS files, if necessary, are
1126 # created as well.
1127 #
1128 # update `file' has changed and needs to be backed up.
1129 # If `cur' exists, it is copied to to `back' or
1130 # checked into RCS (if the repository file is old),
1131 # and then `file' is copied to `cur'. Another RCS
1132 # check in done here if RCS is being used.
1133 #
1134 # remove `file' is no longer being tracked by the backups
1135 # system. If RCS is not being used, `cur' is moved
1136 # to `back', otherwise an empty file is checked in,
1137 # and then `cur' is removed.
1138 #
1139 #
1140 backup_file()
1141 {
1142 _action=$1
1143 _cpfile=$2
1144 _cur=$3
1145 _back=$4
1147 if checkyesno backup_uses_rcs; then
1148 _msg0="backup archive"
1149 _msg1="update"
1151 # ensure that history file is not locked
1152 if [ -f $_cur,v ]; then
1153 rcs -q -u -U -M $_cur
1154 fi
1156 # ensure after switching to rcs that the
1157 # current backup is not lost
1158 if [ -f $_cur ]; then
1159 # no archive, or current newer than archive
1160 if [ ! -f $_cur,v -o $_cur -nt $_cur,v ]; then
1161 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1162 rcs -q -kb -U $_cur
1163 co -q -f -u $_cur
1164 fi
1165 fi
1167 case $_action in
1168 add|update)
1169 cp -p $_cpfile $_cur
1170 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1171 rcs -q -kb -U $_cur
1172 co -q -f -u $_cur
1173 chown root:wheel $_cur $_cur,v
1174 ;;
1175 remove)
1176 cp /dev/null $_cur
1177 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur
1178 rcs -q -kb -U $_cur
1179 chown root:wheel $_cur $_cur,v
1180 rm $_cur
1181 ;;
1182 esac
1183 else
1184 case $_action in
1185 add|update)
1186 if [ -f $_cur ]; then
1187 cp -p $_cur $_back
1188 fi
1189 cp -p $_cpfile $_cur
1190 chown root:wheel $_cur
1191 ;;
1192 remove)
1193 mv -f $_cur $_back
1194 ;;
1195 esac
1196 fi
1197 }