1# $NetBSD: rc.subr,v 1.67 2006/10/07 11:25:15 elad 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# 19# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29# POSSIBILITY OF SUCH DAMAGE. 30# 31# rc.subr 32# functions used by various rc scripts 33# 34 35: ${RC_PID:=$$}; export RC_PID 36 37# 38# Operating System dependent/independent variables 39# 40 41if [ -n "${_rc_subr_loaded}" ]; then 42 return 43fi 44 45_rc_subr_loaded="YES" 46 47SYSCTL="/sbin/sysctl" 48SYSCTL_N="${SYSCTL} -n" 49SYSCTL_W="${SYSCTL}" 50PROTECT="/usr/bin/protect" 51ID="/usr/bin/id" 52IDCMD="if [ -x $ID ]; then $ID -un; fi" 53PS="/bin/ps -ww" 54JID=0 55 56# 57# functions 58# --------- 59 60# list_vars pattern 61# List vars matching pattern. 62# 63list_vars() 64{ 65 set | { while read LINE; do 66 var="${LINE%%=*}" 67 case "$var" in 68 "$LINE"|*[!a-zA-Z0-9_]*) continue ;; 69 $1) echo $var 70 esac 71 done; } 72} 73 74# set_rcvar [var] [defval] [desc] 75# 76# Echo or define a rc.conf(5) variable name. Global variable 77# $rcvars is used. 78# 79# If no argument is specified, echo "${name}_enable". 80# 81# If only a var is specified, echo "${var}_enable". 82# 83# If var and defval are specified, the ${var} is defined as 84# rc.conf(5) variable and the default value is ${defvar}. An 85# optional argument $desc can also be specified to add a 86# description for that. 87# 88set_rcvar() 89{ 90 local _var 91 92 case $# in 93 0) echo ${name}_enable ;; 94 1) echo ${1}_enable ;; 95 *) 96 debug "set_rcvar: \$$1=$2 is added" \ 97 " as a rc.conf(5) variable." 98 _var=$1 99 rcvars="${rcvars# } $_var" 100 eval ${_var}_defval=\"$2\" 101 shift 2 102 eval ${_var}_desc=\"$*\" 103 ;; 104 esac 105} 106 107# set_rcvar_obsolete oldvar [newvar] [msg] 108# Define obsolete variable. 109# Global variable $rcvars_obsolete is used. 110# 111set_rcvar_obsolete() 112{ 113 local _var 114 _var=$1 115 debug "set_rcvar_obsolete: \$$1(old) -> \$$2(new) is defined" 116 117 rcvars_obsolete="${rcvars_obsolete# } $1" 118 eval ${1}_newvar=\"$2\" 119 shift 2 120 eval ${_var}_obsolete_msg=\"$*\" 121} 122 123# 124# force_depend script [rcvar] 125# Force a service to start. Intended for use by services 126# to resolve dependency issues. 127# $1 - filename of script, in /etc/rc.d, to run 128# $2 - name of the script's rcvar (minus the _enable) 129# 130force_depend() 131{ 132 local _depend _dep_rcvar 133 134 _depend="$1" 135 _dep_rcvar="${2:-$1}_enable" 136 137 [ -n "$rc_fast" ] && ! checkyesno always_force_depends && 138 checkyesno $_dep_rcvar && return 0 139 140 /etc/rc.d/${_depend} forcestatus >/dev/null 2>&1 && return 0 141 142 info "${name} depends on ${_depend}, which will be forced to start." 143 if ! /etc/rc.d/${_depend} forcestart; then 144 warn "Unable to force ${_depend}. It may already be running." 145 return 1 146 fi 147} 148 149# 150# checkyesno var 151# Test $1 variable, and warn if not set to YES or NO. 152# Return 0 if it's "yes" (et al), nonzero otherwise. 153# 154checkyesno() 155{ 156 eval _value=\$${1} 157 debug "checkyesno: $1 is set to $_value." 158 case $_value in 159 160 # "yes", "true", "on", or "1" 161 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 162 return 0 163 ;; 164 165 # "no", "false", "off", or "0" 166 [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) 167 return 1 168 ;; 169 *) 170 warn "\$${1} is not set properly - see rc.conf(5)." 171 return 1 172 ;; 173 esac 174} 175 176# 177# reverse_list list 178# print the list in reverse order 179# 180reverse_list() 181{ 182 _revlist= 183 for _revfile; do 184 _revlist="$_revfile $_revlist" 185 done 186 echo $_revlist 187} 188 189# stop_boot always 190# If booting directly to multiuser or $always is enabled, 191# send SIGTERM to the parent (/etc/rc) to abort the boot. 192# Otherwise just exit. 193# 194stop_boot() 195{ 196 local always 197 198 case $1 in 199 # "yes", "true", "on", or "1" 200 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 201 always=true 202 ;; 203 *) 204 always=false 205 ;; 206 esac 207 if [ "$autoboot" = yes -o "$always" = true ]; then 208 echo "ERROR: ABORTING BOOT (sending SIGTERM to parent)!" 209 kill -TERM ${RC_PID} 210 fi 211 exit 1 212} 213 214# 215# mount_critical_filesystems type 216# Go through the list of critical filesystems as provided in 217# the rc.conf(5) variable $critical_filesystems_${type}, checking 218# each one to see if it is mounted, and if it is not, mounting it. 219# 220mount_critical_filesystems() 221{ 222 eval _fslist=\$critical_filesystems_${1} 223 for _fs in $_fslist; do 224 mount | ( 225 _ismounted=false 226 while read what _on on _type type; do 227 if [ $on = $_fs ]; then 228 _ismounted=true 229 fi 230 done 231 if $_ismounted; then 232 : 233 else 234 mount $_fs >/dev/null 2>&1 235 fi 236 ) 237 done 238} 239 240# 241# check_pidfile pidfile procname [interpreter] 242# Parses the first line of pidfile for a PID, and ensures 243# that the process is running and matches procname. 244# Prints the matching PID upon success, nothing otherwise. 245# interpreter is optional; see _find_processes() for details. 246# 247check_pidfile() 248{ 249 _pidfile=$1 250 _procname=$2 251 _interpreter=$3 252 if [ -z "$_pidfile" -o -z "$_procname" ]; then 253 err 3 'USAGE: check_pidfile pidfile procname [interpreter]' 254 fi 255 if [ ! -f $_pidfile ]; then 256 debug "pid file ($_pidfile): not readable." 257 return 258 fi 259 read _pid _junk < $_pidfile 260 if [ -z "$_pid" ]; then 261 debug "pid file ($_pidfile): no pid in file." 262 return 263 fi 264 _find_processes $_procname ${_interpreter:-.} '-p '"$_pid" 265} 266 267# 268# check_process procname [interpreter] 269# Ensures that a process (or processes) named procname is running. 270# Prints a list of matching PIDs. 271# interpreter is optional; see _find_processes() for details. 272# 273check_process() 274{ 275 _procname=$1 276 _interpreter=$2 277 if [ -z "$_procname" ]; then 278 err 3 'USAGE: check_process procname [interpreter]' 279 fi 280 _find_processes $_procname ${_interpreter:-.} '-ax' 281} 282 283# 284# _find_processes procname interpreter psargs 285# Search for procname in the output of ps generated by psargs. 286# Prints the PIDs of any matching processes, space separated. 287# 288# If interpreter == ".", check the following variations of procname 289# against the first word of each command: 290# procname 291# `basename procname` 292# `basename procname` + ":" 293# "(" + `basename procname` + ")" 294# "[" + `basename procname` + "]" 295# 296# If interpreter != ".", read the first line of procname, remove the 297# leading #!, normalise whitespace, append procname, and attempt to 298# match that against each command, either as is, or with extra words 299# at the end. As an alternative, to deal with interpreted daemons 300# using perl, the basename of the interpreter plus a colon is also 301# tried as the prefix to procname. 302# 303_find_processes() 304{ 305 if [ $# -ne 3 ]; then 306 err 3 'USAGE: _find_processes procname interpreter psargs' 307 fi 308 _procname=$1 309 _interpreter=$2 310 _psargs=$3 311 312 _pref= 313 if [ $_interpreter != "." ]; then # an interpreted script 314 _script="${_chroot}${_chroot:+/}$_procname" 315 if [ -r "$_script" ]; then 316 read _interp < $_script # read interpreter name 317 case "$_interp" in 318 \#!*) 319 _interp=${_interp#\#!} # strip #! 320 set -- $_interp 321 case $1 in 322 */bin/env) 323 shift # drop env to get real name 324 ;; 325 esac 326 if [ $_interpreter != $1 ]; then 327 warn "\$command_interpreter $_interpreter != $1" 328 fi 329 ;; 330 *) 331 warn "no shebang line in $_script" 332 set -- $_interpreter 333 ;; 334 esac 335 else 336 warn "cannot read shebang line from $_script" 337 set -- $_interpreter 338 fi 339 _interp="$* $_procname" # cleanup spaces, add _procname 340 _interpbn=${1##*/} 341 _fp_args='_argv' 342 _fp_match='case "$_argv" in 343 ${_interp}|"${_interp} "*|"[${_interpbn}]"|"${_interpbn}: ${_procname}"*)' 344 else # a normal daemon 345 _procnamebn=${_procname##*/} 346 _fp_args='_arg0 _argv' 347 _fp_match='case "$_arg0" in 348 $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})"|"[${_procnamebn}]")' 349 fi 350 351 _proccheck="\ 352 $PS 2>/dev/null -o pid= -o jid= -o command= $_psargs"' | 353 while read _npid _jid '"$_fp_args"'; do 354 '"$_fp_match"' 355 if [ "$JID" -eq "$_jid" ]; 356 then echo -n "$_pref$_npid"; 357 _pref=" "; 358 fi 359 ;; 360 esac 361 done' 362 363# debug "in _find_processes: proccheck is ($_proccheck)." 364 eval $_proccheck 365} 366 367# sort_lite [-b] [-n] [-k POS] [-t SEP] 368# A lite version of sort(1) (supporting a few options) that can be used 369# before the real sort(1) is available (e.g., in scripts that run prior 370# to mountcritremote). Requires only shell built-in functionality. 371# 372sort_lite() 373{ 374 local funcname=sort_lite 375 local sort_sep="$IFS" sort_ignore_leading_space= 376 local sort_field=0 sort_strict_fields= sort_numeric= 377 local nitems=0 skip_leading=0 trim= 378 379 local OPTIND flag 380 while getopts bnk:t: flag; do 381 case "$flag" in 382 b) sort_ignore_leading_space=1 ;; 383 n) sort_numeric=1 sort_ignore_leading_space=1 ;; 384 k) sort_field="${OPTARG%%,*}" ;; # only up to first comma 385 # NB: Unlike sort(1) only one POS allowed 386 t) sort_sep="$OPTARG" 387 if [ ${#sort_sep} -gt 1 ]; then 388 echo "$funcname: multi-character tab \`$sort_sep'" >&2 389 return 1 390 fi 391 sort_strict_fields=1 392 ;; 393 \?) return 1 ;; 394 esac 395 done 396 shift $(( $OPTIND - 1 )) 397 398 # Create transformation pattern to trim leading text if desired 399 case "$sort_field" in 400 ""|[!0-9]*|*[!0-9.]*) 401 echo "$funcname: invalid sort field \`$sort_field'" >&2 402 return 1 403 ;; 404 *.*) 405 skip_leading=${sort_field#*.} sort_field=${sort_field%%.*} 406 while [ ${skip_leading:-0} -gt 1 ] 2> /dev/null; do 407 trim="$trim?" skip_leading=$(( $skip_leading - 1 )) 408 done 409 esac 410 411 # Copy input to series of local numbered variables 412 # NB: IFS of NULL preserves leading whitespace 413 local LINE 414 while IFS= read -r LINE || [ "$LINE" ]; do 415 nitems=$(( $nitems + 1 )) 416 local src_$nitems="$LINE" 417 done 418 419 # 420 # Sort numbered locals using insertion sort 421 # 422 local curitem curitem_orig curitem_mod curitem_haskey 423 local dest dest_orig dest_mod dest_haskey 424 local d gt n 425 local i=1 426 while [ $i -le $nitems ]; do 427 curitem_haskey=1 # Assume sort field (-k POS) exists 428 eval curitem=\"\$src_$i\" 429 curitem_mod="$curitem" # for modified comparison 430 curitem_orig="$curitem" # for original comparison 431 432 # Trim leading whitespace if desired 433 if [ "$sort_ignore_leading_space" ]; then 434 while case "$curitem_orig" in 435 [$IFS]*) : ;; *) false; esac 436 do 437 curitem_orig="${curitem_orig#?}" 438 done 439 curitem_mod="$curitem_orig" 440 fi 441 442 # Shift modified comparison value if sort field (-k POS) is > 1 443 n=$sort_field 444 while [ $n -gt 1 ]; do 445 case "$curitem_mod" in 446 *[$sort_sep]*) 447 # Cut text up-to (and incl.) first separator 448 curitem_mod="${curitem_mod#*[$sort_sep]}" 449 450 # Skip NULLs unless strict field splitting 451 [ "$sort_strict_fields" ] || 452 [ "${curitem_mod%%[$sort_sep]*}" ] || 453 [ $n -eq 2 ] || 454 continue 455 ;; 456 *) 457 # Asked for a field that doesn't exist 458 curitem_haskey= break 459 esac 460 n=$(( $n - 1 )) 461 done 462 463 # Trim trailing words if sort field >= 1 464 [ $sort_field -ge 1 -a "$sort_numeric" ] && 465 curitem_mod="${curitem_mod%%[$sort_sep]*}" 466 467 # Apply optional trim (-k POS.TRIM) to cut leading characters 468 curitem_mod="${curitem_mod#$trim}" 469 470 # Determine the type of modified comparison to use initially 471 # NB: Prefer numerical if requested but fallback to standard 472 case "$curitem_mod" in 473 ""|[!0-9]*) # NULL or begins with non-number 474 gt=">" 475 [ "$sort_numeric" ] && curitem_mod=0 476 ;; 477 *) 478 if [ "$sort_numeric" ]; then 479 gt="-gt" 480 curitem_mod="${curitem_mod%%[!0-9]*}" 481 # NB: trailing non-digits removed 482 # otherwise numeric comparison fails 483 else 484 gt=">" 485 fi 486 esac 487 488 # If first time through, short-circuit below position-search 489 if [ $i -le 1 ]; then 490 d=0 491 else 492 d=1 493 fi 494 495 # 496 # Find appropriate element position 497 # 498 while [ $d -gt 0 ] 499 do 500 dest_haskey=$curitem_haskey 501 eval dest=\"\$dest_$d\" 502 dest_mod="$dest" # for modified comparison 503 dest_orig="$dest" # for original comparison 504 505 # Trim leading whitespace if desired 506 if [ "$sort_ignore_leading_space" ]; then 507 while case "$dest_orig" in 508 [$IFS]*) : ;; *) false; esac 509 do 510 dest_orig="${dest_orig#?}" 511 done 512 dest_mod="$dest_orig" 513 fi 514 515 # Shift modified value if sort field (-k POS) is > 1 516 n=$sort_field 517 while [ $n -gt 1 ]; do 518 case "$dest_mod" in 519 *[$sort_sep]*) 520 # Cut text up-to (and incl.) 1st sep 521 dest_mod="${dest_mod#*[$sort_sep]}" 522 523 # Skip NULLs unless strict fields 524 [ "$sort_strict_fields" ] || 525 [ "${dest_mod%%[$sort_sep]*}" ] || 526 [ $n -eq 2 ] || 527 continue 528 ;; 529 *) 530 # Asked for a field that doesn't exist 531 dest_haskey= break 532 esac 533 n=$(( $n - 1 )) 534 done 535 536 # Trim trailing words if sort field >= 1 537 [ $sort_field -ge 1 -a "$sort_numeric" ] && 538 dest_mod="${dest_mod%%[$sort_sep]*}" 539 540 # Apply optional trim (-k POS.TRIM), cut leading chars 541 dest_mod="${dest_mod#$trim}" 542 543 # Determine type of modified comparison to use 544 # NB: Prefer numerical if requested, fallback to std 545 case "$dest_mod" in 546 ""|[!0-9]*) # NULL or begins with non-number 547 gt=">" 548 [ "$sort_numeric" ] && dest_mod=0 549 ;; 550 *) 551 if [ "$sort_numeric" ]; then 552 gt="-gt" 553 dest_mod="${dest_mod%%[!0-9]*}" 554 # NB: kill trailing non-digits 555 # for numeric comparison safety 556 else 557 gt=">" 558 fi 559 esac 560 561 # Break if we've found the proper element position 562 if [ "$curitem_haskey" -a "$dest_haskey" ]; then 563 if [ "$dest_mod" = "$curitem_mod" ]; then 564 [ "$dest_orig" ">" "$curitem_orig" ] && 565 break 566 elif [ "$dest_mod" $gt "$curitem_mod" ] \ 567 2> /dev/null 568 then 569 break 570 fi 571 else 572 [ "$dest_orig" ">" "$curitem_orig" ] && break 573 fi 574 575 # Break if we've hit the end 576 [ $d -ge $i ] && break 577 578 d=$(( $d + 1 )) 579 done 580 581 # Shift remaining positions forward, making room for new item 582 n=$i 583 while [ $n -ge $d ]; do 584 # Shift destination item forward one placement 585 eval dest_$(( $n + 1 ))=\"\$dest_$n\" 586 n=$(( $n - 1 )) 587 done 588 589 # Place the element 590 if [ $i -eq 1 ]; then 591 local dest_1="$curitem" 592 else 593 local dest_$d="$curitem" 594 fi 595 596 i=$(( $i + 1 )) 597 done 598 599 # Print sorted results 600 d=1 601 while [ $d -le $nitems ]; do 602 eval echo \"\$dest_$d\" 603 d=$(( $d + 1 )) 604 done 605} 606 607# 608# wait_for_pids pid [pid ...] 609# spins until none of the pids exist 610# 611wait_for_pids() 612{ 613 local _list _prefix _nlist _j 614 615 _list="$@" 616 if [ -z "$_list" ]; then 617 return 618 fi 619 _prefix= 620 while true; do 621 _nlist=""; 622 for _j in $_list; do 623 if kill -0 $_j 2>/dev/null; then 624 _nlist="${_nlist}${_nlist:+ }$_j" 625 [ -n "$_prefix" ] && sleep 1 626 fi 627 done 628 if [ -z "$_nlist" ]; then 629 break 630 fi 631 _list=$_nlist 632 echo -n ${_prefix:-"Waiting for PIDS: "}$_list 633 _prefix=", " 634 pwait $_list 2>/dev/null 635 done 636 if [ -n "$_prefix" ]; then 637 echo "." 638 fi 639} 640 641# 642# get_pidfile_from_conf string file 643# 644# Takes a string to search for in the specified file. 645# Ignores lines with traditional comment characters. 646# 647# Example: 648# 649# if get_pidfile_from_conf string file; then 650# pidfile="$_pidfile_from_conf" 651# else 652# pidfile='appropriate default' 653# fi 654# 655get_pidfile_from_conf() 656{ 657 if [ -z "$1" -o -z "$2" ]; then 658 err 3 "USAGE: get_pidfile_from_conf string file ($name)" 659 fi 660 661 local string file line 662 663 string="$1" ; file="$2" 664 665 if [ ! -s "$file" ]; then 666 err 3 "get_pidfile_from_conf: $file does not exist ($name)" 667 fi 668 669 while read line; do 670 case "$line" in 671 *[#\;]*${string}*) continue ;; 672 *${string}*) break ;; 673 esac 674 done < $file 675 676 if [ -n "$line" ]; then 677 line=${line#*/} 678 _pidfile_from_conf="/${line%%[\"\;]*}" 679 else 680 return 1 681 fi 682} 683 684# 685# check_startmsgs 686# If rc_quiet is set (usually as a result of using faststart at 687# boot time) check if rc_startmsgs is enabled. 688# 689check_startmsgs() 690{ 691 if [ -n "$rc_quiet" ]; then 692 checkyesno rc_startmsgs 693 else 694 return 0 695 fi 696} 697 698# 699# run_rc_command argument 700# Search for argument in the list of supported commands, which is: 701# "start stop restart rcvar status poll ${extra_commands}" 702# If there's a match, run ${argument}_cmd or the default method 703# (see below). 704# 705# If argument has a given prefix, then change the operation as follows: 706# Prefix Operation 707# ------ --------- 708# fast Skip the pid check, and set rc_fast=yes, rc_quiet=yes 709# force Set ${rcvar} to YES, and set rc_force=yes 710# one Set ${rcvar} to YES 711# quiet Don't output some diagnostics, and set rc_quiet=yes 712# 713# The following globals are used: 714# 715# Name Needed Purpose 716# ---- ------ ------- 717# name y Name of script. 718# 719# command n Full path to command. 720# Not needed if ${rc_arg}_cmd is set for 721# each keyword. 722# 723# command_args n Optional args/shell directives for command. 724# 725# command_interpreter n If not empty, command is interpreted, so 726# call check_{pidfile,process}() appropriately. 727# 728# desc n Description of script. 729# 730# extra_commands n List of extra commands supported. 731# 732# pidfile n If set, use check_pidfile $pidfile $command, 733# otherwise use check_process $command. 734# In either case, only check if $command is set. 735# 736# procname n Process name to check for instead of $command. 737# 738# rcvar n This is checked with checkyesno to determine 739# if the action should be run. 740# 741# ${name}_program n Full path to command. 742# Meant to be used in /etc/rc.conf to override 743# ${command}. 744# 745# ${name}_chroot n Directory to chroot to before running ${command} 746# Requires /usr to be mounted. 747# 748# ${name}_chdir n Directory to cd to before running ${command} 749# (if not using ${name}_chroot). 750# 751# ${name}_flags n Arguments to call ${command} with. 752# NOTE: $flags from the parent environment 753# can be used to override this. 754# 755# ${name}_env n Environment variables to run ${command} with. 756# 757# ${name}_env_file n File to source variables to run ${command} with. 758# 759# ${name}_fib n Routing table number to run ${command} with. 760# 761# ${name}_nice n Nice level to run ${command} at. 762# 763# ${name}_oomprotect n Don't kill ${command} when swap space is exhausted. 764# 765# ${name}_user n User to run ${command} as, using su(1) if not 766# using ${name}_chroot. 767# Requires /usr to be mounted. 768# 769# ${name}_group n Group to run chrooted ${command} as. 770# Requires /usr to be mounted. 771# 772# ${name}_groups n Comma separated list of supplementary groups 773# to run the chrooted ${command} with. 774# Requires /usr to be mounted. 775# 776# ${name}_prepend n Command added before ${command}. 777# 778# ${name}_login_class n Login class to use, else "daemon". 779# 780# ${name}_limits n limits(1) to apply to ${command}. 781# 782# ${rc_arg}_cmd n If set, use this as the method when invoked; 783# Otherwise, use default command (see below) 784# 785# ${rc_arg}_precmd n If set, run just before performing the 786# ${rc_arg}_cmd method in the default 787# operation (i.e, after checking for required 788# bits and process (non)existence). 789# If this completes with a non-zero exit code, 790# don't run ${rc_arg}_cmd. 791# 792# ${rc_arg}_postcmd n If set, run just after performing the 793# ${rc_arg}_cmd method, if that method 794# returned a zero exit code. 795# 796# required_dirs n If set, check for the existence of the given 797# directories before running a (re)start command. 798# 799# required_files n If set, check for the readability of the given 800# files before running a (re)start command. 801# 802# required_modules n If set, ensure the given kernel modules are 803# loaded before running a (re)start command. 804# The check and possible loads are actually 805# done after start_precmd so that the modules 806# aren't loaded in vain, should the precmd 807# return a non-zero status to indicate a error. 808# If a word in the list looks like "foo:bar", 809# "foo" is the KLD file name and "bar" is the 810# module name. If a word looks like "foo~bar", 811# "foo" is the KLD file name and "bar" is a 812# egrep(1) pattern matching the module name. 813# Otherwise the module name is assumed to be 814# the same as the KLD file name, which is most 815# common. See load_kld(). 816# 817# required_vars n If set, perform checkyesno on each of the 818# listed variables before running the default 819# (re)start command. 820# 821# Default behaviour for a given argument, if no override method is 822# provided: 823# 824# Argument Default behaviour 825# -------- ----------------- 826# start if !running && checkyesno ${rcvar} 827# ${command} 828# 829# stop if ${pidfile} 830# rc_pid=$(check_pidfile $pidfile $command) 831# else 832# rc_pid=$(check_process $command) 833# kill $sig_stop $rc_pid 834# wait_for_pids $rc_pid 835# ($sig_stop defaults to TERM.) 836# 837# reload Similar to stop, except use $sig_reload instead, 838# and doesn't wait_for_pids. 839# $sig_reload defaults to HUP. 840# Note that `reload' isn't provided by default, 841# it should be enabled via $extra_commands. 842# 843# restart Run `stop' then `start'. 844# 845# status Show if ${command} is running, etc. 846# 847# poll Wait for ${command} to exit. 848# 849# rcvar Display what rc.conf variable is used (if any). 850# 851# enabled Return true if the service is enabled. 852# 853# describe Show the service's description 854# 855# extracommands Show the service's extra commands 856# 857# Variables available to methods, and after run_rc_command() has 858# completed: 859# 860# Variable Purpose 861# -------- ------- 862# rc_arg Argument to command, after fast/force/one processing 863# performed 864# 865# rc_flags Flags to start the default command with. 866# Defaults to ${name}_flags, unless overridden 867# by $flags from the environment. 868# This variable may be changed by the precmd method. 869# 870# rc_pid PID of command (if appropriate) 871# 872# rc_fast Not empty if "fast" was provided (q.v.) 873# 874# rc_force Not empty if "force" was provided (q.v.) 875# 876# rc_quiet Not empty if "quiet" was provided 877# 878# 879run_rc_command() 880{ 881 _return=0 882 rc_arg=$1 883 if [ -z "$name" ]; then 884 err 3 'run_rc_command: $name is not set.' 885 fi 886 887 # Don't repeat the first argument when passing additional command- 888 # line arguments to the command subroutines. 889 # 890 shift 1 891 rc_extra_args="$*" 892 893 _rc_prefix= 894 case "$rc_arg" in 895 fast*) # "fast" prefix; don't check pid 896 rc_arg=${rc_arg#fast} 897 rc_fast=yes 898 rc_quiet=yes 899 ;; 900 force*) # "force" prefix; always run 901 rc_force=yes 902 _rc_prefix=force 903 rc_arg=${rc_arg#${_rc_prefix}} 904 if [ -n "${rcvar}" ]; then 905 eval ${rcvar}=YES 906 fi 907 ;; 908 one*) # "one" prefix; set ${rcvar}=yes 909 _rc_prefix=one 910 rc_arg=${rc_arg#${_rc_prefix}} 911 if [ -n "${rcvar}" ]; then 912 eval ${rcvar}=YES 913 fi 914 ;; 915 quiet*) # "quiet" prefix; omit some messages 916 _rc_prefix=quiet 917 rc_arg=${rc_arg#${_rc_prefix}} 918 rc_quiet=yes 919 ;; 920 esac 921 922 eval _override_command=\$${name}_program 923 command=${_override_command:-$command} 924 925 _keywords="start stop restart rcvar enabled describe extracommands $extra_commands" 926 rc_pid= 927 _pidcmd= 928 _procname=${procname:-${command}} 929 930 # setup pid check command 931 if [ -n "$_procname" ]; then 932 if [ -n "$pidfile" ]; then 933 _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')' 934 else 935 _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')' 936 fi 937 _keywords="${_keywords} status poll" 938 fi 939 940 if [ -z "$rc_arg" ]; then 941 rc_usage $_keywords 942 fi 943 944 if [ "$rc_arg" = "enabled" ] ; then 945 checkyesno ${rcvar} 946 return $? 947 fi 948 949 if [ -n "$flags" ]; then # allow override from environment 950 rc_flags=$flags 951 else 952 eval rc_flags=\$${name}_flags 953 fi 954 eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \ 955 _nice=\$${name}_nice _user=\$${name}_user \ 956 _group=\$${name}_group _groups=\$${name}_groups \ 957 _fib=\$${name}_fib _env=\$${name}_env \ 958 _prepend=\$${name}_prepend _login_class=\${${name}_login_class:-daemon} \ 959 _limits=\$${name}_limits _oomprotect=\$${name}_oomprotect \ 960 _env_file=\$${name}_env_file 961 962 if [ -n "$_env_file" ] && [ -r "${_env_file}" ]; then # load env from file 963 set -a 964 . $_env_file 965 set +a 966 fi 967 968 if [ -n "$_user" ]; then # unset $_user if running as that user 969 if [ "$_user" = "$(eval $IDCMD)" ]; then 970 unset _user 971 fi 972 fi 973 974 [ -z "$autoboot" ] && eval $_pidcmd # determine the pid if necessary 975 976 for _elem in $_keywords; do 977 if [ "$_elem" != "$rc_arg" ]; then 978 continue 979 fi 980 # if ${rcvar} is set, $1 is not "rcvar" and not "describe" 981 # and ${rc_pid} is not set, then run 982 # checkyesno ${rcvar} 983 # and return if that failed 984 # 985 if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" -a "$rc_arg" != "stop" \ 986 -a "$rc_arg" != "describe" ] || 987 [ -n "${rcvar}" -a "$rc_arg" = "stop" -a -z "${rc_pid}" ]; then 988 if ! checkyesno ${rcvar}; then 989 if [ -n "${rc_quiet}" ]; then 990 return 0 991 fi 992 echo -n "Cannot '${rc_arg}' $name. Set ${rcvar} to " 993 echo -n "YES in /etc/rc.conf or use 'one${rc_arg}' " 994 echo "instead of '${rc_arg}'." 995 return 0 996 fi 997 fi 998 999 if [ $rc_arg = "start" -a -z "$rc_fast" -a -n "$rc_pid" ]; then 1000 if [ -z "$rc_quiet" ]; then 1001 echo 1>&2 "${name} already running? " \ 1002 "(pid=$rc_pid)." 1003 fi 1004 return 1 1005 fi 1006 1007 # if there's a custom ${XXX_cmd}, 1008 # run that instead of the default 1009 # 1010 eval _cmd=\$${rc_arg}_cmd \ 1011 _precmd=\$${rc_arg}_precmd \ 1012 _postcmd=\$${rc_arg}_postcmd 1013 1014 if [ -n "$_cmd" ]; then 1015 _run_rc_precmd || return 1 1016 _run_rc_doit "$_cmd $rc_extra_args" || return 1 1017 _run_rc_postcmd 1018 return $_return 1019 fi 1020 1021 case "$rc_arg" in # default operations... 1022 1023 describe) 1024 if [ -n "$desc" ]; then 1025 echo "$desc" 1026 fi 1027 ;; 1028 1029 extracommands) 1030 echo "$extra_commands" 1031 ;; 1032 1033 status) 1034 _run_rc_precmd || return 1 1035 if [ -n "$rc_pid" ]; then 1036 echo "${name} is running as pid $rc_pid." 1037 else 1038 echo "${name} is not running." 1039 return 1 1040 fi 1041 _run_rc_postcmd 1042 ;; 1043 1044 start) 1045 if [ ! -x "${_chroot}${_chroot:+/}${command}" ]; then 1046 warn "run_rc_command: cannot run $command" 1047 return 1 1048 fi 1049 1050 if ! _run_rc_precmd; then 1051 warn "failed precmd routine for ${name}" 1052 return 1 1053 fi 1054 1055 # setup the full command to run 1056 # 1057 check_startmsgs && echo "Starting ${name}." 1058 if [ -n "$_chroot" ]; then 1059 _cd= 1060 _doit="\ 1061${_nice:+nice -n $_nice }\ 1062${_fib:+setfib -F $_fib }\ 1063${_env:+env $_env }\ 1064chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\ 1065$_chroot $command $rc_flags $command_args" 1066 else 1067 _cd="${_chdir:+cd $_chdir && }" 1068 _doit="\ 1069${_fib:+setfib -F $_fib }\ 1070${_env:+env $_env }\ 1071$command $rc_flags $command_args" 1072 if [ -n "$_user" ]; then 1073 _doit="su -m $_user -c 'sh -c \"$_doit\"'" 1074 fi 1075 if [ -n "$_nice" ]; then 1076 if [ -z "$_user" ]; then 1077 _doit="sh -c \"$_doit\"" 1078 fi 1079 _doit="nice -n $_nice $_doit" 1080 fi 1081 if [ -n "$_prepend" ]; then 1082 _doit="$_prepend $_doit" 1083 fi 1084 fi 1085 1086 # Prepend default limits 1087 _doit="$_cd limits -C $_login_class $_limits $_doit" 1088 1089 # run the full command 1090 # 1091 if ! _run_rc_doit "$_doit"; then 1092 warn "failed to start ${name}" 1093 return 1 1094 fi 1095 1096 # finally, run postcmd 1097 # 1098 _run_rc_postcmd 1099 ;; 1100 1101 stop) 1102 if [ -z "$rc_pid" ]; then 1103 [ -n "$rc_fast" ] && return 0 1104 _run_rc_notrunning 1105 return 1 1106 fi 1107 1108 _run_rc_precmd || return 1 1109 1110 # send the signal to stop 1111 # 1112 echo "Stopping ${name}." 1113 _doit=$(_run_rc_killcmd "${sig_stop:-TERM}") 1114 _run_rc_doit "$_doit" || return 1 1115 1116 # wait for the command to exit, 1117 # and run postcmd. 1118 wait_for_pids $rc_pid 1119 1120 _run_rc_postcmd 1121 ;; 1122 1123 reload) 1124 if [ -z "$rc_pid" ]; then 1125 _run_rc_notrunning 1126 return 1 1127 fi 1128 1129 _run_rc_precmd || return 1 1130 1131 _doit=$(_run_rc_killcmd "${sig_reload:-HUP}") 1132 _run_rc_doit "$_doit" || return 1 1133 1134 _run_rc_postcmd 1135 ;; 1136 1137 restart) 1138 # prevent restart being called more 1139 # than once by any given script 1140 # 1141 if ${_rc_restart_done:-false}; then 1142 return 0 1143 fi 1144 _rc_restart_done=true 1145 1146 _run_rc_precmd || return 1 1147 1148 # run those in a subshell to keep global variables 1149 ( run_rc_command ${_rc_prefix}stop $rc_extra_args ) 1150 ( run_rc_command ${_rc_prefix}start $rc_extra_args ) 1151 _return=$? 1152 [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 1153 1154 _run_rc_postcmd 1155 ;; 1156 1157 poll) 1158 _run_rc_precmd || return 1 1159 if [ -n "$rc_pid" ]; then 1160 wait_for_pids $rc_pid 1161 fi 1162 _run_rc_postcmd 1163 ;; 1164 1165 rcvar) 1166 echo -n "# $name" 1167 if [ -n "$desc" ]; then 1168 echo " : $desc" 1169 else 1170 echo "" 1171 fi 1172 echo "#" 1173 # Get unique vars in $rcvar $rcvars 1174 for _v in $rcvar $rcvars; do 1175 case $v in 1176 $_v\ *|\ *$_v|*\ $_v\ *) ;; 1177 *) v="${v# } $_v" ;; 1178 esac 1179 done 1180 1181 # Display variables. 1182 for _v in $v; do 1183 if [ -z "$_v" ]; then 1184 continue 1185 fi 1186 1187 eval _desc=\$${_v}_desc 1188 eval _defval=\$${_v}_defval 1189 _h="-" 1190 1191 eval echo \"$_v=\\\"\$$_v\\\"\" 1192 # decode multiple lines of _desc 1193 while [ -n "$_desc" ]; do 1194 case $_desc in 1195 *^^*) 1196 echo "# $_h ${_desc%%^^*}" 1197 _desc=${_desc#*^^} 1198 _h=" " 1199 ;; 1200 *) 1201 echo "# $_h ${_desc}" 1202 break 1203 ;; 1204 esac 1205 done 1206 echo "# (default: \"$_defval\")" 1207 done 1208 echo "" 1209 ;; 1210 1211 *) 1212 rc_usage $_keywords 1213 ;; 1214 1215 esac 1216 1217 # Apply protect(1) to the PID if ${name}_oomprotect is set. 1218 case "$rc_arg" in 1219 start) 1220 # We cannot use protect(1) inside jails. 1221 if [ -n "$_oomprotect" ] && [ -f "${PROTECT}" ] && 1222 [ "$(sysctl -n security.jail.jailed)" -eq 0 ]; then 1223 pid=$(check_process $command) 1224 case $_oomprotect in 1225 [Aa][Ll][Ll]) 1226 ${PROTECT} -i -p ${pid} 1227 ;; 1228 [Yy][Ee][Ss]) 1229 ${PROTECT} -p ${pid} 1230 ;; 1231 esac 1232 fi 1233 ;; 1234 esac 1235 1236 return $_return 1237 done 1238 1239 echo 1>&2 "$0: unknown directive '$rc_arg'." 1240 rc_usage $_keywords 1241 # not reached 1242} 1243 1244# 1245# Helper functions for run_rc_command: common code. 1246# They use such global variables besides the exported rc_* ones: 1247# 1248# name R/W 1249# ------------------ 1250# _precmd R 1251# _postcmd R 1252# _return W 1253# 1254_run_rc_precmd() 1255{ 1256 check_required_before "$rc_arg" || return 1 1257 1258 if [ -n "$_precmd" ]; then 1259 debug "run_rc_command: ${rc_arg}_precmd: $_precmd $rc_extra_args" 1260 eval "$_precmd $rc_extra_args" 1261 _return=$? 1262 1263 # If precmd failed and force isn't set, request exit. 1264 if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then 1265 return 1 1266 fi 1267 fi 1268 1269 check_required_after "$rc_arg" || return 1 1270 1271 return 0 1272} 1273 1274_run_rc_postcmd() 1275{ 1276 if [ -n "$_postcmd" ]; then 1277 debug "run_rc_command: ${rc_arg}_postcmd: $_postcmd $rc_extra_args" 1278 eval "$_postcmd $rc_extra_args" 1279 _return=$? 1280 fi 1281 return 0 1282} 1283 1284_run_rc_doit() 1285{ 1286 debug "run_rc_command: doit: $*" 1287 eval "$@" 1288 _return=$? 1289 1290 # If command failed and force isn't set, request exit. 1291 if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then 1292 return 1 1293 fi 1294 1295 return 0 1296} 1297 1298_run_rc_notrunning() 1299{ 1300 local _pidmsg 1301 1302 if [ -n "$pidfile" ]; then 1303 _pidmsg=" (check $pidfile)." 1304 else 1305 _pidmsg= 1306 fi 1307 echo 1>&2 "${name} not running?${_pidmsg}" 1308} 1309 1310_run_rc_killcmd() 1311{ 1312 local _cmd 1313 1314 _cmd="kill -$1 $rc_pid" 1315 if [ -n "$_user" ]; then 1316 _cmd="su -m ${_user} -c 'sh -c \"${_cmd}\"'" 1317 fi 1318 echo "$_cmd" 1319} 1320 1321# 1322# run_rc_script file arg 1323# Start the script `file' with `arg', and correctly handle the 1324# return value from the script. 1325# If `file' ends with `.sh' and lives in /etc/rc.d, ignore it as it's 1326# an old-style startup file. 1327# If `file' ends with `.sh' and does not live in /etc/rc.d, it's sourced 1328# into the current environment if $rc_fast_and_loose is set; otherwise 1329# it is run as a child process. 1330# If `file' appears to be a backup or scratch file, ignore it. 1331# Otherwise if it is executable run as a child process. 1332# 1333run_rc_script() 1334{ 1335 _file=$1 1336 _arg=$2 1337 if [ -z "$_file" -o -z "$_arg" ]; then 1338 err 3 'USAGE: run_rc_script file arg' 1339 fi 1340 1341 unset name command command_args command_interpreter \ 1342 extra_commands pidfile procname \ 1343 rcvar rcvars rcvars_obsolete required_dirs required_files \ 1344 required_vars 1345 eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd 1346 1347 case "$_file" in 1348 /etc/rc.d/*.sh) # no longer allowed in the base 1349 warn "Ignoring old-style startup script $_file" 1350 ;; 1351 *[~#]|*.OLD|*.bak|*.orig|*,v) # scratch file; skip 1352 warn "Ignoring scratch file $_file" 1353 ;; 1354 *) # run in subshell 1355 if [ -x $_file ]; then 1356 if [ -n "$rc_fast_and_loose" ]; then 1357 set $_arg; . $_file 1358 else 1359 ( trap "echo Script $_file interrupted >&2 ; kill -QUIT $$" 3 1360 trap "echo Script $_file interrupted >&2 ; exit 1" 2 1361 trap "echo Script $_file running >&2" 29 1362 set $_arg; . $_file ) 1363 fi 1364 fi 1365 ;; 1366 esac 1367} 1368 1369# 1370# load_rc_config [service] 1371# Source in the configuration file(s) for a given service. 1372# If no service is specified, only the global configuration 1373# file(s) will be loaded. 1374# 1375load_rc_config() 1376{ 1377 local _name _rcvar_val _var _defval _v _msg _new _d 1378 _name=$1 1379 1380 if ${_rc_conf_loaded:-false}; then 1381 : 1382 else 1383 if [ -r /etc/defaults/rc.conf ]; then 1384 debug "Sourcing /etc/defaults/rc.conf" 1385 . /etc/defaults/rc.conf 1386 source_rc_confs 1387 elif [ -r /etc/rc.conf ]; then 1388 debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)." 1389 . /etc/rc.conf 1390 fi 1391 _rc_conf_loaded=true 1392 fi 1393 1394 # If a service name was specified, attempt to load 1395 # service-specific configuration 1396 if [ -n "$_name" ] ; then 1397 for _d in /etc ${local_startup}; do 1398 _d=${_d%/rc.d} 1399 if [ -f ${_d}/rc.conf.d/"$_name" ]; then 1400 debug "Sourcing ${_d}/rc.conf.d/$_name" 1401 . ${_d}/rc.conf.d/"$_name" 1402 elif [ -d ${_d}/rc.conf.d/"$_name" ] ; then 1403 local _rc 1404 for _rc in ${_d}/rc.conf.d/"$_name"/* ; do 1405 if [ -f "$_rc" ] ; then 1406 debug "Sourcing $_rc" 1407 . "$_rc" 1408 fi 1409 done 1410 fi 1411 done 1412 fi 1413 1414 # Set defaults if defined. 1415 for _var in $rcvar $rcvars; do 1416 eval _defval=\$${_var}_defval 1417 if [ -n "$_defval" ]; then 1418 eval : \${$_var:=\$${_var}_defval} 1419 fi 1420 done 1421 1422 # check obsolete rc.conf variables 1423 for _var in $rcvars_obsolete; do 1424 eval _v=\$$_var 1425 eval _msg=\$${_var}_obsolete_msg 1426 eval _new=\$${_var}_newvar 1427 case $_v in 1428 "") 1429 ;; 1430 *) 1431 if [ -z "$_new" ]; then 1432 _msg="Ignored." 1433 else 1434 eval $_new=\"\$$_var\" 1435 if [ -z "$_msg" ]; then 1436 _msg="Use \$$_new instead." 1437 fi 1438 fi 1439 warn "\$$_var is obsolete. $_msg" 1440 ;; 1441 esac 1442 done 1443} 1444 1445# 1446# load_rc_config_var name var 1447# Read the rc.conf(5) var for name and set in the 1448# current shell, using load_rc_config in a subshell to prevent 1449# unwanted side effects from other variable assignments. 1450# 1451load_rc_config_var() 1452{ 1453 if [ $# -ne 2 ]; then 1454 err 3 'USAGE: load_rc_config_var name var' 1455 fi 1456 eval $(eval '( 1457 load_rc_config '$1' >/dev/null; 1458 if [ -n "${'$2'}" -o "${'$2'-UNSET}" != "UNSET" ]; then 1459 echo '$2'=\'\''${'$2'}\'\''; 1460 fi 1461 )' ) 1462} 1463 1464# 1465# rc_usage commands 1466# Print a usage string for $0, with `commands' being a list of 1467# valid commands. 1468# 1469rc_usage() 1470{ 1471 echo -n 1>&2 "Usage: $0 [fast|force|one|quiet](" 1472 1473 _sep= 1474 for _elem; do 1475 echo -n 1>&2 "$_sep$_elem" 1476 _sep="|" 1477 done 1478 echo 1>&2 ")" 1479 exit 1 1480} 1481 1482# 1483# err exitval message 1484# Display message to stderr and log to the syslog, and exit with exitval. 1485# 1486err() 1487{ 1488 exitval=$1 1489 shift 1490 1491 if [ -x /usr/bin/logger ]; then 1492 logger "$0: ERROR: $*" 1493 fi 1494 echo 1>&2 "$0: ERROR: $*" 1495 exit $exitval 1496} 1497 1498# 1499# warn message 1500# Display message to stderr and log to the syslog. 1501# 1502warn() 1503{ 1504 if [ -x /usr/bin/logger ]; then 1505 logger "$0: WARNING: $*" 1506 fi 1507 echo 1>&2 "$0: WARNING: $*" 1508} 1509 1510# 1511# info message 1512# Display informational message to stdout and log to syslog. 1513# 1514info() 1515{ 1516 case ${rc_info} in 1517 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 1518 if [ -x /usr/bin/logger ]; then 1519 logger "$0: INFO: $*" 1520 fi 1521 echo "$0: INFO: $*" 1522 ;; 1523 esac 1524} 1525 1526# 1527# debug message 1528# If debugging is enabled in rc.conf output message to stderr. 1529# BEWARE that you don't call any subroutine that itself calls this 1530# function. 1531# 1532debug() 1533{ 1534 case ${rc_debug} in 1535 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 1536 if [ -x /usr/bin/logger ]; then 1537 logger "$0: DEBUG: $*" 1538 fi 1539 echo 1>&2 "$0: DEBUG: $*" 1540 ;; 1541 esac 1542} 1543 1544# 1545# backup_file action file cur backup 1546# Make a backup copy of `file' into `cur', and save the previous 1547# version of `cur' as `backup'. 1548# 1549# The `action' keyword can be one of the following: 1550# 1551# add `file' is now being backed up (and is possibly 1552# being reentered into the backups system). `cur' 1553# is created. 1554# 1555# update `file' has changed and needs to be backed up. 1556# If `cur' exists, it is copied to `back' 1557# and then `file' is copied to `cur'. 1558# 1559# remove `file' is no longer being tracked by the backups 1560# system. `cur' is moved `back'. 1561# 1562# 1563backup_file() 1564{ 1565 _action=$1 1566 _file=$2 1567 _cur=$3 1568 _back=$4 1569 1570 case $_action in 1571 add|update) 1572 if [ -f $_cur ]; then 1573 cp -p $_cur $_back 1574 fi 1575 cp -p $_file $_cur 1576 chown root:wheel $_cur 1577 ;; 1578 remove) 1579 mv -f $_cur $_back 1580 ;; 1581 esac 1582} 1583 1584# make_symlink src link 1585# Make a symbolic link 'link' to src from basedir. If the 1586# directory in which link is to be created does not exist 1587# a warning will be displayed and an error will be returned. 1588# Returns 0 on success, 1 otherwise. 1589# 1590make_symlink() 1591{ 1592 local src link linkdir _me 1593 src="$1" 1594 link="$2" 1595 linkdir="`dirname $link`" 1596 _me="make_symlink()" 1597 1598 if [ -z "$src" -o -z "$link" ]; then 1599 warn "$_me: requires two arguments." 1600 return 1 1601 fi 1602 if [ ! -d "$linkdir" ]; then 1603 warn "$_me: the directory $linkdir does not exist." 1604 return 1 1605 fi 1606 if ! ln -sf $src $link; then 1607 warn "$_me: unable to make a symbolic link from $link to $src" 1608 return 1 1609 fi 1610 return 0 1611} 1612 1613# devfs_rulesets_from_file file 1614# Reads a set of devfs commands from file, and creates 1615# the specified rulesets with their rules. Returns non-zero 1616# if there was an error. 1617# 1618devfs_rulesets_from_file() 1619{ 1620 local file _err _me _opts 1621 file="$1" 1622 _me="devfs_rulesets_from_file" 1623 _err=0 1624 1625 if [ -z "$file" ]; then 1626 warn "$_me: you must specify a file" 1627 return 1 1628 fi 1629 if [ ! -e "$file" ]; then 1630 debug "$_me: no such file ($file)" 1631 return 0 1632 fi 1633 1634 # Disable globbing so that the rule patterns are not expanded 1635 # by accident with matching filesystem entries. 1636 _opts=$-; set -f 1637 1638 debug "reading rulesets from file ($file)" 1639 { while read line 1640 do 1641 case $line in 1642 \#*) 1643 continue 1644 ;; 1645 \[*\]*) 1646 rulenum=`expr "$line" : "\[.*=\([0-9]*\)\]"` 1647 if [ -z "$rulenum" ]; then 1648 warn "$_me: cannot extract rule number ($line)" 1649 _err=1 1650 break 1651 fi 1652 rulename=`expr "$line" : "\[\(.*\)=[0-9]*\]"` 1653 if [ -z "$rulename" ]; then 1654 warn "$_me: cannot extract rule name ($line)" 1655 _err=1 1656 break; 1657 fi 1658 eval $rulename=\$rulenum 1659 debug "found ruleset: $rulename=$rulenum" 1660 if ! /sbin/devfs rule -s $rulenum delset; then 1661 _err=1 1662 break 1663 fi 1664 ;; 1665 *) 1666 rulecmd="${line%%"\#*"}" 1667 # evaluate the command incase it includes 1668 # other rules 1669 if [ -n "$rulecmd" ]; then 1670 debug "adding rule ($rulecmd)" 1671 if ! eval /sbin/devfs rule -s $rulenum $rulecmd 1672 then 1673 _err=1 1674 break 1675 fi 1676 fi 1677 ;; 1678 esac 1679 if [ $_err -ne 0 ]; then 1680 debug "error in $_me" 1681 break 1682 fi 1683 done } < $file 1684 case $_opts in *f*) ;; *) set +f ;; esac 1685 return $_err 1686} 1687 1688# devfs_init_rulesets 1689# Initializes rulesets from configuration files. Returns 1690# non-zero if there was an error. 1691# 1692devfs_init_rulesets() 1693{ 1694 local file _me 1695 _me="devfs_init_rulesets" 1696 1697 # Go through this only once 1698 if [ -n "$devfs_rulesets_init" ]; then 1699 debug "$_me: devfs rulesets already initialized" 1700 return 1701 fi 1702 for file in $devfs_rulesets; do 1703 if ! devfs_rulesets_from_file $file; then 1704 warn "$_me: could not read rules from $file" 1705 return 1 1706 fi 1707 done 1708 devfs_rulesets_init=1 1709 debug "$_me: devfs rulesets initialized" 1710 return 0 1711} 1712 1713# devfs_set_ruleset ruleset [dir] 1714# Sets the default ruleset of dir to ruleset. The ruleset argument 1715# must be a ruleset name as specified in devfs.rules(5) file. 1716# Returns non-zero if it could not set it successfully. 1717# 1718devfs_set_ruleset() 1719{ 1720 local devdir rs _me 1721 [ -n "$1" ] && eval rs=\$$1 || rs= 1722 [ -n "$2" ] && devdir="-m "$2"" || devdir= 1723 _me="devfs_set_ruleset" 1724 1725 if [ -z "$rs" ]; then 1726 warn "$_me: you must specify a ruleset number" 1727 return 1 1728 fi 1729 debug "$_me: setting ruleset ($rs) on mount-point (${devdir#-m })" 1730 if ! /sbin/devfs $devdir ruleset $rs; then 1731 warn "$_me: unable to set ruleset $rs to ${devdir#-m }" 1732 return 1 1733 fi 1734 return 0 1735} 1736 1737# devfs_apply_ruleset ruleset [dir] 1738# Apply ruleset number $ruleset to the devfs mountpoint $dir. 1739# The ruleset argument must be a ruleset name as specified 1740# in a devfs.rules(5) file. Returns 0 on success or non-zero 1741# if it could not apply the ruleset. 1742# 1743devfs_apply_ruleset() 1744{ 1745 local devdir rs _me 1746 [ -n "$1" ] && eval rs=\$$1 || rs= 1747 [ -n "$2" ] && devdir="-m "$2"" || devdir= 1748 _me="devfs_apply_ruleset" 1749 1750 if [ -z "$rs" ]; then 1751 warn "$_me: you must specify a ruleset" 1752 return 1 1753 fi 1754 debug "$_me: applying ruleset ($rs) to mount-point (${devdir#-m })" 1755 if ! /sbin/devfs $devdir rule -s $rs applyset; then 1756 warn "$_me: unable to apply ruleset $rs to ${devdir#-m }" 1757 return 1 1758 fi 1759 return 0 1760} 1761 1762# devfs_domount dir [ruleset] 1763# Mount devfs on dir. If ruleset is specified it is set 1764# on the mount-point. It must also be a ruleset name as specified 1765# in a devfs.rules(5) file. Returns 0 on success. 1766# 1767devfs_domount() 1768{ 1769 local devdir rs _me 1770 devdir="$1" 1771 [ -n "$2" ] && rs=$2 || rs= 1772 _me="devfs_domount()" 1773 1774 if [ -z "$devdir" ]; then 1775 warn "$_me: you must specify a mount-point" 1776 return 1 1777 fi 1778 debug "$_me: mount-point is ($devdir), ruleset is ($rs)" 1779 if ! mount -t devfs dev "$devdir"; then 1780 warn "$_me: Unable to mount devfs on $devdir" 1781 return 1 1782 fi 1783 if [ -n "$rs" ]; then 1784 devfs_init_rulesets 1785 devfs_set_ruleset $rs $devdir 1786 devfs -m $devdir rule applyset 1787 fi 1788 return 0 1789} 1790 1791# Provide a function for normalizing the mounting of memory 1792# filesystems. This should allow the rest of the code here to remain 1793# as close as possible between 5-current and 4-stable. 1794# $1 = size 1795# $2 = mount point 1796# $3 = (optional) extra mdmfs flags 1797mount_md() 1798{ 1799 if [ -n "$3" ]; then 1800 flags="$3" 1801 fi 1802 /sbin/mdmfs $flags -s $1 ${mfs_type} $2 1803} 1804 1805# Code common to scripts that need to load a kernel module 1806# if it isn't in the kernel yet. Syntax: 1807# load_kld [-e regex] [-m module] file 1808# where -e or -m chooses the way to check if the module 1809# is already loaded: 1810# regex is egrep'd in the output from `kldstat -v', 1811# module is passed to `kldstat -m'. 1812# The default way is as though `-m file' were specified. 1813load_kld() 1814{ 1815 local _loaded _mod _opt _re 1816 1817 while getopts "e:m:" _opt; do 1818 case "$_opt" in 1819 e) _re="$OPTARG" ;; 1820 m) _mod="$OPTARG" ;; 1821 *) err 3 'USAGE: load_kld [-e regex] [-m module] file' ;; 1822 esac 1823 done 1824 shift $(($OPTIND - 1)) 1825 if [ $# -ne 1 ]; then 1826 err 3 'USAGE: load_kld [-e regex] [-m module] file' 1827 fi 1828 _mod=${_mod:-$1} 1829 _loaded=false 1830 if [ -n "$_re" ]; then 1831 if kldstat -v | egrep -q -e "$_re"; then 1832 _loaded=true 1833 fi 1834 else 1835 if kldstat -q -m "$_mod"; then 1836 _loaded=true 1837 fi 1838 fi 1839 if ! $_loaded; then 1840 if ! kldload "$1"; then 1841 warn "Unable to load kernel module $1" 1842 return 1 1843 else 1844 info "$1 kernel module loaded." 1845 fi 1846 else 1847 debug "load_kld: $1 kernel module already loaded." 1848 fi 1849 return 0 1850} 1851 1852# ltr str src dst [var] 1853# Change every $src in $str to $dst. 1854# Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor 1855# awk(1). If var is non-NULL, set it to the result. 1856ltr() 1857{ 1858 local _str _src _dst _out _com _var 1859 _str="$1" 1860 _src="$2" 1861 _dst="$3" 1862 _var="$4" 1863 _out="" 1864 1865 local IFS="${_src}" 1866 for _com in ${_str}; do 1867 if [ -z "${_out}" ]; then 1868 _out="${_com}" 1869 else 1870 _out="${_out}${_dst}${_com}" 1871 fi 1872 done 1873 if [ -n "${_var}" ]; then 1874 setvar "${_var}" "${_out}" 1875 else 1876 echo "${_out}" 1877 fi 1878} 1879 1880# Creates a list of providers for GELI encryption. 1881geli_make_list() 1882{ 1883 local devices devices2 1884 local provider mountpoint type options rest 1885 1886 # Create list of GELI providers from fstab. 1887 while read provider mountpoint type options rest ; do 1888 case ":${options}" in 1889 :*noauto*) 1890 noauto=yes 1891 ;; 1892 *) 1893 noauto=no 1894 ;; 1895 esac 1896 1897 case ":${provider}" in 1898 :#*) 1899 continue 1900 ;; 1901 *.eli) 1902 # Skip swap devices. 1903 if [ "${type}" = "swap" -o "${options}" = "sw" -o "${noauto}" = "yes" ]; then 1904 continue 1905 fi 1906 devices="${devices} ${provider}" 1907 ;; 1908 esac 1909 done < /etc/fstab 1910 1911 # Append providers from geli_devices. 1912 devices="${devices} ${geli_devices}" 1913 1914 for provider in ${devices}; do 1915 provider=${provider%.eli} 1916 provider=${provider#/dev/} 1917 devices2="${devices2} ${provider}" 1918 done 1919 1920 echo ${devices2} 1921} 1922 1923# Originally, root mount hold had to be released before mounting 1924# the root filesystem. This delayed the boot, so it was changed 1925# to only wait if the root device isn't readily available. This 1926# can result in rc scripts executing before all the devices - such 1927# as graid(8), or USB disks - can be accessed. This function can 1928# be used to explicitly wait for root mount holds to be released. 1929root_hold_wait() 1930{ 1931 local wait waited holders 1932 1933 waited=0 1934 while true; do 1935 holders="$(sysctl -n vfs.root_mount_hold)" 1936 if [ -z "${holders}" ]; then 1937 break; 1938 fi 1939 if [ ${waited} -eq 0 ]; then 1940 echo -n "Waiting ${root_hold_delay}s" \ 1941 "for the root mount holders: ${holders}" 1942 else 1943 echo -n . 1944 fi 1945 if [ ${waited} -ge ${root_hold_delay} ]; then 1946 echo 1947 break 1948 fi 1949 sleep 1 1950 waited=$(($waited + 1)) 1951 done 1952} 1953 1954# Find scripts in local_startup directories that use the old syntax 1955# 1956find_local_scripts_old() { 1957 zlist='' 1958 slist='' 1959 for dir in ${local_startup}; do 1960 if [ -d "${dir}" ]; then 1961 for file in ${dir}/[0-9]*.sh; do 1962 grep '^# PROVIDE:' $file >/dev/null 2>&1 && 1963 continue 1964 zlist="$zlist $file" 1965 done 1966 for file in ${dir}/[!0-9]*.sh; do 1967 grep '^# PROVIDE:' $file >/dev/null 2>&1 && 1968 continue 1969 slist="$slist $file" 1970 done 1971 fi 1972 done 1973} 1974 1975find_local_scripts_new() { 1976 local_rc='' 1977 for dir in ${local_startup}; do 1978 if [ -d "${dir}" ]; then 1979 for file in `grep -l '^# PROVIDE:' ${dir}/* 2>/dev/null`; do 1980 case "$file" in 1981 *.sample) ;; 1982 *) if [ -x "$file" ]; then 1983 local_rc="${local_rc} ${file}" 1984 fi 1985 ;; 1986 esac 1987 done 1988 fi 1989 done 1990} 1991 1992# check_required_{before|after} command 1993# Check for things required by the command before and after its precmd, 1994# respectively. The two separate functions are needed because some 1995# conditions should prevent precmd from being run while other things 1996# depend on precmd having already been run. 1997# 1998check_required_before() 1999{ 2000 local _f 2001 2002 case "$1" in 2003 start) 2004 for _f in $required_vars; do 2005 if ! checkyesno $_f; then 2006 warn "\$${_f} is not enabled." 2007 if [ -z "$rc_force" ]; then 2008 return 1 2009 fi 2010 fi 2011 done 2012 2013 for _f in $required_dirs; do 2014 if [ ! -d "${_f}/." ]; then 2015 warn "${_f} is not a directory." 2016 if [ -z "$rc_force" ]; then 2017 return 1 2018 fi 2019 fi 2020 done 2021 2022 for _f in $required_files; do 2023 if [ ! -r "${_f}" ]; then 2024 warn "${_f} is not readable." 2025 if [ -z "$rc_force" ]; then 2026 return 1 2027 fi 2028 fi 2029 done 2030 ;; 2031 esac 2032 2033 return 0 2034} 2035 2036check_required_after() 2037{ 2038 local _f _args 2039 2040 case "$1" in 2041 start) 2042 for _f in $required_modules; do 2043 case "${_f}" in 2044 *~*) _args="-e ${_f#*~} ${_f%%~*}" ;; 2045 *:*) _args="-m ${_f#*:} ${_f%%:*}" ;; 2046 *) _args="${_f}" ;; 2047 esac 2048 if ! load_kld ${_args}; then 2049 if [ -z "$rc_force" ]; then 2050 return 1 2051 fi 2052 fi 2053 done 2054 ;; 2055 esac 2056 2057 return 0 2058} 2059 2060# check_jail mib 2061# Return true if security.jail.$mib exists and set to 1. 2062 2063check_jail() 2064{ 2065 local _mib _v 2066 2067 _mib=$1 2068 if _v=$(${SYSCTL_N} "security.jail.$_mib" 2> /dev/null); then 2069 case $_v in 2070 1) return 0;; 2071 esac 2072 fi 2073 return 1 2074} 2075 2076# check_kern_features mib 2077# Return existence of kern.features.* sysctl MIB as true or 2078# false. The result will be cached in $_rc_cache_kern_features_ 2079# namespace. "0" means the kern.features.X exists. 2080 2081check_kern_features() 2082{ 2083 local _v 2084 2085 [ -n "$1" ] || return 1; 2086 eval _v=\$_rc_cache_kern_features_$1 2087 [ -n "$_v" ] && return "$_v"; 2088 2089 if ${SYSCTL_N} kern.features.$1 > /dev/null 2>&1; then 2090 eval _rc_cache_kern_features_$1=0 2091 return 0 2092 else 2093 eval _rc_cache_kern_features_$1=1 2094 return 1 2095 fi 2096} 2097 2098# check_namevarlist var 2099# Return "0" if ${name}_var is reserved in rc.subr. 2100 2101_rc_namevarlist="program chroot chdir env flags fib nice user group groups prepend" 2102check_namevarlist() 2103{ 2104 local _v 2105 2106 for _v in $_rc_namevarlist; do 2107 case $1 in 2108 $_v) return 0 ;; 2109 esac 2110 done 2111 2112 return 1 2113} 2114 2115# _echoonce var msg mode 2116# mode=0: Echo $msg if ${$var} is empty. 2117# After doing echo, a string is set to ${$var}. 2118# 2119# mode=1: Echo $msg if ${$var} is a string with non-zero length. 2120# 2121_echoonce() 2122{ 2123 local _var _msg _mode 2124 eval _var=\$$1 2125 _msg=$2 2126 _mode=$3 2127 2128 case $_mode in 2129 1) [ -n "$_var" ] && echo "$_msg" ;; 2130 *) [ -z "$_var" ] && echo -n "$_msg" && eval "$1=finished" ;; 2131 esac 2132} 2133 2134# If the loader env variable rc.debug is set, turn on debugging. rc.conf will 2135# still override this, but /etc/defaults/rc.conf can't unconditionally set this 2136# since it would undo what we've done here. 2137if kenv -q rc.debug > /dev/null ; then 2138 rc_debug=YES 2139fi 2140