1# $NetBSD: rc.subr,v 1.67 2006/10/07 11:25:15 elad Exp $ 2# 3# Copyright (c) 1997-2004 The NetBSD Foundation, Inc. 4# All rights reserved. 5# 6# This code is derived from software contributed to The NetBSD Foundation 7# by Luke Mewburn. 8# 9# Redistribution and use in source and binary forms, with or without 10# modification, are permitted provided that the following conditions 11# are met: 12# 1. Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# 2. Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in the 16# documentation and/or other materials provided with the distribution. 17# 18# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 19# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 20# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 21# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 22# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 28# POSSIBILITY OF SUCH DAMAGE. 29# 30# rc.subr 31# functions used by various rc scripts 32# 33 34: ${RC_PID:=$$}; export RC_PID 35 36# 37# Operating System dependent/independent variables 38# 39 40if [ -n "${_rc_subr_loaded}" ]; then 41 return 42fi 43 44_rc_subr_loaded="YES" 45 46SYSCTL="/sbin/sysctl" 47SYSCTL_N="${SYSCTL} -n" 48SYSCTL_W="${SYSCTL}" 49PROTECT="/usr/bin/protect" 50ID="/usr/bin/id" 51IDCMD="if [ -x $ID ]; then $ID -un; fi" 52PS="/bin/ps -ww" 53JID=0 54CPUSET="/bin/cpuset" 55 56# rc_service provides the path to the service script that we are executing. 57# This is not being set here in an execution context, necessarily, so it's 58# really just a reasonable guess, and it will get overwritten later if 59# we are executing from some other means than direct execution by service(8) 60# or manual invocation of the service script. The prime example of this is 61# during system startup, all rc scripts will be invoked via /etc/rc, so 62# run_rc_script will overwrite rc_service with the file being sourced. 63rc_service="$0" 64 65# 66# functions 67# --------- 68 69# list_vars pattern 70# List variables matching glob pattern. 71# 72list_vars() 73{ 74 # Localize 'set' option below. 75 local - 76 local IFS=$'\n' line varname 77 78 # Disable path expansion in unquoted 'for' parameters below. 79 set -o noglob 80 81 for line in $(set); do 82 varname="${line%%=*}" 83 84 case "$varname" in 85 "$line"|*[!a-zA-Z0-9_]*) 86 continue 87 ;; 88 $1) 89 echo $varname 90 ;; 91 esac 92 done 93} 94 95# set_rcvar [var] [defval] [desc] 96# 97# Echo or define a rc.conf(5) variable name. Global variable 98# $rcvars is used. 99# 100# If no argument is specified, echo "${name}_enable". 101# 102# If only a var is specified, echo "${var}_enable". 103# 104# If var and defval are specified, the ${var} is defined as 105# rc.conf(5) variable and the default value is ${defvar}. An 106# optional argument $desc can also be specified to add a 107# description for that. 108# 109set_rcvar() 110{ 111 local _var 112 113 case $# in 114 0) echo ${name}_enable ;; 115 1) echo ${1}_enable ;; 116 *) 117 debug "set_rcvar: \$$1=$2 is added" \ 118 " as a rc.conf(5) variable." 119 _var=$1 120 rcvars="${rcvars# } $_var" 121 eval ${_var}_defval=\"$2\" 122 shift 2 123 eval ${_var}_desc=\"$*\" 124 ;; 125 esac 126} 127 128# set_rcvar_obsolete oldvar [newvar] [msg] 129# Define obsolete variable. 130# Global variable $rcvars_obsolete is used. 131# 132set_rcvar_obsolete() 133{ 134 local _var 135 _var=$1 136 debug "set_rcvar_obsolete: \$$1(old) -> \$$2(new) is defined" 137 138 rcvars_obsolete="${rcvars_obsolete# } $1" 139 eval ${1}_newvar=\"$2\" 140 shift 2 141 eval ${_var}_obsolete_msg=\"$*\" 142} 143 144# 145# force_depend script [rcvar] 146# Force a service to start. Intended for use by services 147# to resolve dependency issues. 148# $1 - filename of script, in /etc/rc.d, to run 149# $2 - name of the script's rcvar (minus the _enable) 150# 151force_depend() 152{ 153 local _depend _dep_rcvar 154 155 _depend="$1" 156 _dep_rcvar="${2:-$1}_enable" 157 158 [ -n "$rc_fast" ] && ! checkyesno always_force_depends && 159 checkyesno $_dep_rcvar && return 0 160 161 /etc/rc.d/${_depend} forcestatus >/dev/null 2>&1 && return 0 162 163 info "${name} depends on ${_depend}, which will be forced to start." 164 if ! /etc/rc.d/${_depend} forcestart; then 165 warn "Unable to force ${_depend}. It may already be running." 166 return 1 167 fi 168} 169 170# 171# checkyesno var 172# Test $1 variable, and warn if not set to YES or NO. 173# Return 0 if it's "yes" (et al), nonzero otherwise. 174# 175checkyesno() 176{ 177 eval _value=\$${1} 178 debug "checkyesno: $1 is set to $_value." 179 case $_value in 180 181 # "yes", "true", "on", or "1" 182 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 183 return 0 184 ;; 185 186 # "no", "false", "off", or "0" 187 [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) 188 return 1 189 ;; 190 *) 191 warn "\$${1} is not set properly - see rc.conf(5)." 192 return 1 193 ;; 194 esac 195} 196 197# 198# reverse_list list 199# print the list in reverse order 200# 201reverse_list() 202{ 203 _revlist= 204 for _revfile; do 205 _revlist="$_revfile $_revlist" 206 done 207 echo $_revlist 208} 209 210# stop_boot always 211# If booting directly to multiuser or $always is enabled, 212# send SIGTERM to the parent (/etc/rc) to abort the boot. 213# Otherwise just exit. 214# 215stop_boot() 216{ 217 local always 218 219 case $1 in 220 # "yes", "true", "on", or "1" 221 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 222 always=true 223 ;; 224 *) 225 always=false 226 ;; 227 esac 228 if [ "$autoboot" = yes -o "$always" = true ]; then 229 echo "ERROR: ABORTING BOOT (sending SIGTERM to parent)!" 230 kill -TERM ${RC_PID} 231 fi 232 exit 1 233} 234 235# 236# mount_critical_filesystems type 237# Go through the list of critical filesystems as provided in 238# the rc.conf(5) variable $critical_filesystems_${type}, checking 239# each one to see if it is mounted, and if it is not, mounting it. 240# 241mount_critical_filesystems() 242{ 243 eval _fslist=\$critical_filesystems_${1} 244 for _fs in $_fslist; do 245 mount | ( 246 _ismounted=false 247 while read what _on on _type type; do 248 if [ $on = $_fs ]; then 249 _ismounted=true 250 fi 251 done 252 if $_ismounted; then 253 : 254 else 255 mount $_fs >/dev/null 2>&1 256 fi 257 ) 258 done 259} 260 261# 262# check_pidfile pidfile procname [interpreter] 263# Parses the first line of pidfile for a PID, and ensures 264# that the process is running and matches procname. 265# Prints the matching PID upon success, nothing otherwise. 266# interpreter is optional; see _find_processes() for details. 267# 268check_pidfile() 269{ 270 _pidfile=$1 271 _procname=$2 272 _interpreter=$3 273 if [ -z "$_pidfile" -o -z "$_procname" ]; then 274 err 3 'USAGE: check_pidfile pidfile procname [interpreter]' 275 fi 276 if [ ! -f $_pidfile ]; then 277 debug "pid file ($_pidfile): not readable." 278 return 279 fi 280 read _pid _junk < $_pidfile 281 if [ -z "$_pid" ]; then 282 debug "pid file ($_pidfile): no pid in file." 283 return 284 fi 285 _find_processes $_procname ${_interpreter:-.} '-p '"$_pid" 286} 287 288# 289# check_process procname [interpreter] 290# Ensures that a process (or processes) named procname is running. 291# Prints a list of matching PIDs. 292# interpreter is optional; see _find_processes() for details. 293# 294check_process() 295{ 296 _procname=$1 297 _interpreter=$2 298 if [ -z "$_procname" ]; then 299 err 3 'USAGE: check_process procname [interpreter]' 300 fi 301 _find_processes $_procname ${_interpreter:-.} '-ax' 302} 303 304# 305# _find_processes procname interpreter psargs 306# Search for procname in the output of ps generated by psargs. 307# Prints the PIDs of any matching processes, space separated. 308# 309# If interpreter == ".", check the following variations of procname 310# against the first word of each command: 311# procname 312# `basename procname` 313# `basename procname` + ":" 314# "(" + `basename procname` + ")" 315# "[" + `basename procname` + "]" 316# 317# If interpreter != ".", read the first line of procname, remove the 318# leading #!, normalise whitespace, append procname, and attempt to 319# match that against each command, either as is, or with extra words 320# at the end. As an alternative, to deal with interpreted daemons 321# using perl, the basename of the interpreter plus a colon is also 322# tried as the prefix to procname. 323# 324_find_processes() 325{ 326 if [ $# -ne 3 ]; then 327 err 3 'USAGE: _find_processes procname interpreter psargs' 328 fi 329 _procname=$1 330 _interpreter=$2 331 _psargs=$3 332 333 _pref= 334 if [ $_interpreter != "." ]; then # an interpreted script 335 _script="${_chroot}${_chroot:+/}$_procname" 336 if [ -r "$_script" ]; then 337 read _interp < $_script # read interpreter name 338 case "$_interp" in 339 \#!*) 340 _interp=${_interp#\#!} # strip #! 341 set -- $_interp 342 case $1 in 343 */bin/env) 344 shift # drop env to get real name 345 ;; 346 esac 347 if [ $_interpreter != $1 ]; then 348 warn "\$command_interpreter $_interpreter != $1" 349 fi 350 ;; 351 *) 352 warn "no shebang line in $_script" 353 set -- $_interpreter 354 ;; 355 esac 356 else 357 warn "cannot read shebang line from $_script" 358 set -- $_interpreter 359 fi 360 _interp="$* $_procname" # cleanup spaces, add _procname 361 _interpbn=${1##*/} 362 _fp_args='_argv' 363 _fp_match='case "$_argv" in 364 ${_interp}|"${_interp} "*|"[${_interpbn}]"|"${_interpbn}: ${_procname}"*)' 365 else # a normal daemon 366 _procnamebn=${_procname##*/} 367 _fp_args='_arg0 _argv' 368 _fp_match='case "$_arg0" in 369 $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})"|"[${_procnamebn}]")' 370 fi 371 372 _proccheck="\ 373 $PS 2>/dev/null -o pid= -o jid= -o command= $_psargs"' | 374 while read _npid _jid '"$_fp_args"'; do 375 '"$_fp_match"' 376 if [ "$JID" -eq "$_jid" ]; 377 then echo -n "$_pref$_npid"; 378 _pref=" "; 379 fi 380 ;; 381 esac 382 done' 383 384# debug "in _find_processes: proccheck is ($_proccheck)." 385 eval $_proccheck 386} 387 388# sort_lite [-b] [-n] [-k POS] [-t SEP] 389# A lite version of sort(1) (supporting a few options) that can be used 390# before the real sort(1) is available (e.g., in scripts that run prior 391# to mountcritremote). Requires only shell built-in functionality. 392# 393sort_lite() 394{ 395 local funcname=sort_lite 396 local sort_sep="$IFS" sort_ignore_leading_space= 397 local sort_field=0 sort_strict_fields= sort_numeric= 398 local nitems=0 skip_leading=0 trim= 399 400 local OPTIND flag 401 while getopts bnk:t: flag; do 402 case "$flag" in 403 b) sort_ignore_leading_space=1 ;; 404 n) sort_numeric=1 sort_ignore_leading_space=1 ;; 405 k) sort_field="${OPTARG%%,*}" ;; # only up to first comma 406 # NB: Unlike sort(1) only one POS allowed 407 t) sort_sep="$OPTARG" 408 if [ ${#sort_sep} -gt 1 ]; then 409 echo "$funcname: multi-character tab \`$sort_sep'" >&2 410 return 1 411 fi 412 sort_strict_fields=1 413 ;; 414 \?) return 1 ;; 415 esac 416 done 417 shift $(( $OPTIND - 1 )) 418 419 # Create transformation pattern to trim leading text if desired 420 case "$sort_field" in 421 ""|[!0-9]*|*[!0-9.]*) 422 echo "$funcname: invalid sort field \`$sort_field'" >&2 423 return 1 424 ;; 425 *.*) 426 skip_leading=${sort_field#*.} sort_field=${sort_field%%.*} 427 while [ ${skip_leading:-0} -gt 1 ] 2> /dev/null; do 428 trim="$trim?" skip_leading=$(( $skip_leading - 1 )) 429 done 430 esac 431 432 # Copy input to series of local numbered variables 433 # NB: IFS of NULL preserves leading whitespace 434 local LINE 435 while IFS= read -r LINE || [ "$LINE" ]; do 436 nitems=$(( $nitems + 1 )) 437 local src_$nitems="$LINE" 438 done 439 440 # 441 # Sort numbered locals using insertion sort 442 # 443 local curitem curitem_orig curitem_mod curitem_haskey 444 local dest dest_orig dest_mod dest_haskey 445 local d gt n 446 local i=1 447 while [ $i -le $nitems ]; do 448 curitem_haskey=1 # Assume sort field (-k POS) exists 449 eval curitem=\"\$src_$i\" 450 curitem_mod="$curitem" # for modified comparison 451 curitem_orig="$curitem" # for original comparison 452 453 # Trim leading whitespace if desired 454 if [ "$sort_ignore_leading_space" ]; then 455 while case "$curitem_orig" in 456 [$IFS]*) : ;; *) false; esac 457 do 458 curitem_orig="${curitem_orig#?}" 459 done 460 curitem_mod="$curitem_orig" 461 fi 462 463 # Shift modified comparison value if sort field (-k POS) is > 1 464 n=$sort_field 465 while [ $n -gt 1 ]; do 466 case "$curitem_mod" in 467 *[$sort_sep]*) 468 # Cut text up-to (and incl.) first separator 469 curitem_mod="${curitem_mod#*[$sort_sep]}" 470 471 # Skip NULLs unless strict field splitting 472 [ "$sort_strict_fields" ] || 473 [ "${curitem_mod%%[$sort_sep]*}" ] || 474 [ $n -eq 2 ] || 475 continue 476 ;; 477 *) 478 # Asked for a field that doesn't exist 479 curitem_haskey= break 480 esac 481 n=$(( $n - 1 )) 482 done 483 484 # Trim trailing words if sort field >= 1 485 [ $sort_field -ge 1 -a "$sort_numeric" ] && 486 curitem_mod="${curitem_mod%%[$sort_sep]*}" 487 488 # Apply optional trim (-k POS.TRIM) to cut leading characters 489 curitem_mod="${curitem_mod#$trim}" 490 491 # Determine the type of modified comparison to use initially 492 # NB: Prefer numerical if requested but fallback to standard 493 case "$curitem_mod" in 494 ""|[!0-9]*) # NULL or begins with non-number 495 gt=">" 496 [ "$sort_numeric" ] && curitem_mod=0 497 ;; 498 *) 499 if [ "$sort_numeric" ]; then 500 gt="-gt" 501 curitem_mod="${curitem_mod%%[!0-9]*}" 502 # NB: trailing non-digits removed 503 # otherwise numeric comparison fails 504 else 505 gt=">" 506 fi 507 esac 508 509 # If first time through, short-circuit below position-search 510 if [ $i -le 1 ]; then 511 d=0 512 else 513 d=1 514 fi 515 516 # 517 # Find appropriate element position 518 # 519 while [ $d -gt 0 ] 520 do 521 dest_haskey=$curitem_haskey 522 eval dest=\"\$dest_$d\" 523 dest_mod="$dest" # for modified comparison 524 dest_orig="$dest" # for original comparison 525 526 # Trim leading whitespace if desired 527 if [ "$sort_ignore_leading_space" ]; then 528 while case "$dest_orig" in 529 [$IFS]*) : ;; *) false; esac 530 do 531 dest_orig="${dest_orig#?}" 532 done 533 dest_mod="$dest_orig" 534 fi 535 536 # Shift modified value if sort field (-k POS) is > 1 537 n=$sort_field 538 while [ $n -gt 1 ]; do 539 case "$dest_mod" in 540 *[$sort_sep]*) 541 # Cut text up-to (and incl.) 1st sep 542 dest_mod="${dest_mod#*[$sort_sep]}" 543 544 # Skip NULLs unless strict fields 545 [ "$sort_strict_fields" ] || 546 [ "${dest_mod%%[$sort_sep]*}" ] || 547 [ $n -eq 2 ] || 548 continue 549 ;; 550 *) 551 # Asked for a field that doesn't exist 552 dest_haskey= break 553 esac 554 n=$(( $n - 1 )) 555 done 556 557 # Trim trailing words if sort field >= 1 558 [ $sort_field -ge 1 -a "$sort_numeric" ] && 559 dest_mod="${dest_mod%%[$sort_sep]*}" 560 561 # Apply optional trim (-k POS.TRIM), cut leading chars 562 dest_mod="${dest_mod#$trim}" 563 564 # Determine type of modified comparison to use 565 # NB: Prefer numerical if requested, fallback to std 566 case "$dest_mod" in 567 ""|[!0-9]*) # NULL or begins with non-number 568 gt=">" 569 [ "$sort_numeric" ] && dest_mod=0 570 ;; 571 *) 572 if [ "$sort_numeric" ]; then 573 gt="-gt" 574 dest_mod="${dest_mod%%[!0-9]*}" 575 # NB: kill trailing non-digits 576 # for numeric comparison safety 577 else 578 gt=">" 579 fi 580 esac 581 582 # Break if we've found the proper element position 583 if [ "$curitem_haskey" -a "$dest_haskey" ]; then 584 if [ "$dest_mod" = "$curitem_mod" ]; then 585 [ "$dest_orig" ">" "$curitem_orig" ] && 586 break 587 elif [ "$dest_mod" $gt "$curitem_mod" ] \ 588 2> /dev/null 589 then 590 break 591 fi 592 else 593 [ "$dest_orig" ">" "$curitem_orig" ] && break 594 fi 595 596 # Break if we've hit the end 597 [ $d -ge $i ] && break 598 599 d=$(( $d + 1 )) 600 done 601 602 # Shift remaining positions forward, making room for new item 603 n=$i 604 while [ $n -ge $d ]; do 605 # Shift destination item forward one placement 606 eval dest_$(( $n + 1 ))=\"\$dest_$n\" 607 n=$(( $n - 1 )) 608 done 609 610 # Place the element 611 if [ $i -eq 1 ]; then 612 local dest_1="$curitem" 613 else 614 local dest_$d="$curitem" 615 fi 616 617 i=$(( $i + 1 )) 618 done 619 620 # Print sorted results 621 d=1 622 while [ $d -le $nitems ]; do 623 eval echo \"\$dest_$d\" 624 d=$(( $d + 1 )) 625 done 626} 627 628# 629# wait_for_pids pid [pid ...] 630# spins until none of the pids exist 631# 632wait_for_pids() 633{ 634 local _list _prefix _nlist _j 635 636 _list="$@" 637 if [ -z "$_list" ]; then 638 return 639 fi 640 _prefix= 641 while true; do 642 _nlist=""; 643 for _j in $_list; do 644 if kill -0 $_j 2>/dev/null; then 645 _nlist="${_nlist}${_nlist:+ }$_j" 646 [ -n "$_prefix" ] && sleep 1 647 fi 648 done 649 if [ -z "$_nlist" ]; then 650 break 651 fi 652 _list=$_nlist 653 echo -n ${_prefix:-"Waiting for PIDS: "}$_list 654 _prefix=", " 655 pwait $_list 2>/dev/null 656 done 657 if [ -n "$_prefix" ]; then 658 echo "." 659 fi 660} 661 662# 663# get_pidfile_from_conf string file 664# 665# Takes a string to search for in the specified file. 666# Ignores lines with traditional comment characters. 667# 668# Example: 669# 670# if get_pidfile_from_conf string file; then 671# pidfile="$_pidfile_from_conf" 672# else 673# pidfile='appropriate default' 674# fi 675# 676get_pidfile_from_conf() 677{ 678 if [ -z "$1" -o -z "$2" ]; then 679 err 3 "USAGE: get_pidfile_from_conf string file ($name)" 680 fi 681 682 local string file line 683 684 string="$1" ; file="$2" 685 686 if [ ! -s "$file" ]; then 687 err 3 "get_pidfile_from_conf: $file does not exist ($name)" 688 fi 689 690 while read line; do 691 case "$line" in 692 *[#\;]*${string}*) continue ;; 693 *${string}*) break ;; 694 esac 695 done < $file 696 697 if [ -n "$line" ]; then 698 line=${line#*/} 699 _pidfile_from_conf="/${line%%[\"\;]*}" 700 else 701 return 1 702 fi 703} 704 705# 706# check_startmsgs 707# If rc_quiet is set (usually as a result of using faststart at 708# boot time) check if rc_startmsgs is enabled. 709# 710check_startmsgs() 711{ 712 if [ -n "$rc_quiet" ]; then 713 checkyesno rc_startmsgs 714 else 715 return 0 716 fi 717} 718 719# 720# startmsg 721# Preferred method to use when displaying start messages in lieu of echo. 722# 723startmsg() 724{ 725 check_startmsgs && echo "$@" 726} 727 728# 729# run_rc_command argument 730# Search for argument in the list of supported commands, which is: 731# "start stop restart rcvar status poll ${extra_commands}" 732# If there's a match, run ${argument}_cmd or the default method 733# (see below). 734# 735# If argument has a given prefix, then change the operation as follows: 736# Prefix Operation 737# ------ --------- 738# fast Skip the pid check, and set rc_fast=yes, rc_quiet=yes 739# force Set ${rcvar} to YES, and set rc_force=yes 740# one Set ${rcvar} to YES 741# quiet Don't output some diagnostics, and set rc_quiet=yes 742# 743# The following globals are used: 744# 745# Name Needed Purpose 746# ---- ------ ------- 747# name y Name of script. 748# 749# command n Full path to command. 750# Not needed if ${rc_arg}_cmd is set for 751# each keyword. 752# 753# command_args n Optional args/shell directives for command. 754# 755# command_interpreter n If not empty, command is interpreted, so 756# call check_{pidfile,process}() appropriately. 757# 758# desc n Description of script. 759# 760# extra_commands n List of extra commands supported. 761# 762# pidfile n If set, use check_pidfile $pidfile $command, 763# otherwise use check_process $command. 764# In either case, only check if $command is set. 765# 766# procname n Process name to check for instead of $command. 767# 768# rcvar n This is checked with checkyesno to determine 769# if the action should be run. 770# 771# ${name}_program n Full path to command. 772# Meant to be used in /etc/rc.conf to override 773# ${command}. 774# 775# ${name}_chroot n Directory to chroot to before running ${command} 776# Requires /usr to be mounted. 777# 778# ${name}_chdir n Directory to cd to before running ${command} 779# (if not using ${name}_chroot). 780# 781# ${name}_cpuset n A list of CPUs to run ${command} on. 782# Requires /usr to be mounted. 783# 784# ${name}_flags n Arguments to call ${command} with. 785# NOTE: $flags from the parent environment 786# can be used to override this. 787# 788# ${name}_env n Environment variables to run ${command} with. 789# 790# ${name}_env_file n File to source variables to run ${command} with. 791# 792# ${name}_fib n Routing table number to run ${command} with. 793# 794# ${name}_nice n Nice level to run ${command} at. 795# 796# ${name}_oomprotect n Don't kill ${command} when swap space is exhausted. 797# 798# ${name}_umask n The file creation mask to run ${command} with. 799# 800# ${name}_user n User to run ${command} as, using su(1) if not 801# using ${name}_chroot. 802# Requires /usr to be mounted. 803# 804# ${name}_group n Group to run chrooted ${command} as. 805# Requires /usr to be mounted. 806# 807# ${name}_groups n Comma separated list of supplementary groups 808# to run the chrooted ${command} with. 809# Requires /usr to be mounted. 810# 811# ${name}_prepend n Command added before ${command}. 812# 813# ${name}_setup n Command executed before ${command}. 814# 815# ${name}_login_class n Login class to use, else "daemon". 816# 817# ${name}_limits n limits(1) to apply to ${command}. 818# 819# ${rc_arg}_cmd n If set, use this as the method when invoked; 820# Otherwise, use default command (see below) 821# 822# ${rc_arg}_precmd n If set, run just before performing the 823# ${rc_arg}_cmd method in the default 824# operation (i.e, after checking for required 825# bits and process (non)existence). 826# If this completes with a non-zero exit code, 827# don't run ${rc_arg}_cmd. 828# 829# ${rc_arg}_postcmd n If set, run just after performing the 830# ${rc_arg}_cmd method, if that method 831# returned a zero exit code. 832# 833# required_dirs n If set, check for the existence of the given 834# directories before running a (re)start command. 835# 836# required_files n If set, check for the readability of the given 837# files before running a (re)start command. 838# 839# required_modules n If set, ensure the given kernel modules are 840# loaded before running a (re)start command. 841# The check and possible loads are actually 842# done after start_precmd so that the modules 843# aren't loaded in vain, should the precmd 844# return a non-zero status to indicate a error. 845# If a word in the list looks like "foo:bar", 846# "foo" is the KLD file name and "bar" is the 847# module name. If a word looks like "foo~bar", 848# "foo" is the KLD file name and "bar" is a 849# egrep(1) pattern matching the module name. 850# Otherwise the module name is assumed to be 851# the same as the KLD file name, which is most 852# common. See load_kld(). 853# 854# required_vars n If set, perform checkyesno on each of the 855# listed variables before running the default 856# (re)start command. 857# 858# Default behaviour for a given argument, if no override method is 859# provided: 860# 861# Argument Default behaviour 862# -------- ----------------- 863# start if !running && checkyesno ${rcvar} 864# ${command} 865# 866# stop if ${pidfile} 867# rc_pid=$(check_pidfile $pidfile $command) 868# else 869# rc_pid=$(check_process $command) 870# kill $sig_stop $rc_pid 871# wait_for_pids $rc_pid 872# ($sig_stop defaults to TERM.) 873# 874# reload Similar to stop, except use $sig_reload instead, 875# and don't wait_for_pids. 876# $sig_reload defaults to HUP. 877# Note that `reload' isn't provided by default, 878# it should be enabled via $extra_commands. 879# 880# restart Run `stop' then `start'. 881# 882# status Show if ${command} is running, etc. 883# 884# poll Wait for ${command} to exit. 885# 886# rcvar Display what rc.conf variable is used (if any). 887# 888# enabled Return true if the service is enabled. 889# 890# describe Show the service's description 891# 892# extracommands Show the service's extra commands 893# 894# Variables available to methods, and after run_rc_command() has 895# completed: 896# 897# Variable Purpose 898# -------- ------- 899# rc_arg Argument to command, after fast/force/one processing 900# performed 901# 902# rc_flags Flags to start the default command with. 903# Defaults to ${name}_flags, unless overridden 904# by $flags from the environment. 905# This variable may be changed by the precmd method. 906# 907# rc_service Path to the service being executed, in case the service 908# needs to re-invoke itself. 909# 910# rc_pid PID of command (if appropriate) 911# 912# rc_fast Not empty if "fast" was provided (q.v.) 913# 914# rc_force Not empty if "force" was provided (q.v.) 915# 916# rc_quiet Not empty if "quiet" was provided 917# 918# 919run_rc_command() 920{ 921 _return=0 922 rc_arg=$1 923 if [ -z "$name" ]; then 924 err 3 'run_rc_command: $name is not set.' 925 fi 926 927 # Don't repeat the first argument when passing additional command- 928 # line arguments to the command subroutines. 929 # 930 shift 1 931 rc_extra_args="$*" 932 933 _rc_prefix= 934 case "$rc_arg" in 935 fast*) # "fast" prefix; don't check pid 936 rc_arg=${rc_arg#fast} 937 rc_fast=yes 938 rc_quiet=yes 939 ;; 940 force*) # "force" prefix; always run 941 rc_force=yes 942 _rc_prefix=force 943 rc_arg=${rc_arg#${_rc_prefix}} 944 if [ -n "${rcvar}" ]; then 945 eval ${rcvar}=YES 946 fi 947 ;; 948 one*) # "one" prefix; set ${rcvar}=yes 949 _rc_prefix=one 950 rc_arg=${rc_arg#${_rc_prefix}} 951 if [ -n "${rcvar}" ]; then 952 eval ${rcvar}=YES 953 fi 954 ;; 955 quiet*) # "quiet" prefix; omit some messages 956 _rc_prefix=quiet 957 rc_arg=${rc_arg#${_rc_prefix}} 958 rc_quiet=yes 959 ;; 960 esac 961 962 eval _override_command=\$${name}_program 963 command=${_override_command:-$command} 964 965 _keywords="start stop restart rcvar enable disable delete enabled describe extracommands $extra_commands" 966 rc_pid= 967 _pidcmd= 968 _procname=${procname:-${command}} 969 970 eval _cpuset=\$${name}_cpuset 971 972 # Loose validation of the configured cpuset; just make sure it starts 973 # with a number. There have also been cases in the past where a hyphen 974 # in a service name has caused eval errors, which trickle down into 975 # various variables; don't let a situation like that break a bunch of 976 # services just because of cpuset(1). 977 case "$_cpuset" in 978 [0-9]*) ;; 979 *) _cpuset="" ;; 980 esac 981 982 _cpusetcmd= 983 if [ -n "$_cpuset" ]; then 984 _cpusetcmd="$CPUSET -l $_cpuset" 985 fi 986 987 # setup pid check command 988 if [ -n "$_procname" ]; then 989 if [ -n "$pidfile" ]; then 990 _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')' 991 else 992 _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')' 993 fi 994 _keywords="${_keywords} status poll" 995 else 996 if [ ! -z "${status_cmd}" ] 997 then 998 _keywords="${_keywords} status" 999 fi 1000 fi 1001 1002 if [ -z "$rc_arg" ]; then 1003 rc_usage $_keywords 1004 fi 1005 1006 if [ "$rc_arg" = "enabled" ] ; then 1007 checkyesno ${rcvar} 1008 return $? 1009 fi 1010 1011 if [ -n "$flags" ]; then # allow override from environment 1012 rc_flags=$flags 1013 else 1014 eval rc_flags=\$${name}_flags 1015 fi 1016 eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \ 1017 _nice=\$${name}_nice _user=\$${name}_user \ 1018 _group=\$${name}_group _groups=\$${name}_groups \ 1019 _fib=\$${name}_fib _env=\$${name}_env \ 1020 _prepend=\$${name}_prepend _login_class=\${${name}_login_class:-daemon} \ 1021 _limits=\$${name}_limits _oomprotect=\$${name}_oomprotect \ 1022 _setup=\$${name}_setup _env_file=\$${name}_env_file \ 1023 _umask=\$${name}_umask 1024 1025 if [ -n "$_env_file" ] && [ -r "${_env_file}" ]; then # load env from file 1026 set -a 1027 . $_env_file 1028 set +a 1029 fi 1030 1031 if [ -n "$_user" ]; then # unset $_user if running as that user 1032 if [ "$_user" = "$(eval $IDCMD)" ]; then 1033 unset _user 1034 fi 1035 fi 1036 1037 [ -z "$autoboot" ] && eval $_pidcmd # determine the pid if necessary 1038 1039 for _elem in $_keywords; do 1040 if [ "$_elem" != "$rc_arg" ]; then 1041 continue 1042 fi 1043 # if ${rcvar} is set, $1 is not "rcvar", "describe", 1044 # "enable", "delete" or "status", and ${rc_pid} is 1045 # not set, run: 1046 # checkyesno ${rcvar} 1047 # and return if that failed 1048 # 1049 if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" -a "$rc_arg" != "stop" \ 1050 -a "$rc_arg" != "delete" -a "$rc_arg" != "enable" \ 1051 -a "$rc_arg" != "describe" -a "$rc_arg" != "status" ] || 1052 [ -n "${rcvar}" -a "$rc_arg" = "stop" -a -z "${rc_pid}" ]; then 1053 if ! checkyesno ${rcvar}; then 1054 if [ -n "${rc_quiet}" ]; then 1055 return 0 1056 fi 1057 echo -n "Cannot '${rc_arg}' $name. Set ${rcvar} to " 1058 echo -n "YES in /etc/rc.conf or use 'one${rc_arg}' " 1059 echo "instead of '${rc_arg}'." 1060 return 0 1061 fi 1062 fi 1063 1064 if [ $rc_arg = "start" -a -z "$rc_fast" -a -n "$rc_pid" ]; then 1065 if [ -z "$rc_quiet" ]; then 1066 echo 1>&2 "${name} already running? " \ 1067 "(pid=$rc_pid)." 1068 fi 1069 return 1 1070 fi 1071 1072 # if there's a custom ${XXX_cmd}, 1073 # run that instead of the default 1074 # 1075 eval _cmd=\$${rc_arg}_cmd \ 1076 _precmd=\$${rc_arg}_precmd \ 1077 _postcmd=\$${rc_arg}_postcmd 1078 1079 if [ -n "$_cmd" ]; then 1080 if [ -n "$_env" ]; then 1081 eval "export -- $_env" 1082 fi 1083 _run_rc_precmd || return 1 1084 _run_rc_doit "$_cpusetcmd $_cmd $rc_extra_args" || return 1 1085 _run_rc_postcmd 1086 return $_return 1087 fi 1088 1089 case "$rc_arg" in # default operations... 1090 1091 describe) 1092 if [ -n "$desc" ]; then 1093 echo "$desc" 1094 fi 1095 ;; 1096 1097 extracommands) 1098 echo "$extra_commands" 1099 ;; 1100 1101 enable) 1102 _out=$(/usr/sbin/sysrc -vs "$name" "$rcvar=YES") && 1103 echo "$name enabled in ${_out%%:*}" 1104 ;; 1105 1106 disable) 1107 _out=$(/usr/sbin/sysrc -vs "$name" "$rcvar=NO") && 1108 echo "$name disabled in ${_out%%:*}" 1109 ;; 1110 1111 delete) 1112 _files= 1113 for _file in $(sysrc -lEs "$name"); do 1114 _out=$(sysrc -Fif $_file "$rcvar") && _files="$_files $_file" 1115 done 1116 /usr/sbin/sysrc -x "$rcvar" && echo "$rcvar deleted in ${_files# }" 1117 # delete file in rc.conf.d if desired and empty. 1118 checkyesno service_delete_empty || _files= 1119 for _file in $_files; do 1120 [ "$_file" = "${_file#*/rc.conf.d/}" ] && continue 1121 [ $(/usr/bin/stat -f%z $_file) -gt 0 ] && continue 1122 /bin/rm "$_file" && echo "Empty file $_file removed" 1123 done 1124 ;; 1125 1126 status) 1127 _run_rc_precmd || return 1 1128 if [ -n "$rc_pid" ]; then 1129 echo "${name} is running as pid $rc_pid." 1130 else 1131 echo "${name} is not running." 1132 return 1 1133 fi 1134 _run_rc_postcmd 1135 ;; 1136 1137 start) 1138 if [ ! -x "${_chroot}${_chroot:+/}${command}" ]; then 1139 warn "run_rc_command: cannot run $command" 1140 return 1 1141 fi 1142 1143 if ! _run_rc_precmd; then 1144 warn "failed precmd routine for ${name}" 1145 return 1 1146 fi 1147 1148 # setup the full command to run 1149 # 1150 startmsg "Starting ${name}." 1151 if [ -n "$_chroot" ]; then 1152 _cd= 1153 _doit="\ 1154${_nice:+nice -n $_nice }\ 1155$_cpusetcmd \ 1156${_fib:+setfib -F $_fib }\ 1157${_env:+env $_env }\ 1158chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\ 1159$_chroot $command $rc_flags $command_args" 1160 else 1161 _cd="${_chdir:+cd $_chdir && }" 1162 _doit="\ 1163${_fib:+setfib -F $_fib }\ 1164${_env:+env $_env }\ 1165$_cpusetcmd $command $rc_flags $command_args" 1166 if [ -n "$_user" ]; then 1167 _doit="su -m $_user -c 'sh -c \"$_doit\"'" 1168 fi 1169 if [ -n "$_nice" ]; then 1170 if [ -z "$_user" ]; then 1171 _doit="sh -c \"$_doit\"" 1172 fi 1173 _doit="nice -n $_nice $_doit" 1174 fi 1175 if [ -n "$_prepend" ]; then 1176 _doit="$_prepend $_doit" 1177 fi 1178 fi 1179 1180 if [ -n "$_setup" ]; then 1181 if ! _run_rc_doit "$_setup"; then 1182 warn "failed to setup ${name}" 1183 fi 1184 fi 1185 1186 # Prepend default limits 1187 _doit="$_cd limits -C $_login_class $_limits $_doit" 1188 1189 # run the full command 1190 # 1191 if ! _run_rc_doit "$_doit"; then 1192 warn "failed to start ${name}" 1193 return 1 1194 fi 1195 1196 # finally, run postcmd 1197 # 1198 _run_rc_postcmd 1199 ;; 1200 1201 stop) 1202 if [ -z "$rc_pid" ]; then 1203 [ -n "$rc_fast" ] && return 0 1204 _run_rc_notrunning 1205 return 1 1206 fi 1207 1208 _run_rc_precmd || return 1 1209 1210 # send the signal to stop 1211 # 1212 echo "Stopping ${name}." 1213 _doit=$(_run_rc_killcmd "${sig_stop:-TERM}") 1214 _run_rc_doit "$_doit" || return 1 1215 1216 # wait for the command to exit, 1217 # and run postcmd. 1218 wait_for_pids $rc_pid 1219 1220 _run_rc_postcmd 1221 ;; 1222 1223 reload) 1224 if [ -z "$rc_pid" ]; then 1225 _run_rc_notrunning 1226 return 1 1227 fi 1228 1229 _run_rc_precmd || return 1 1230 1231 _doit=$(_run_rc_killcmd "${sig_reload:-HUP}") 1232 _run_rc_doit "$_doit" || return 1 1233 1234 _run_rc_postcmd 1235 ;; 1236 1237 restart) 1238 # prevent restart being called more 1239 # than once by any given script 1240 # 1241 if ${_rc_restart_done:-false}; then 1242 return 0 1243 fi 1244 _rc_restart_done=true 1245 1246 _run_rc_precmd || return 1 1247 1248 # run those in a subshell to keep global variables 1249 ( run_rc_command ${_rc_prefix}stop $rc_extra_args ) 1250 ( run_rc_command ${_rc_prefix}start $rc_extra_args ) 1251 _return=$? 1252 [ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1 1253 1254 _run_rc_postcmd 1255 ;; 1256 1257 poll) 1258 _run_rc_precmd || return 1 1259 if [ -n "$rc_pid" ]; then 1260 wait_for_pids $rc_pid 1261 fi 1262 _run_rc_postcmd 1263 ;; 1264 1265 rcvar) 1266 echo -n "# $name" 1267 if [ -n "$desc" ]; then 1268 echo " : $desc" 1269 else 1270 echo "" 1271 fi 1272 echo "#" 1273 # Get unique vars in $rcvar $rcvars 1274 for _v in $rcvar $rcvars; do 1275 case $v in 1276 $_v\ *|\ *$_v|*\ $_v\ *) ;; 1277 *) v="${v# } $_v" ;; 1278 esac 1279 done 1280 1281 # Display variables. 1282 for _v in $v; do 1283 if [ -z "$_v" ]; then 1284 continue 1285 fi 1286 1287 eval _desc=\$${_v}_desc 1288 eval _defval=\$${_v}_defval 1289 _h="-" 1290 1291 eval echo \"$_v=\\\"\$$_v\\\"\" 1292 # decode multiple lines of _desc 1293 while [ -n "$_desc" ]; do 1294 case $_desc in 1295 *^^*) 1296 echo "# $_h ${_desc%%^^*}" 1297 _desc=${_desc#*^^} 1298 _h=" " 1299 ;; 1300 *) 1301 echo "# $_h ${_desc}" 1302 break 1303 ;; 1304 esac 1305 done 1306 echo "# (default: \"$_defval\")" 1307 done 1308 echo "" 1309 ;; 1310 1311 *) 1312 rc_usage $_keywords 1313 ;; 1314 1315 esac 1316 1317 # Apply protect(1) to the PID if ${name}_oomprotect is set. 1318 case "$rc_arg" in 1319 start) 1320 # We cannot use protect(1) inside jails. 1321 if [ -n "$_oomprotect" ] && [ -f "${PROTECT}" ] && 1322 [ "$(sysctl -n security.jail.jailed)" -eq 0 ]; then 1323 [ -z "${rc_pid}" ] && eval $_pidcmd 1324 case $_oomprotect in 1325 [Aa][Ll][Ll]) 1326 ${PROTECT} -d -i -p ${rc_pid} 1327 ;; 1328 [Yy][Ee][Ss]) 1329 ${PROTECT} -p ${rc_pid} 1330 ;; 1331 esac 1332 fi 1333 ;; 1334 esac 1335 1336 return $_return 1337 done 1338 1339 echo 1>&2 "$0: unknown directive '$rc_arg'." 1340 rc_usage $_keywords 1341 # not reached 1342} 1343 1344# 1345# Helper functions for run_rc_command: common code. 1346# They use such global variables besides the exported rc_* ones: 1347# 1348# name R/W 1349# ------------------ 1350# _precmd R 1351# _postcmd R 1352# _return W 1353# 1354_run_rc_precmd() 1355{ 1356 check_required_before "$rc_arg" || return 1 1357 1358 if [ -n "$_precmd" ]; then 1359 debug "run_rc_command: ${rc_arg}_precmd: $_precmd $rc_extra_args" 1360 eval "$_precmd $rc_extra_args" 1361 _return=$? 1362 1363 # If precmd failed and force isn't set, request exit. 1364 if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then 1365 return 1 1366 fi 1367 fi 1368 1369 check_required_after "$rc_arg" || return 1 1370 1371 return 0 1372} 1373 1374_run_rc_postcmd() 1375{ 1376 if [ -n "$_postcmd" ]; then 1377 debug "run_rc_command: ${rc_arg}_postcmd: $_postcmd $rc_extra_args" 1378 eval "$_postcmd $rc_extra_args" 1379 _return=$? 1380 fi 1381 return 0 1382} 1383 1384_run_rc_doit() 1385{ 1386 local _m 1387 1388 debug "run_rc_command: doit: $*" 1389 _m=$(umask) 1390 ${_umask:+umask ${_umask}} 1391 eval "$@" 1392 _return=$? 1393 umask ${_m} 1394 1395 # If command failed and force isn't set, request exit. 1396 if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then 1397 return 1 1398 fi 1399 1400 return 0 1401} 1402 1403_run_rc_notrunning() 1404{ 1405 local _pidmsg 1406 1407 if [ -n "$pidfile" ]; then 1408 _pidmsg=" (check $pidfile)." 1409 else 1410 _pidmsg= 1411 fi 1412 echo 1>&2 "${name} not running?${_pidmsg}" 1413} 1414 1415_run_rc_killcmd() 1416{ 1417 local _cmd 1418 1419 _cmd="kill -$1 $rc_pid" 1420 if [ -n "$_user" ]; then 1421 _cmd="su -m ${_user} -c 'sh -c \"${_cmd}\"'" 1422 fi 1423 echo "$_cmd" 1424} 1425 1426# 1427# run_rc_script file arg 1428# Start the script `file' with `arg', and correctly handle the 1429# return value from the script. 1430# If `file' ends with `.sh' and lives in /etc/rc.d, ignore it as it's 1431# an old-style startup file. 1432# If `file' ends with `.sh' and does not live in /etc/rc.d, it's sourced 1433# into the current environment if $rc_fast_and_loose is set; otherwise 1434# it is run as a child process. 1435# If `file' appears to be a backup or scratch file, ignore it. 1436# Otherwise if it is executable run as a child process. 1437# 1438run_rc_script() 1439{ 1440 _file=$1 1441 _arg=$2 1442 if [ -z "$_file" -o -z "$_arg" ]; then 1443 err 3 'USAGE: run_rc_script file arg' 1444 fi 1445 1446 unset name command command_args command_interpreter \ 1447 extra_commands pidfile procname \ 1448 rcvar rcvars rcvars_obsolete required_dirs required_files \ 1449 required_vars 1450 eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd 1451 1452 rc_service="$_file" 1453 case "$_file" in 1454 /etc/rc.d/*.sh) # no longer allowed in the base 1455 warn "Ignoring old-style startup script $_file" 1456 ;; 1457 *[~#]|*.OLD|*.bak|*.orig|*,v) # scratch file; skip 1458 warn "Ignoring scratch file $_file" 1459 ;; 1460 *) # run in subshell 1461 if [ -x $_file ]; then 1462 if [ -n "$rc_boottrace" ]; then 1463 boottrace_fn "$_file" "$_arg" 1464 elif [ -n "$rc_fast_and_loose" ]; then 1465 set $_arg; . $_file 1466 else 1467 ( trap "echo Script $_file interrupted >&2 ; kill -QUIT $$" 3 1468 trap "echo Script $_file interrupted >&2 ; exit 1" 2 1469 trap "echo Script $_file running >&2" 29 1470 set $_arg; . $_file ) 1471 fi 1472 fi 1473 ;; 1474 esac 1475} 1476 1477boottrace_fn() 1478{ 1479 local _file _arg 1480 _file=$1 1481 _arg=$2 1482 1483 if [ -n "$rc_fast_and_loose" ]; then 1484 boottrace_sysctl "$_file start" 1485 set $_arg; . $_file 1486 boottrace_sysctl "$_file done" 1487 else 1488 $boottrace_cmd "$_file" "$_arg" 1489 fi 1490} 1491 1492boottrace_sysctl() 1493{ 1494 ${SYSCTL} kern.boottrace.boottrace="$1" 1495} 1496 1497# 1498# load_rc_config [service] 1499# Source in the configuration file(s) for a given service. 1500# If no service is specified, only the global configuration 1501# file(s) will be loaded. 1502# 1503load_rc_config() 1504{ 1505 local _name _rcvar_val _var _defval _v _msg _new _d 1506 _name=$1 1507 1508 if ${_rc_conf_loaded:-false}; then 1509 : 1510 else 1511 if [ -r /etc/defaults/rc.conf ]; then 1512 debug "Sourcing /etc/defaults/rc.conf" 1513 . /etc/defaults/rc.conf 1514 source_rc_confs 1515 elif [ -r /etc/rc.conf ]; then 1516 debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)." 1517 . /etc/rc.conf 1518 fi 1519 _rc_conf_loaded=true 1520 fi 1521 1522 # If a service name was specified, attempt to load 1523 # service-specific configuration 1524 if [ -n "$_name" ] ; then 1525 for _d in /etc ${local_startup}; do 1526 _d=${_d%/rc.d} 1527 if [ -f ${_d}/rc.conf.d/"$_name" ]; then 1528 debug "Sourcing ${_d}/rc.conf.d/$_name" 1529 . ${_d}/rc.conf.d/"$_name" 1530 elif [ -d ${_d}/rc.conf.d/"$_name" ] ; then 1531 local _rc 1532 for _rc in ${_d}/rc.conf.d/"$_name"/* ; do 1533 if [ -f "$_rc" ] ; then 1534 debug "Sourcing $_rc" 1535 . "$_rc" 1536 fi 1537 done 1538 fi 1539 done 1540 fi 1541 1542 # Set defaults if defined. 1543 for _var in $rcvar $rcvars; do 1544 eval _defval=\$${_var}_defval 1545 if [ -n "$_defval" ]; then 1546 eval : \${$_var:=\$${_var}_defval} 1547 fi 1548 done 1549 1550 # check obsolete rc.conf variables 1551 for _var in $rcvars_obsolete; do 1552 eval _v=\$$_var 1553 eval _msg=\$${_var}_obsolete_msg 1554 eval _new=\$${_var}_newvar 1555 case $_v in 1556 "") 1557 ;; 1558 *) 1559 if [ -z "$_new" ]; then 1560 _msg="Ignored." 1561 else 1562 eval $_new=\"\$$_var\" 1563 if [ -z "$_msg" ]; then 1564 _msg="Use \$$_new instead." 1565 fi 1566 fi 1567 warn "\$$_var is obsolete. $_msg" 1568 ;; 1569 esac 1570 done 1571} 1572 1573# 1574# load_rc_config_var name var 1575# Read the rc.conf(5) var for name and set in the 1576# current shell, using load_rc_config in a subshell to prevent 1577# unwanted side effects from other variable assignments. 1578# 1579load_rc_config_var() 1580{ 1581 if [ $# -ne 2 ]; then 1582 err 3 'USAGE: load_rc_config_var name var' 1583 fi 1584 eval $(eval '( 1585 load_rc_config '$1' >/dev/null; 1586 if [ -n "${'$2'}" -o "${'$2'-UNSET}" != "UNSET" ]; then 1587 echo '$2'=\'\''${'$2'}\'\''; 1588 fi 1589 )' ) 1590} 1591 1592# 1593# rc_usage commands 1594# Print a usage string for $0, with `commands' being a list of 1595# valid commands. 1596# 1597rc_usage() 1598{ 1599 echo -n 1>&2 "Usage: $0 [fast|force|one|quiet](" 1600 1601 _sep= 1602 for _elem; do 1603 echo -n 1>&2 "$_sep$_elem" 1604 _sep="|" 1605 done 1606 echo 1>&2 ")" 1607 exit 1 1608} 1609 1610# 1611# err exitval message 1612# Display message to stderr and log to the syslog, and exit with exitval. 1613# 1614err() 1615{ 1616 exitval=$1 1617 shift 1618 1619 if [ -x /usr/bin/logger ]; then 1620 logger "$0: ERROR: $*" 1621 fi 1622 echo 1>&2 "$0: ERROR: $*" 1623 exit $exitval 1624} 1625 1626# 1627# warn message 1628# Display message to stderr and log to the syslog. 1629# 1630warn() 1631{ 1632 if [ -x /usr/bin/logger ]; then 1633 logger "$0: WARNING: $*" 1634 fi 1635 echo 1>&2 "$0: WARNING: $*" 1636} 1637 1638# 1639# info message 1640# Display informational message to stdout and log to syslog. 1641# 1642info() 1643{ 1644 case ${rc_info} in 1645 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 1646 if [ -x /usr/bin/logger ]; then 1647 logger "$0: INFO: $*" 1648 fi 1649 echo "$0: INFO: $*" 1650 ;; 1651 esac 1652} 1653 1654# 1655# debug message 1656# If debugging is enabled in rc.conf output message to stderr. 1657# BEWARE that you don't call any subroutine that itself calls this 1658# function. 1659# 1660debug() 1661{ 1662 case ${rc_debug} in 1663 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 1664 if [ -x /usr/bin/logger ]; then 1665 logger "$0: DEBUG: $*" 1666 fi 1667 echo 1>&2 "$0: DEBUG: $*" 1668 ;; 1669 esac 1670} 1671 1672# 1673# backup_file action file cur backup 1674# Make a backup copy of `file' into `cur', and save the previous 1675# version of `cur' as `backup'. 1676# 1677# The `action' keyword can be one of the following: 1678# 1679# add `file' is now being backed up (and is possibly 1680# being reentered into the backups system). `cur' 1681# is created. 1682# 1683# update `file' has changed and needs to be backed up. 1684# If `cur' exists, it is copied to `back' 1685# and then `file' is copied to `cur'. 1686# 1687# remove `file' is no longer being tracked by the backups 1688# system. `cur' is moved `back'. 1689# 1690# 1691backup_file() 1692{ 1693 _action=$1 1694 _file=$2 1695 _cur=$3 1696 _back=$4 1697 1698 case $_action in 1699 add|update) 1700 if [ -f $_cur ]; then 1701 cp -p $_cur $_back 1702 fi 1703 cp -p $_file $_cur 1704 chown root:wheel $_cur 1705 ;; 1706 remove) 1707 mv -f $_cur $_back 1708 ;; 1709 esac 1710} 1711 1712# make_symlink src link 1713# Make a symbolic link 'link' to src from basedir. If the 1714# directory in which link is to be created does not exist 1715# a warning will be displayed and an error will be returned. 1716# Returns 0 on success, 1 otherwise. 1717# 1718make_symlink() 1719{ 1720 local src link linkdir _me 1721 src="$1" 1722 link="$2" 1723 linkdir="`dirname $link`" 1724 _me="make_symlink()" 1725 1726 if [ -z "$src" -o -z "$link" ]; then 1727 warn "$_me: requires two arguments." 1728 return 1 1729 fi 1730 if [ ! -d "$linkdir" ]; then 1731 warn "$_me: the directory $linkdir does not exist." 1732 return 1 1733 fi 1734 if ! ln -sf $src $link; then 1735 warn "$_me: unable to make a symbolic link from $link to $src" 1736 return 1 1737 fi 1738 return 0 1739} 1740 1741# devfs_rulesets_from_file file 1742# Reads a set of devfs commands from file, and creates 1743# the specified rulesets with their rules. Returns non-zero 1744# if there was an error. 1745# 1746devfs_rulesets_from_file() 1747{ 1748 local file _err _me _opts 1749 file="$1" 1750 _me="devfs_rulesets_from_file" 1751 _err=0 1752 1753 if [ -z "$file" ]; then 1754 warn "$_me: you must specify a file" 1755 return 1 1756 fi 1757 if [ ! -e "$file" ]; then 1758 debug "$_me: no such file ($file)" 1759 return 0 1760 fi 1761 1762 # Disable globbing so that the rule patterns are not expanded 1763 # by accident with matching filesystem entries. 1764 _opts=$-; set -f 1765 1766 debug "reading rulesets from file ($file)" 1767 { while read line 1768 do 1769 case $line in 1770 \#*) 1771 continue 1772 ;; 1773 \[*\]*) 1774 rulenum=`expr "$line" : "\[.*=\([0-9]*\)\]"` 1775 if [ -z "$rulenum" ]; then 1776 warn "$_me: cannot extract rule number ($line)" 1777 _err=1 1778 break 1779 fi 1780 rulename=`expr "$line" : "\[\(.*\)=[0-9]*\]"` 1781 if [ -z "$rulename" ]; then 1782 warn "$_me: cannot extract rule name ($line)" 1783 _err=1 1784 break; 1785 fi 1786 eval $rulename=\$rulenum 1787 debug "found ruleset: $rulename=$rulenum" 1788 if ! /sbin/devfs rule -s $rulenum delset; then 1789 _err=1 1790 break 1791 fi 1792 ;; 1793 *) 1794 rulecmd="${line%%"\#*"}" 1795 # evaluate the command incase it includes 1796 # other rules 1797 if [ -n "$rulecmd" ]; then 1798 debug "adding rule ($rulecmd)" 1799 if ! eval /sbin/devfs rule -s $rulenum $rulecmd 1800 then 1801 _err=1 1802 break 1803 fi 1804 fi 1805 ;; 1806 esac 1807 if [ $_err -ne 0 ]; then 1808 debug "error in $_me" 1809 break 1810 fi 1811 done } < $file 1812 case $_opts in *f*) ;; *) set +f ;; esac 1813 return $_err 1814} 1815 1816# devfs_init_rulesets 1817# Initializes rulesets from configuration files. Returns 1818# non-zero if there was an error. 1819# 1820devfs_init_rulesets() 1821{ 1822 local file _me 1823 _me="devfs_init_rulesets" 1824 1825 # Go through this only once 1826 if [ -n "$devfs_rulesets_init" ]; then 1827 debug "$_me: devfs rulesets already initialized" 1828 return 1829 fi 1830 for file in $devfs_rulesets; do 1831 if ! devfs_rulesets_from_file $file; then 1832 warn "$_me: could not read rules from $file" 1833 return 1 1834 fi 1835 done 1836 devfs_rulesets_init=1 1837 debug "$_me: devfs rulesets initialized" 1838 return 0 1839} 1840 1841# devfs_set_ruleset ruleset [dir] 1842# Sets the default ruleset of dir to ruleset. The ruleset argument 1843# must be a ruleset name as specified in devfs.rules(5) file. 1844# Returns non-zero if it could not set it successfully. 1845# 1846devfs_set_ruleset() 1847{ 1848 local devdir rs _me 1849 [ -n "$1" ] && eval rs=\$$1 || rs= 1850 [ -n "$2" ] && devdir="-m "$2"" || devdir= 1851 _me="devfs_set_ruleset" 1852 1853 if [ -z "$rs" ]; then 1854 warn "$_me: you must specify a ruleset number" 1855 return 1 1856 fi 1857 debug "$_me: setting ruleset ($rs) on mount-point (${devdir#-m })" 1858 if ! /sbin/devfs $devdir ruleset $rs; then 1859 warn "$_me: unable to set ruleset $rs to ${devdir#-m }" 1860 return 1 1861 fi 1862 return 0 1863} 1864 1865# devfs_apply_ruleset ruleset [dir] 1866# Apply ruleset number $ruleset to the devfs mountpoint $dir. 1867# The ruleset argument must be a ruleset name as specified 1868# in a devfs.rules(5) file. Returns 0 on success or non-zero 1869# if it could not apply the ruleset. 1870# 1871devfs_apply_ruleset() 1872{ 1873 local devdir rs _me 1874 [ -n "$1" ] && eval rs=\$$1 || rs= 1875 [ -n "$2" ] && devdir="-m "$2"" || devdir= 1876 _me="devfs_apply_ruleset" 1877 1878 if [ -z "$rs" ]; then 1879 warn "$_me: you must specify a ruleset" 1880 return 1 1881 fi 1882 debug "$_me: applying ruleset ($rs) to mount-point (${devdir#-m })" 1883 if ! /sbin/devfs $devdir rule -s $rs applyset; then 1884 warn "$_me: unable to apply ruleset $rs to ${devdir#-m }" 1885 return 1 1886 fi 1887 return 0 1888} 1889 1890# devfs_domount dir [ruleset] 1891# Mount devfs on dir. If ruleset is specified it is set 1892# on the mount-point. It must also be a ruleset name as specified 1893# in a devfs.rules(5) file. Returns 0 on success. 1894# 1895devfs_domount() 1896{ 1897 local devdir rs _me 1898 devdir="$1" 1899 [ -n "$2" ] && rs=$2 || rs= 1900 _me="devfs_domount()" 1901 1902 if [ -z "$devdir" ]; then 1903 warn "$_me: you must specify a mount-point" 1904 return 1 1905 fi 1906 debug "$_me: mount-point is ($devdir), ruleset is ($rs)" 1907 if ! mount -t devfs dev "$devdir"; then 1908 warn "$_me: Unable to mount devfs on $devdir" 1909 return 1 1910 fi 1911 if [ -n "$rs" ]; then 1912 devfs_init_rulesets 1913 devfs_set_ruleset $rs $devdir 1914 devfs -m $devdir rule applyset 1915 fi 1916 return 0 1917} 1918 1919# Provide a function for normalizing the mounting of memory 1920# filesystems. This should allow the rest of the code here to remain 1921# as close as possible between 5-current and 4-stable. 1922# $1 = size 1923# $2 = mount point 1924# $3 = (optional) extra mdmfs flags 1925mount_md() 1926{ 1927 if [ -n "$3" ]; then 1928 flags="$3" 1929 fi 1930 /sbin/mdmfs $flags -s $1 ${mfs_type} $2 1931} 1932 1933# Code common to scripts that need to load a kernel module 1934# if it isn't in the kernel yet. Syntax: 1935# load_kld [-e regex] [-m module] file 1936# where -e or -m chooses the way to check if the module 1937# is already loaded: 1938# regex is egrep'd in the output from `kldstat -v', 1939# module is passed to `kldstat -m'. 1940# The default way is as though `-m file' were specified. 1941load_kld() 1942{ 1943 local _loaded _mod _opt _re 1944 1945 while getopts "e:m:" _opt; do 1946 case "$_opt" in 1947 e) _re="$OPTARG" ;; 1948 m) _mod="$OPTARG" ;; 1949 *) err 3 'USAGE: load_kld [-e regex] [-m module] file' ;; 1950 esac 1951 done 1952 shift $(($OPTIND - 1)) 1953 if [ $# -ne 1 ]; then 1954 err 3 'USAGE: load_kld [-e regex] [-m module] file' 1955 fi 1956 _mod=${_mod:-$1} 1957 _loaded=false 1958 if [ -n "$_re" ]; then 1959 if kldstat -v | egrep -q -e "$_re"; then 1960 _loaded=true 1961 fi 1962 else 1963 if kldstat -q -m "$_mod"; then 1964 _loaded=true 1965 fi 1966 fi 1967 if ! $_loaded; then 1968 if ! kldload "$1"; then 1969 warn "Unable to load kernel module $1" 1970 return 1 1971 else 1972 info "$1 kernel module loaded." 1973 if [ -f "/etc/sysctl.kld.d/$1.conf" ]; then 1974 sysctl -f "/etc/sysctl.kld.d/$1.conf" 1975 fi 1976 fi 1977 else 1978 debug "load_kld: $1 kernel module already loaded." 1979 fi 1980 return 0 1981} 1982 1983# ltr str src dst [var] 1984# Change every $src in $str to $dst. 1985# Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor 1986# awk(1). If var is non-NULL, set it to the result. 1987ltr() 1988{ 1989 local _str _src _dst _out _com _var 1990 _str="$1" 1991 _src="$2" 1992 _dst="$3" 1993 _var="$4" 1994 _out="" 1995 1996 local IFS="${_src}" 1997 for _com in ${_str}; do 1998 if [ -z "${_out}" ]; then 1999 _out="${_com}" 2000 else 2001 _out="${_out}${_dst}${_com}" 2002 fi 2003 done 2004 if [ -n "${_var}" ]; then 2005 setvar "${_var}" "${_out}" 2006 else 2007 echo "${_out}" 2008 fi 2009} 2010 2011# Creates a list of providers for GELI encryption. 2012geli_make_list() 2013{ 2014 local devices devices2 2015 local provider mountpoint type options rest 2016 2017 # Create list of GELI providers from fstab. 2018 while read provider mountpoint type options rest ; do 2019 case ":${options}" in 2020 :*noauto*) 2021 noauto=yes 2022 ;; 2023 *) 2024 noauto=no 2025 ;; 2026 esac 2027 2028 case ":${provider}" in 2029 :#*) 2030 continue 2031 ;; 2032 *.eli) 2033 # Skip swap devices. 2034 if [ "${type}" = "swap" -o "${options}" = "sw" -o "${noauto}" = "yes" ]; then 2035 continue 2036 fi 2037 devices="${devices} ${provider}" 2038 ;; 2039 esac 2040 done < /etc/fstab 2041 2042 # Append providers from geli_devices. 2043 devices="${devices} ${geli_devices}" 2044 2045 for provider in ${devices}; do 2046 provider=${provider%.eli} 2047 provider=${provider#/dev/} 2048 devices2="${devices2} ${provider}" 2049 done 2050 2051 echo ${devices2} 2052} 2053 2054# Originally, root mount hold had to be released before mounting 2055# the root filesystem. This delayed the boot, so it was changed 2056# to only wait if the root device isn't readily available. This 2057# can result in rc scripts executing before all the devices - such 2058# as graid(8), or USB disks - can be accessed. This function can 2059# be used to explicitly wait for root mount holds to be released. 2060root_hold_wait() 2061{ 2062 local wait waited holders 2063 2064 waited=0 2065 while true; do 2066 holders="$(sysctl -n vfs.root_mount_hold)" 2067 if [ -z "${holders}" ]; then 2068 break; 2069 fi 2070 if [ ${waited} -eq 0 ]; then 2071 echo -n "Waiting ${root_hold_delay}s" \ 2072 "for the root mount holders: ${holders}" 2073 else 2074 echo -n . 2075 fi 2076 if [ ${waited} -ge ${root_hold_delay} ]; then 2077 echo 2078 break 2079 fi 2080 sleep 1 2081 waited=$(($waited + 1)) 2082 done 2083} 2084 2085# Find scripts in local_startup directories that use the old syntax 2086# 2087find_local_scripts_old() { 2088 zlist='' 2089 slist='' 2090 for dir in ${local_startup}; do 2091 if [ -d "${dir}" ]; then 2092 for file in ${dir}/[0-9]*.sh; do 2093 grep '^# PROVIDE:' $file >/dev/null 2>&1 && 2094 continue 2095 zlist="$zlist $file" 2096 done 2097 for file in ${dir}/[!0-9]*.sh; do 2098 grep '^# PROVIDE:' $file >/dev/null 2>&1 && 2099 continue 2100 slist="$slist $file" 2101 done 2102 fi 2103 done 2104} 2105 2106find_local_scripts_new() { 2107 local_rc='' 2108 for dir in ${local_startup}; do 2109 if [ -d "${dir}" ]; then 2110 for file in `grep -l '^# PROVIDE:' ${dir}/* 2>/dev/null`; do 2111 case "$file" in 2112 *.sample|*.pkgsave) ;; 2113 *) if [ -x "$file" ]; then 2114 local_rc="${local_rc} ${file}" 2115 fi 2116 ;; 2117 esac 2118 done 2119 fi 2120 done 2121} 2122 2123find_system_scripts() { 2124 system_rc='' 2125 for file in /etc/rc.d/*; do 2126 case "${file##*/}" in 2127 *.pkgsave) ;; 2128 *) if [ -x "$file" ]; then 2129 system_rc="${system_rc} ${file}" 2130 fi 2131 ;; 2132 esac 2133 done 2134} 2135 2136# check_required_{before|after} command 2137# Check for things required by the command before and after its precmd, 2138# respectively. The two separate functions are needed because some 2139# conditions should prevent precmd from being run while other things 2140# depend on precmd having already been run. 2141# 2142check_required_before() 2143{ 2144 local _f 2145 2146 case "$1" in 2147 start) 2148 for _f in $required_vars; do 2149 if ! checkyesno $_f; then 2150 warn "\$${_f} is not enabled." 2151 if [ -z "$rc_force" ]; then 2152 return 1 2153 fi 2154 fi 2155 done 2156 2157 for _f in $required_dirs; do 2158 if [ ! -d "${_f}/." ]; then 2159 warn "${_f} is not a directory." 2160 if [ -z "$rc_force" ]; then 2161 return 1 2162 fi 2163 fi 2164 done 2165 2166 for _f in $required_files; do 2167 if [ ! -r "${_f}" ]; then 2168 warn "${_f} is not readable." 2169 if [ -z "$rc_force" ]; then 2170 return 1 2171 fi 2172 fi 2173 done 2174 ;; 2175 esac 2176 2177 return 0 2178} 2179 2180check_required_after() 2181{ 2182 local _f _args 2183 2184 case "$1" in 2185 start) 2186 for _f in $required_modules; do 2187 case "${_f}" in 2188 *~*) _args="-e ${_f#*~} ${_f%%~*}" ;; 2189 *:*) _args="-m ${_f#*:} ${_f%%:*}" ;; 2190 *) _args="${_f}" ;; 2191 esac 2192 if ! load_kld ${_args}; then 2193 if [ -z "$rc_force" ]; then 2194 return 1 2195 fi 2196 fi 2197 done 2198 ;; 2199 esac 2200 2201 return 0 2202} 2203 2204# check_jail mib 2205# Return true if security.jail.$mib exists and set to 1. 2206 2207check_jail() 2208{ 2209 local _mib _v 2210 2211 _mib=$1 2212 if _v=$(${SYSCTL_N} "security.jail.$_mib" 2> /dev/null); then 2213 case $_v in 2214 1) return 0;; 2215 esac 2216 fi 2217 return 1 2218} 2219 2220# check_kern_features mib 2221# Return existence of kern.features.* sysctl MIB as true or 2222# false. The result will be cached in $_rc_cache_kern_features_ 2223# namespace. "0" means the kern.features.X exists. 2224 2225check_kern_features() 2226{ 2227 local _v 2228 2229 [ -n "$1" ] || return 1; 2230 eval _v=\$_rc_cache_kern_features_$1 2231 [ -n "$_v" ] && return "$_v"; 2232 2233 if ${SYSCTL_N} kern.features.$1 > /dev/null 2>&1; then 2234 eval _rc_cache_kern_features_$1=0 2235 return 0 2236 else 2237 eval _rc_cache_kern_features_$1=1 2238 return 1 2239 fi 2240} 2241 2242# check_namevarlist var 2243# Return "0" if ${name}_var is reserved in rc.subr. 2244 2245_rc_namevarlist="program chroot chdir env flags fib nice user group groups prepend setup" 2246check_namevarlist() 2247{ 2248 local _v 2249 2250 for _v in $_rc_namevarlist; do 2251 case $1 in 2252 $_v) return 0 ;; 2253 esac 2254 done 2255 2256 return 1 2257} 2258 2259# _echoonce var msg mode 2260# mode=0: Echo $msg if ${$var} is empty. 2261# After doing echo, a string is set to ${$var}. 2262# 2263# mode=1: Echo $msg if ${$var} is a string with non-zero length. 2264# 2265_echoonce() 2266{ 2267 local _var _msg _mode 2268 eval _var=\$$1 2269 _msg=$2 2270 _mode=$3 2271 2272 case $_mode in 2273 1) [ -n "$_var" ] && echo "$_msg" ;; 2274 *) [ -z "$_var" ] && echo -n "$_msg" && eval "$1=finished" ;; 2275 esac 2276} 2277 2278# If the loader env variable rc.debug is set, turn on debugging. rc.conf will 2279# still override this, but /etc/defaults/rc.conf can't unconditionally set this 2280# since it would undo what we've done here. 2281if kenv -q rc.debug > /dev/null ; then 2282 rc_debug=YES 2283fi 2284 2285boottrace_cmd=`command -v boottrace` 2286if [ -n "$boottrace_cmd" ] && [ "`${SYSCTL_N} -q kern.boottrace.enabled`" = "1" ]; then 2287 rc_boottrace=YES 2288fi 2289