This file is indexed.

/sbin/resolvconf is in openresolv 3.7.2-1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
#!/bin/sh
# Copyright (c) 2007-2015 Roy Marples
# All rights reserved

# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * 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.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
# OWNER 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.

RESOLVCONF="$0"
SYSCONFDIR=/etc
LIBEXECDIR=/lib/resolvconf
VARDIR=/run/resolvconf

# Disregard dhcpcd setting
unset interface_order state_dir

# If you change this, change the test in VFLAG and libc.in as well
local_nameservers="127.* 0.0.0.0 255.255.255.255 ::1"

dynamic_order="tap[0-9]* tun[0-9]* vpn vpn[0-9]* ppp[0-9]* ippp[0-9]*"
interface_order="lo lo[0-9]*"
name_server_blacklist="0.0.0.0"

# Support original resolvconf configuration layout
# as well as the openresolv config file
if [ -f "$SYSCONFDIR"/resolvconf.conf ]; then
	. "$SYSCONFDIR"/resolvconf.conf
	[ -n "$state_dir" ] && VARDIR="$state_dir"
elif [ -d "$SYSCONFDIR/resolvconf" ]; then
	SYSCONFDIR="$SYSCONFDIR/resolvconf"
	if [ -f "$SYSCONFDIR"/interface-order ]; then
		interface_order="$(cat "$SYSCONFDIR"/interface-order)"
	fi
fi
IFACEDIR="$VARDIR/interfaces"
METRICDIR="$VARDIR/metrics"
PRIVATEDIR="$VARDIR/private"
EXCLUSIVEDIR="$VARDIR/exclusive"
LOCKDIR="$VARDIR/lock"

warn()
{
	echo "$*" >&2
}

error_exit()
{
	echo "$*" >&2
	exit 1
}

usage()
{
	cat <<-EOF
	Usage: ${RESOLVCONF##*/} [options]

	Inform the system about any DNS updates.

	Options:
	  -a \$INTERFACE    Add DNS information to the specified interface
	                   (DNS supplied via stdin in resolv.conf format)
	  -m metric        Give the added DNS information a metric
	  -p               Mark the interface as private
	  -x               Mark the interface as exclusive
	  -d \$INTERFACE    Delete DNS information from the specified interface
	  -f               Ignore non existant interfaces
	  -I               Init the state dir
	  -u               Run updates from our current DNS information
	  -l [\$PATTERN]    Show DNS information, optionally from interfaces
	                   that match the specified pattern
	  -i [\$PATTERN]    Show interfaces that have supplied DNS information
                   optionally from interfaces that match the specified
                   pattern
	  -v [\$PATTERN]    echo NEWDOMAIN, NEWSEARCH and NEWNS variables to
	  		   the console
	  -h               Show this help cruft
	EOF
	[ -z "$1" ] && exit 0
	echo
	error_exit "$*"
}

echo_resolv()
{
	local line= OIFS="$IFS"

	[ -n "$1" -a -f "$IFACEDIR/$1" ] || return 1
	echo "# resolv.conf from $1"
	# Our variable maker works of the fact each resolv.conf per interface
	# is separated by blank lines.
	# So we remove them when echoing them.
	while read -r line; do
		IFS="$OIFS"
		if [ -n "$line" ]; then
			# We need to set IFS here to preserve any whitespace
			IFS=''
			printf "%s\n" "$line"
		fi
	done < "$IFACEDIR/$1"
	echo
	IFS="$OIFS"
}

# Parse resolv.conf's and make variables
# for domain name servers, search name servers and global nameservers
parse_resolv()
{
	local line= ns= ds= search= d= n= newns=
	local new=true iface= private=false p= domain= l= islocal=

	newns=

	while read -r line; do
		case "$line" in
		"# resolv.conf from "*)
			if ${new}; then
				iface="${line#\# resolv.conf from *}"
				new=false
				if [ -e "$PRIVATEDIR/$iface" ]; then
					private=true
				else
					# Allow expansion
					cd "$IFACEDIR"
					private=false
					for p in $private_interfaces; do
						case "$iface" in
						"$p"|"$p":*) private=true; break;;
						esac
					done
				fi
			fi
			;;
		"nameserver "*)
			islocal=false
			for l in $local_nameservers; do
				case "${line#* }" in
				$l)
					islocal=true
					echo "LOCALNAMESERVERS=\"\$LOCALNAMESERVERS ${line#* }\""
					break
					;;
				esac
			done
			$islocal || ns="$ns${line#* } "
			;;
		"domain "*)
			if [ -z "$domain" ]; then
				domain="${line#* }"
				echo "DOMAIN=\"$domain\""
			fi
			search="${line#* }"
			;;
		"search "*)
			search="${line#* }"
			;;
		*)
			[ -n "$line" ] && continue
			if [ -n "$ns" -a -n "$search" ]; then
				newns=
				for n in $ns; do
					newns="$newns${newns:+,}$n"
				done
				ds=
				for d in $search; do
					ds="$ds${ds:+ }$d:$newns"
				done
				echo "DOMAINS=\"\$DOMAINS $ds\""
			fi
			echo "SEARCH=\"\$SEARCH $search\""
			if ! $private; then
				echo "NAMESERVERS=\"\$NAMESERVERS $ns\""
			fi
			ns=
			search=
			new=true
			;;
		esac
	done
}

uniqify()
{
	local result=
	while [ -n "$1" ]; do
		case " $result " in
		*" $1 "*);;
		*) result="$result $1";;
		esac
		shift
	done
	echo "${result# *}"
}

dirname()
{
	local dir= OIFS="$IFS"
	local IFS=/
	set -- $@
	IFS="$OIFS"
	if [ -n "$1" ]; then
		printf %s .
	else
		shift
	fi
	while [ -n "$2" ]; do
		printf "/%s" "$1"
		shift
	done
	printf "\n"
}

config_mkdirs()
{
	local e=0 f d
	for f; do
		[ -n "$f" ] || continue
		d="$(dirname "$f")"
		if [ ! -d "$d" ]; then
			if type install >/dev/null 2>&1; then
				install -d "$d" || e=$?
			else
				mkdir "$d" || e=$?
			fi
		fi
	done
	return $e
}

list_resolv()
{
	[ -d "$IFACEDIR" ] || return 0

	local report=false list= retval=0 cmd="$1" excl=
	shift

	case "$IF_EXCLUSIVE" in
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		if [ -d "$EXCLUSIVEDIR" ]; then
			cd "$EXCLUSIVEDIR"
			for i in *; do
				if [ -f "$i" ]; then
					list="${i#* }"
					break
				fi
			done
		fi
		excl=true
		;;
	*)
		excl=false
		;;
	esac

	# If we have an interface ordering list, then use that.
	# It works by just using pathname expansion in the interface directory.
	if [ -n "$1" ]; then
		list="$*"
		$force || report=true
	elif ! $excl; then
		cd "$IFACEDIR"
		for i in $interface_order; do
			[ -f "$i" ] && list="$list $i"
			for ii in "$i":* "$i".*; do
				[ -f "$ii" ] && list="$list $ii"
			done
		done
		for i in $dynamic_order; do
			if [ -e "$i" -a ! -e "$METRICDIR/"*" $i" ]; then
				list="$list $i"
			fi
			for ii in "$i":* "$i".*; do
				if [ -f "$ii" -a ! -e "$METRICDIR/"*" $ii" ]; then
					list="$list $ii"
				fi
			done
		done
		if [ -d "$METRICDIR" ]; then
			cd "$METRICDIR"
			for i in *; do
				[ -f "$i" ] && list="$list ${i#* }"
			done
		fi
		list="$list *"
	fi

	cd "$IFACEDIR"
	retval=1
	for i in $(uniqify $list); do
		# Only list interfaces which we really have
		if ! [ -f "$i" ]; then
			if $report; then
				echo "No resolv.conf for interface $i" >&2
				retval=2
			fi
			continue
		fi
		
		if [ "$cmd" = i -o "$cmd" = "-i" ]; then
			printf %s "$i "
		else
			echo_resolv "$i"
		fi
		[ $? = 0 -a "$retval" = 1 ] && retval=0
	done
	[ "$cmd" = i -o "$cmd" = "-i" ] && echo
	return $retval
}

list_remove() {
	local list= e= l= result= found= retval=0

	[ -z "$2" ] && return 0
	eval list=\"\$$1\"
	shift

	set -f
	for e; do
		found=false
		for l in $list; do
			case "$e" in
			$l) found=true;;
			esac
			$found && break
		done
		if $found; then
			retval=$(($retval + 1))
		else
			result="$result $e"
		fi
	done
	set +f
	echo "${result# *}"
	return $retval
}

echo_prepend()
{
	echo "# Generated by resolvconf"
	if [ -n "$search_domains" ]; then
		echo "search $search_domains"
	fi
	for n in $name_servers; do
		echo "nameserver $n"
	done
	echo
}

echo_append()
{
	echo "# Generated by resolvconf"
	if [ -n "$search_domains_append" ]; then
		echo "search $search_domains_append"
	fi
	for n in $name_servers_append; do
		echo "nameserver $n"
	done
	echo
}

replace()
{
	local r= k= f= v= val= sub=

	while read -r keyword value; do
		for r in $replace; do
			k="${r%%/*}"
			r="${r#*/}"
			f="${r%%/*}"
			r="${r#*/}"
			v="${r%%/*}"
			case "$keyword" in
			$k)
				case "$value" in
				$f) value="$v";;
				esac
				;;
			esac
		done
		val=
		for sub in $value; do
			for r in $replace_sub; do
				k="${r%%/*}"
				r="${r#*/}"
				f="${r%%/*}"
				r="${r#*/}"
				v="${r%%/*}"
				case "$keyword" in
				$k)
					case "$sub" in
					$f) sub="$v";;
					esac
					;;
				esac
			done
			val="$val${val:+ }$sub"
		done
		printf "%s %s\n" "$keyword" "$val"
	done
}

make_vars()
{
	local newdomains= d= dn= newns= ns=

	# Clear variables
	DOMAIN=
	DOMAINS=
	SEARCH=
	NAMESERVERS=
	LOCALNAMESERVERS=
	
	if [ -n "$name_servers" -o -n "$search_domains" ]; then
		eval "$(echo_prepend | parse_resolv)"
	fi
	if [ -z "$VFLAG" ]; then
		IF_EXCLUSIVE=1
		list_resolv -i "$@" >/dev/null || IF_EXCLUSIVE=0
		eval "$(list_resolv -l "$@" | replace | parse_resolv)"
	fi
	if [ -n "$name_servers_append" -o -n "$search_domains_append" ]; then
		eval "$(echo_append | parse_resolv)"
	fi

	# Ensure that we only list each domain once
	for d in $DOMAINS; do
		dn="${d%%:*}"
		list_remove domain_blacklist "$dn" >/dev/null || continue
		case " $newdomains" in
		*" ${dn}:"*) continue;;
		esac
		newns=
		for nd in $DOMAINS; do
			if [ "$dn" = "${nd%%:*}" ]; then
				ns="${nd#*:}"
				while [ -n "$ns" ]; do
					case ",$newns," in
					*,${ns%%,*},*) ;;
					*) list_remove name_server_blacklist \
						"${ns%%,*}" >/dev/null \
					&& newns="$newns${newns:+,}${ns%%,*}";;
					esac
					[ "$ns" = "${ns#*,}" ] && break
					ns="${ns#*,}"
				done
			fi
		done
		if [ -n "$newns" ]; then
			newdomains="$newdomains${newdomains:+ }$dn:$newns"
		fi
	done
	DOMAIN="$(list_remove domain_blacklist $DOMAIN)"
	SEARCH="$(uniqify $SEARCH)"
	SEARCH="$(list_remove domain_blacklist $SEARCH)"
	NAMESERVERS="$(uniqify $NAMESERVERS)"
	NAMESERVERS="$(list_remove name_server_blacklist $NAMESERVERS)"
	LOCALNAMESERVERS="$(uniqify $LOCALNAMESERVERS)"
	LOCALNAMESERVERS="$(list_remove name_server_blacklist $LOCALNAMESERVERS)"
	echo "DOMAIN='$DOMAIN'"
	echo "SEARCH='$SEARCH'"
	echo "NAMESERVERS='$NAMESERVERS'"
	echo "LOCALNAMESERVERS='$LOCALNAMESERVERS'"
	echo "DOMAINS='$newdomains'"
}

force=false
VFLAG=
while getopts a:Dd:fhIilm:puvVx OPT; do
	case "$OPT" in
	f) force=true;;
	h) usage;;
	m) IF_METRIC="$OPTARG";;
	p) IF_PRIVATE=1;;
	V)
		VFLAG=1
		if [ "$local_nameservers" = \
		    "127.* 0.0.0.0 255.255.255.255 ::1" ]
		then
			local_nameservers=
		fi
		;;
	x) IF_EXCLUSIVE=1;;
	'?') ;;
	*) cmd="$OPT"; iface="$OPTARG";;
	esac
done
shift $(($OPTIND - 1))
args="$iface${iface:+ }$*"

# -I inits the state dir
if [ "$cmd" = I ]; then
	if [ -d "$VARDIR" ]; then
		rm -rf "$VARDIR"/*
	fi
	exit $?
fi

# -D ensures that the listed config file base dirs exist
if [ "$cmd" = D ]; then
	config_mkdirs "$@"
	exit $?
fi

# -l lists our resolv files, optionally for a specific interface
if [ "$cmd" = l -o "$cmd" = i ]; then
	list_resolv "$cmd" "$args"
	exit $?
fi

# Not normally needed, but subscribers should be able to run independently
if [ "$cmd" = v -o -n "$VFLAG" ]; then
	make_vars "$iface"
	exit $?
fi

# Test that we have valid options
if [ "$cmd" = a -o "$cmd" = d ]; then
	if [ -z "$iface" ]; then
		usage "Interface not specified"
	fi
elif [ "$cmd" != u ]; then
	[ -n "$cmd" -a "$cmd" != h ] && usage "Unknown option $cmd"
	usage
fi

if [ "$cmd" = a ]; then
	for x in '/' \\ ' ' '*'; do
		case "$iface" in
		*[$x]*) error_exit "$x not allowed in interface name";;
		esac
	done
	for x in '.' '-' '~'; do
		case "$iface" in
		[$x]*) error_exit \
			"$x not allowed at start of interface name";;
		esac
	done
	[ "$cmd" = a -a -t 0 ] && error_exit "No file given via stdin"
fi

if [ ! -d "$VARDIR" ]; then
	if [ -L "$VARDIR" ]; then
		dir="$(readlink "$VARDIR")"
		# link maybe relative
		cd "${VARDIR%/*}"
		if ! mkdir -m 0755 -p "$dir"; then
			error_exit "Failed to create needed" \
				"directory $dir"
		fi
	else
		if ! mkdir -m 0755 -p "$VARDIR"; then
			error_exit "Failed to create needed" \
				"directory $VARDIR"
		fi
	fi
fi

if [ ! -d "$IFACEDIR" ]; then
	mkdir -m 0755 -p "$IFACEDIR" || \
		error_exit "Failed to create needed directory $IFACEDIR"
	if [ "$cmd" = d ]; then
		# Provide the same error messages as below
		if ! ${force}; then
			cd "$IFACEDIR"
			for i in $args; do
				warn "No resolv.conf for interface $i"
			done
		fi
		${force}
		exit $?
	fi
fi

# An interface was added, changed, deleted or a general update was called.
# Due to exclusivity we need to ensure that this is an atomic operation.
# Our subscribers *may* need this as well if the init system is sub par.
# As such we spinlock at this point as best we can.
# We don't use flock(1) because it's not widely available and normally resides
# in /usr which we do our very best to operate without.
[ -w "$VARDIR" ] || error_exit "Cannot write to $LOCKDIR"
: ${lock_timeout:=10}
while true; do
	if mkdir "$LOCKDIR" 2>/dev/null; then
		trap 'rm -rf "$LOCKDIR";' EXIT
		trap 'rm -rf "$LOCKDIR"; exit 1' INT QUIT ABRT SEGV ALRM TERM
		echo $$ >"$LOCKDIR/pid"
		break
	fi
	pid=$(cat "$LOCKDIR/pid")
	if ! kill -0 "$pid"; then
		warn "clearing stale lock pid $pid"
		rm -rf "$LOCKDIR"
		continue
	fi
	lock_timeout=$(($lock_timeout - 1))
	if [ "$lock_timeout" -le 0 ]; then
		error_exit "timed out waiting for lock from pid $pid"
	fi
	sleep 1
done

case "$cmd" in
a)
	# Read resolv.conf from stdin
	resolv="$(cat)"
	changed=false
	changedfile=false
	# If what we are given matches what we have, then do nothing
	if [ -e "$IFACEDIR/$iface" ]; then
		if [ "$(echo "$resolv")" != \
			"$(cat "$IFACEDIR/$iface")" ]
		then
			changed=true
			changedfile=true
		fi
	else
		changed=true
		changedfile=true
	fi

	# Set metric and private before creating the interface resolv.conf file
	# to ensure that it will have the correct flags
	[ ! -d "$METRICDIR" ] && mkdir "$METRICDIR"
	oldmetric="$METRICDIR/"*" $iface"
	newmetric=
	if [ -n "$IF_METRIC" ]; then
		# Pad metric to 6 characters, so 5 is less than 10
		while [ ${#IF_METRIC} -le 6 ]; do
			IF_METRIC="0$IF_METRIC"
		done
		newmetric="$METRICDIR/$IF_METRIC $iface"
	fi
	rm -f "$METRICDIR/"*" $iface"
	[ "$oldmetric" != "$newmetric" -a \
	    "$oldmetric" != "$METRICDIR/* $iface" ] &&
		changed=true
	[ -n "$newmetric" ] && echo " " >"$newmetric"

	case "$IF_PRIVATE" in
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		if [ ! -d "$PRIVATEDIR" ]; then
			[ -e "$PRIVATEDIR" ] && rm "$PRIVATEDIR"
			mkdir "$PRIVATEDIR"
		fi
		[ -e "$PRIVATEDIR/$iface" ] || changed=true
		[ -d "$PRIVATEDIR" ] && echo " " >"$PRIVATEDIR/$iface"
		;;
	*)
		if [ -e "$PRIVATEDIR/$iface" ]; then
			rm -f "$PRIVATEDIR/$iface"
			changed=true
		fi
		;;
	esac

	oldexcl=
	for x in "$EXCLUSIVEDIR/"*" $iface"; do
		if [ -f "$x" ]; then
			oldexcl="$x"
			break
		fi
	done
	case "$IF_EXCLUSIVE" in
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
		if [ ! -d "$EXCLUSIVEDIR" ]; then
			[ -e "$EXCLUSIVEDIR" ] && rm "$EXCLUSIVEDIR"
			mkdir "$EXCLUSIVEDIR"
		fi
		cd "$EXCLUSIVEDIR"
		for x in *; do
			[ -f "$x" ] && break
		done
		if [ "${x#* }" != "$iface" ]; then
			if [ "$x" = "${x% *}" ]; then
				x=10000000
			else
				x="${x% *}"
			fi
			if [ "$x" = "0000000" ]; then
				warn "exclusive underflow"
			else
				x=$(($x - 1))
			fi
			if [ -d "$EXCLUSIVEDIR" ]; then
				echo " " >"$EXCLUSIVEDIR/$x $iface"
			fi
			changed=true
		fi
		;;
	*)
		if [ -f "$oldexcl" ]; then
			rm -f "$oldexcl"
			changed=true
		fi
		;;
	esac

	if $changedfile; then
		printf "%s\n" "$resolv" >"$IFACEDIR/$iface" || exit $?
	elif ! $changed; then
		exit 0
	fi
	unset changed changedfile oldmetric newmetric x oldexcl
	;;

d)
	# Delete any existing information about the interface
	cd "$IFACEDIR"
	changed=false
	for i in $args; do
		if [ -e "$i" ]; then
			changed=true
		elif ! ${force}; then
			warn "No resolv.conf for interface $i"
		fi
		rm -f "$i" "$METRICDIR/"*" $i" \
			"$PRIVATEDIR/$i" \
			"$EXCLUSIVEDIR/"*" $i" || exit $?
	done
	if ! ${changed}; then
		# Set the return code based on the forced flag
		${force}
		exit $?
	fi
	unset changed i
	;;
esac

case "${resolvconf:-YES}" in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
*) exit 0;;
esac

eval "$(make_vars)"
export RESOLVCONF DOMAINS SEARCH NAMESERVERS LOCALNAMESERVERS
: ${list_resolv:=list_resolv -l}
retval=0
for script in "$LIBEXECDIR"/*; do
	if [ -f "$script" ]; then
		eval script_enabled="\$${script##*/}"
		case "${script_enabled:-YES}" in
		[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) ;;
		*) continue;;
		esac
		if [ -x "$script" ]; then
			"$script" "$cmd" "$iface"
		else
			(set -- "$cmd" "$iface"; . "$script")
		fi
		retval=$(($retval + $?))
	fi
done
exit $retval