rc.subr revision 1.46
1# $NetBSD: rc.subr,v 1.46 2002/03/22 04:16:38 lukem Exp $ 2# 3# Copyright (c) 1997-2002 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# 3. All advertising materials mentioning features or use of this software 18# must display the following acknowledgement: 19# This product includes software developed by the NetBSD 20# Foundation, Inc. and its contributors. 21# 4. Neither the name of The NetBSD Foundation nor the names of its 22# contributors may be used to endorse or promote products derived 23# from this software without specific prior written permission. 24# 25# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35# POSSIBILITY OF SUCH DAMAGE. 36# 37# rc.subr 38# functions used by various rc scripts 39# 40 41# 42# functions 43# --------- 44 45# 46# checkyesno var 47# Test $1 variable, and warn if not set to YES or NO. 48# Return 0 if it's "yes" (et al), nonzero otherwise. 49# 50checkyesno() 51{ 52 eval _value=\$${1} 53 case $_value in 54 55 # "yes", "true", "on", or "1" 56 [Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1) 57 return 0 58 ;; 59 60 # "no", "false", "off", or "0" 61 [Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0) 62 return 1 63 ;; 64 *) 65 warn "\$${1} is not set properly." 66 return 1 67 ;; 68 esac 69} 70 71# reverse_list list 72# print the list in reverse order 73# 74reverse_list() 75{ 76 _revlist= 77 for _revfile in $*; do 78 _revlist="$_revfile $_revlist" 79 done 80 echo $_revlist 81} 82 83# 84# mount_critical_filesystems 85# Go through the list of critical filesystems, checking each one 86# to see if it is mounted, and if it is not, mounting it. 87# 88mount_critical_filesystems() 89{ 90 if [ $1 = local ]; then 91 _fslist=$critical_filesystems_beforenet 92 else 93 _fslist=$critical_filesystems 94 fi 95 for _fs in $_fslist; do 96 mount | ( 97 _ismounted=no 98 while read what _on on _type type; do 99 if [ $on = $_fs ]; then 100 _ismounted=yes 101 fi 102 done 103 if [ $_ismounted = no ]; then 104 mount $_fs >/dev/null 2>&1 105 fi 106 ) 107 done 108} 109 110# 111# check_pidfile pidfile procname [interpreter] 112# Parses the first line of pidfile for a PID, and ensures 113# that the process is running and matches procname. 114# Prints the matching PID upon success, nothing otherwise. 115# interpreter is optional; see _find_processes() for details. 116# 117check_pidfile() 118{ 119 _pidfile=$1 120 _procname=$2 121 _interpreter=$3 122 if [ -z "$_pidfile" -o -z "$_procname" ]; then 123 err 3 'USAGE: check_pidfile pidfile procname [interpreter]' 124 fi 125 if [ ! -f $_pidfile ]; then 126 return 127 fi 128 read _pid _junk < $_pidfile 129 if [ -z "$_pid" ]; then 130 return 131 fi 132 _find_processes $_procname ${_interpreter:-.} '-p '"$_pid" 133} 134 135# 136# check_process procname [interpreter] 137# Ensures that a process (or processes) named procname is running. 138# Prints a list of matching PIDs. 139# interpreter is optional; see _find_processes() for details. 140# 141check_process() 142{ 143 _procname=$1 144 _interpreter=$2 145 if [ -z "$_procname" ]; then 146 err 3 'USAGE: check_process procname [interpreter]' 147 fi 148 _find_processes $_procname ${_interpreter:-.} '-ax' 149} 150 151# 152# _find_processes procname interpreter psargs 153# Search for procname in the output of ps generated by psargs. 154# Prints the PIDs of any matching processes, space separated. 155# 156# If interpreter == ".", check the following variations of procname 157# against the first word of each command: 158# procname 159# `basename procname` 160# `basename procname` + ":" 161# "(" + `basename procname` + ")" 162# 163# If interpreter != ".", read the first line of procname, remove the 164# leading #!, normalise whitespace, append procname, and attempt to 165# match that against each command, either as is, or with extra words 166# at the end. 167# 168_find_processes() 169{ 170 if [ $# -ne 3 ]; then 171 err 3 'USAGE: _find_processes procname interpreter psargs' 172 fi 173 _procname=$1 174 _interpreter=$2 175 _psargs=$3 176 177 _pref= 178 if [ $_interpreter != "." ]; then # an interpreted script 179 read _interp < $_procname # read interpreter name 180 _interp=${_interp#\#!} # strip #! 181 set -- $_interp 182 if [ $_interpreter != $1 ]; then 183 warn "\$command_interpreter $_interpreter != $1" 184 fi 185 _interp="$* $_procname" # cleanup spaces, add _procname 186 _fp_args='_argv' 187 _fp_match='case "$_argv" in 188 ${_interp}|"${_interp} "*)' 189 else # a normal daemon 190 _procnamebn=${_procname##*/} 191 _fp_args='_arg0 _argv' 192 _fp_match='case "$_arg0" in 193 $_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})")' 194 fi 195 196 _proccheck=' 197 ps -o "pid,command" '"$_psargs"' | 198 while read _npid '"$_fp_args"'; do 199 case "$_npid" in 200 PID) 201 continue ;; 202 esac ; '"$_fp_match"' 203 echo -n "$_pref$_npid" ; 204 _pref=" " 205 ;; 206 esac 207 done' 208 209#echo 1>&2 "proccheck is :$_proccheck:" 210 eval $_proccheck 211} 212 213# 214# wait_for_pids pid [pid ...] 215# spins until none of the pids exist 216# 217wait_for_pids() 218{ 219 _list=$* 220 if [ -z "$_list" ]; then 221 return 222 fi 223 _prefix= 224 while true; do 225 _nlist=""; 226 for _j in $_list; do 227 if kill -0 $_j 2>/dev/null; then 228 _nlist="${_nlist}${_nlist:+ }$_j" 229 fi 230 done 231 if [ -z "$_nlist" ]; then 232 break 233 fi 234 _list=$_nlist 235 echo -n ${_prefix:-"Waiting for PIDS: "}$_list 236 _prefix=", " 237 sleep 2 238 done 239 if [ -n "$_prefix" ]; then 240 echo "." 241 fi 242} 243 244# 245# run_rc_command argument 246# Search for argument in the list of supported commands, which is: 247# "start stop restart rcvar status poll ${extra_commands}" 248# If there's a match, run ${argument}_cmd or the default method 249# (see below). 250# 251# If argument has a given prefix, then change the operation as follows: 252# Prefix Operation 253# ------ --------- 254# fast Skip the pid check, and set rc_fast=YES 255# force Set ${rcvar} to YES, and set rc_force=YES. 256# 257# The following globals are used: 258# 259# Name Needed Purpose 260# ---- ------ ------- 261# name y Name of script. 262# 263# command n Full path to command. 264# Not needed if ${rc_arg}_cmd is set for 265# each keyword. 266# 267# command_args n Optional args/shell directives for command. 268# 269# command_interpreter n If not empty, command is interpreted, so 270# call check_{pidfile,process}() appropriately. 271# 272# extra_commands n List of extra commands supported. 273# 274# pidfile n If set, use check_pidfile $pidfile $command, 275# otherwise use check_process $command. 276# In either case, only check if $command is set. 277# 278# procname n Process name to check for instead of $command. 279# 280# rcvar n This is checked with checkyesno to determine 281# if the action should be run. 282# 283# ${name}_chroot n Directory to chroot to before running ${command} 284# Requires /usr to be mounted. 285# 286# ${name}_chdir n Directory to cd to before running ${command} 287# (if not using ${name}_chroot). 288# 289# ${name}_flags n Arguments to call ${command} with. 290# NOTE: $flags from the parent environment 291# can be used to override this. 292# 293# ${name}_nice n Nice level to run ${command} at. 294# 295# ${name}_user n User to run ${command} as, using su(1) if not 296# using ${name}_chroot. 297# Requires /usr to be mounted. 298# 299# ${name}_group n Group to run chrooted ${command} as. 300# Requires /usr to be mounted. 301# 302# ${name}_groups n Comma separated list of supplementary groups 303# to run the chrooted ${command} with. 304# Requires /usr to be mounted. 305# 306# ${rc_arg}_cmd n If set, use this as the method when invoked; 307# Otherwise, use default command (see below) 308# 309# ${rc_arg}_precmd n If set, run just before performing the 310# ${rc_arg}_cmd method in the default 311# operation (i.e, after checking for required 312# bits and process (non)existence). 313# If this completes with a non-zero exit code, 314# don't run ${rc_arg}_cmd. 315# 316# ${rc_arg}_postcmd n If set, run just after performing the 317# ${rc_arg}_cmd method, if that method 318# returned a zero exit code. 319# 320# required_dirs n If set, check for the existence of the given 321# directories before running the default 322# (re)start command. 323# 324# required_files n If set, check for the readability of the given 325# files before running the default (re)start 326# command. 327# 328# required_vars n If set, perform checkyesno on each of the 329# listed variables before running the default 330# (re)start command. 331# 332# Default behaviour for a given argument, if no override method is 333# provided: 334# 335# Argument Default behaviour 336# -------- ----------------- 337# start if !running && checkyesno ${rcvar} 338# ${command} 339# 340# stop if ${pidfile} 341# rc_pid=$(check_pidfile $pidfile $command) 342# else 343# rc_pid=$(check_process $command) 344# kill $sig_stop $rc_pid 345# wait_for_pids $rc_pid 346# ($sig_stop defaults to TERM.) 347# 348# reload Similar to stop, except use $sig_reload instead, 349# and doesn't wait_for_pids. 350# $sig_reload defaults to HUP. 351# 352# restart Run `stop' then `start'. 353# 354# status Show if ${command} is running, etc. 355# 356# poll Wait for ${command} to exit. 357# 358# rcvar Display what rc.conf variable is used (if any). 359# 360# Variables available to methods, and after run_rc_command() has 361# completed: 362# 363# Variable Purpose 364# -------- ------- 365# rc_arg Argument to command, after fast/force processing 366# performed 367# 368# rc_flags Flags to start the default command with. 369# Defaults to ${name}_flags, unless overridden 370# by $flags from the environment. 371# This variable may be changed by the precmd method. 372# 373# rc_pid PID of command (if appropriate) 374# 375# rc_fast Not empty if "fast" was provided (q.v.) 376# 377# rc_force Not empty if "force" was provided (q.v.) 378# 379# 380run_rc_command() 381{ 382 rc_arg=$1 383 if [ -z "$name" ]; then 384 err 3 'run_rc_command: $name is not set.' 385 fi 386 387 case "$rc_arg" in 388 fast*) # "fast" prefix; don't check pid 389 rc_arg=${rc_arg#fast} 390 rc_fast=YES 391 ;; 392 force*) # "force prefix; always start 393 rc_arg=${rc_arg#force} 394 rc_force=YES 395 if [ -n "${rcvar}" ]; then 396 eval ${rcvar}=YES 397 fi 398 ;; 399 esac 400 401 _keywords="start stop restart rcvar $extra_commands" 402 rc_pid= 403 _pidcmd= 404 _procname=${procname:-${command}} 405 406 # setup pid check command if not fast 407 if [ -z "$rc_fast" -a -n "$_procname" ]; then 408 if [ -n "$pidfile" ]; then 409 _pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')' 410 else 411 _pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')' 412 fi 413 if [ -n "$_pidcmd" ]; then 414 _keywords="${_keywords} status poll" 415 fi 416 fi 417 418 if [ -z "$rc_arg" ]; then 419 rc_usage "$_keywords" 420 fi 421 422 if [ -n "$flags" ]; then # allow override from environment 423 rc_flags=$flags 424 else 425 eval rc_flags=\$${name}_flags 426 fi 427 eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \ 428 _nice=\$${name}_nice _user=\$${name}_user \ 429 _group=\$${name}_group _groups=\$${name}_groups 430 431 if [ -n "$_user" ]; then # unset $_user if running as that user 432 if [ "$_user" = "$(id -un)" ]; then 433 unset _user 434 fi 435 fi 436 437 # if ${rcvar} is set, and $1 is not 438 # "rcvar", then run 439 # checkyesno ${rcvar} 440 # and return if that failed 441 # 442 if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" ]; then 443 if ! checkyesno ${rcvar}; then 444 return 0 445 fi 446 fi 447 448 eval $_pidcmd # determine the pid if necessary 449 450 for _elem in $_keywords; do 451 if [ "$_elem" != "$rc_arg" ]; then 452 continue 453 fi 454 455 # if there's a custom ${XXX_cmd}, 456 # run that instead of the default 457 # 458 eval _cmd=\$${rc_arg}_cmd _precmd=\$${rc_arg}_precmd \ 459 _postcmd=\$${rc_arg}_postcmd 460 if [ -n "$_cmd" ]; then 461 # if the precmd failed and force 462 # isn't set, exit 463 # 464 if ! eval $_precmd && [ -z "$rc_force" ]; then 465 return 1 466 fi 467 468 if ! eval $_cmd && [ -z "$rc_force" ]; then 469 return 1 470 fi 471 eval $_postcmd 472 return 0 473 fi 474 475 case "$rc_arg" in # default operations... 476 477 status) 478 if [ -n "$rc_pid" ]; then 479 echo "${name} is running as pid $rc_pid." 480 else 481 echo "${name} is not running." 482 return 1 483 fi 484 ;; 485 486 start) 487 if [ -n "$rc_pid" ]; then 488 echo "${name} already running? (pid=$rc_pid)." 489 exit 1 490 fi 491 492 if [ ! -x $command ]; then 493 return 0 494 fi 495 496 # check for required variables, 497 # directories, and files 498 # 499 for _f in $required_vars; do 500 if ! checkyesno $_f; then 501 warn "\$${_f} is not set." 502 if [ -z "$rc_force" ]; then 503 return 1 504 fi 505 fi 506 done 507 for _f in $required_dirs; do 508 if [ ! -d "${_f}/." ]; then 509 warn "${_f} is not a directory." 510 if [ -z "$rc_force" ]; then 511 return 1 512 fi 513 fi 514 done 515 for _f in $required_files; do 516 if [ ! -r "${_f}" ]; then 517 warn "${_f} is not readable." 518 if [ -z "$rc_force" ]; then 519 return 1 520 fi 521 fi 522 done 523 524 # if the precmd failed and force 525 # isn't set, exit 526 # 527 if ! eval $_precmd && [ -z "$rc_force" ]; then 528 return 1 529 fi 530 531 # setup the command to run, and run it 532 # 533 echo "Starting ${name}." 534 if [ -n "$_chroot" ]; then 535 _doit="\ 536${_nice:+nice -n $_nice }\ 537chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\ 538$_chroot $command $rc_flags $command_args" 539 else 540 _doit="\ 541${_chdir:+cd $_chdir; }\ 542${_nice:+nice -n $_nice }\ 543$command $rc_flags $command_args" 544 if [ -n "$_user" ]; then 545 _doit="su -m $_user -c 'sh -c \"$_doit\"'" 546 fi 547 fi 548 549 # if the cmd failed and force 550 # isn't set, exit 551 # 552 if ! eval $_doit && [ -z "$rc_force" ]; then 553 return 1 554 fi 555 556 # finally, run postcmd 557 # 558 eval $_postcmd 559 ;; 560 561 stop) 562 if [ -z "$rc_pid" ]; then 563 if [ -n "$pidfile" ]; then 564 echo \ 565 "${name} not running? (check $pidfile)." 566 else 567 echo "${name} not running?" 568 fi 569 exit 1 570 fi 571 572 # if the precmd failed and force 573 # isn't set, exit 574 # 575 if ! eval $_precmd && [ -z "$rc_force" ]; then 576 return 1 577 fi 578 579 # send the signal to stop 580 # 581 echo "Stopping ${name}." 582 _doit="kill -${sig_stop:-TERM} $rc_pid" 583 if [ -n "$_user" ]; then 584 _doit="su -m $_user -c 'sh -c \"$_doit\"'" 585 fi 586 587 # if the stop cmd failed and force 588 # isn't set, exit 589 # 590 if ! eval $_doit && [ -z "$rc_force" ]; then 591 return 1 592 fi 593 594 # wait for the command to exit, 595 # and run postcmd. 596 wait_for_pids $rc_pid 597 eval $_postcmd 598 ;; 599 600 reload) 601 if [ -z "$rc_pid" ]; then 602 if [ -n "$pidfile" ]; then 603 echo \ 604 "${name} not running? (check $pidfile)." 605 else 606 echo "${name} not running?" 607 fi 608 exit 1 609 fi 610 echo "Reloading ${name} config files." 611 if ! eval $_precmd && [ -z "$rc_force" ]; then 612 return 1 613 fi 614 _doit="kill -${sig_reload:-HUP} $rc_pid" 615 if [ -n "$_user" ]; then 616 _doit="su -m $_user -c 'sh -c \"$_doit\"'" 617 fi 618 if ! eval $_doit && [ -z "$rc_force" ]; then 619 return 1 620 fi 621 eval $_postcmd 622 ;; 623 624 restart) 625 if ! eval $_precmd && [ -z "$rc_force" ]; then 626 return 1 627 fi 628 # prevent restart being called more 629 # than once by any given script 630 # 631 if [ -n "$_rc_restart_done" ]; then 632 return 0 633 fi 634 _rc_restart_done=YES 635 636 ( $0 ${rc_force:+force}stop ) 637 $0 ${rc_force:+force}start 638 639 eval $_postcmd 640 ;; 641 642 poll) 643 if [ -n "$rc_pid" ]; then 644 wait_for_pids $rc_pid 645 fi 646 ;; 647 648 rcvar) 649 echo "# $name" 650 if [ -n "$rcvar" ]; then 651 if checkyesno ${rcvar}; then 652 echo "\$${rcvar}=YES" 653 else 654 echo "\$${rcvar}=NO" 655 fi 656 fi 657 ;; 658 659 *) 660 rc_usage "$_keywords" 661 ;; 662 663 esac 664 return 0 665 done 666 667 echo 1>&2 "$0: unknown directive '$rc_arg'." 668 rc_usage "$_keywords" 669 exit 1 670} 671 672# 673# run_rc_script file arg 674# Start the script `file' with `arg', and correctly handle the 675# return value from the script. If `file' ends with `.sh', it's 676# sourced into the current environment. If `file' appears to be 677# a backup or scratch file, ignore it. Otherwise if it's 678# executable run as a child process. 679# 680run_rc_script() 681{ 682 _file=$1 683 _arg=$2 684 if [ -z "$_file" -o -z "$_arg" ]; then 685 err 3 'USAGE: run_rc_script file arg' 686 fi 687 688 unset name command command_args command_interpreter \ 689 extra_commands pidfile procname \ 690 rcvar required_dirs required_files required_vars 691 eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd 692 693 case "$_file" in 694 *.sh) # run in current shell 695 set $_arg ; . $_file 696 ;; 697 *[~#]|*.OLD|*.orig) # scratch file; skip 698 warn "Ignoring scratch file $_file" 699 ;; 700 *) # run in subshell 701 if [ -x $_file ]; then 702 if [ -n "$rc_fast_and_loose" ]; then 703 set $_arg ; . $_file 704 else 705 ( set $_arg ; . $_file ) 706 fi 707 fi 708 ;; 709 esac 710} 711 712# 713# load_rc_config 714# Source in the configuration file for a given command. 715# 716load_rc_config() 717{ 718 _command=$1 719 if [ -z "$_command" ]; then 720 err 3 'USAGE: load_rc_config command' 721 fi 722 723 if [ -z "$_rc_conf_loaded" ]; then 724 . /etc/rc.conf 725 _rc_conf_loaded=YES 726 fi 727 if [ -f /etc/rc.conf.d/"$_command" ]; then 728 . /etc/rc.conf.d/"$_command" 729 fi 730} 731 732 733# 734# rc_usage commands 735# Print a usage string for $0, with `commands' being a list of 736# valid commands. 737# 738rc_usage() 739{ 740 echo -n 1>&2 "Usage: $0 [fast|force](" 741 742 _sep= 743 for _elem in $*; do 744 echo -n 1>&2 "$_sep$_elem" 745 _sep="|" 746 done 747 echo 1>&2 ")" 748 exit 1 749} 750 751# 752# err exitval message 753# Display message to stderr and log to the syslog, and exit with exitval. 754# 755err() 756{ 757 exitval=$1 758 shift 759 760 logger "$0: ERROR: $*" 761 echo 1>&2 "$0: ERROR: $*" 762 exit $exitval 763} 764 765# 766# warn message 767# Display message to stderr and log to the syslog. 768# 769warn() 770{ 771 logger "$0: WARNING: $*" 772 echo 1>&2 "$0: WARNING: $*" 773} 774 775# 776# backup_file action file cur backup 777# Make a backup copy of `file' into `cur', and save the previous 778# version of `cur' as `backup' or use rcs for archiving. 779# 780# This routine checks the value of the backup_uses_rcs variable, 781# which can be either YES or NO. 782# 783# The `action' keyword can be one of the following: 784# 785# add `file' is now being backed up (and is possibly 786# being reentered into the backups system). `cur' 787# is created and RCS files, if necessary, are 788# created as well. 789# 790# update `file' has changed and needs to be backed up. 791# If `cur' exists, it is copied to to `back' or 792# checked into RCS (if the repository file is old), 793# and then `file' is copied to `cur'. Another RCS 794# check in done here if RCS is being used. 795# 796# remove `file' is no longer being tracked by the backups 797# system. If RCS is not being used, `cur' is moved 798# to `back', otherwise an empty file is checked in, 799# and then `cur' is removed. 800# 801# 802backup_file() 803{ 804 _action=$1 805 _file=$2 806 _cur=$3 807 _back=$4 808 809 if checkyesno backup_uses_rcs; then 810 _msg0="backup archive" 811 _msg1="update" 812 813 # ensure that history file is not locked 814 if [ -f $_cur,v ]; then 815 rcs -q -u -U -M $_cur 816 fi 817 818 # ensure after switching to rcs that the 819 # current backup is not lost 820 if [ -f $_cur ]; then 821 # no archive, or current newer than archive 822 if [ ! -f $_cur,v -o $_cur -nt $_cur,v ]; then 823 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur 824 rcs -q -kb -U $_cur 825 fi 826 fi 827 828 case $_action in 829 add|update) 830 cp -p $_file $_cur 831 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur 832 rcs -q -kb -U $_cur 833 chown root:wheel $_cur $_cur,v 834 ;; 835 remove) 836 cp /dev/null $_cur 837 ci -q -f -u -t-"$_msg0" -m"$_msg1" $_cur 838 rcs -q -kb -U $_cur 839 chown root:wheel $_cur $_cur,v 840 rm $_cur 841 ;; 842 esac 843 else 844 case $_action in 845 add|update) 846 if [ -f $_cur ]; then 847 cp -p $_cur $_back 848 fi 849 cp -p $_file $_cur 850 chown root:wheel $_cur 851 ;; 852 remove) 853 mv -f $_cur $_back 854 ;; 855 esac 856 fi 857} 858