| Current Path : /etc/ |
| Current File : //etc/rc.subr |
# $NetBSD: rc.subr,v 1.67 2006/10/07 11:25:15 elad Exp $
# $FreeBSD: releng/12.1/libexec/rc/rc.subr 343045 2019-01-15 15:52:23Z kevans $
#
# Copyright (c) 1997-2004 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Luke Mewburn.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# rc.subr
# functions used by various rc scripts
#
: ${RC_PID:=$$}; export RC_PID
#
# Operating System dependent/independent variables
#
if [ -n "${_rc_subr_loaded}" ]; then
return
fi
_rc_subr_loaded="YES"
SYSCTL="/sbin/sysctl"
SYSCTL_N="${SYSCTL} -n"
SYSCTL_W="${SYSCTL}"
PROTECT="/usr/bin/protect"
ID="/usr/bin/id"
IDCMD="if [ -x $ID ]; then $ID -un; fi"
PS="/bin/ps -ww"
JID=0
# rc_service provides the path to the service script that we are executing.
# This is not being set here in an execution context, necessarily, so it's
# really just a reasonable guess, and it will get overwritten later if
# we are executing from some other means than direct execution by service(8)
# or manual invocation of the service script. The prime example of this is
# during system startup, all rc scripts will be invoked via /etc/rc, so
# run_rc_script will overwrite rc_service with the file being sourced.
rc_service="$0"
#
# functions
# ---------
# list_vars pattern
# List vars matching pattern.
#
list_vars()
{
set | { while read LINE; do
var="${LINE%%=*}"
case "$var" in
"$LINE"|*[!a-zA-Z0-9_]*) continue ;;
$1) echo $var
esac
done; }
}
# set_rcvar [var] [defval] [desc]
#
# Echo or define a rc.conf(5) variable name. Global variable
# $rcvars is used.
#
# If no argument is specified, echo "${name}_enable".
#
# If only a var is specified, echo "${var}_enable".
#
# If var and defval are specified, the ${var} is defined as
# rc.conf(5) variable and the default value is ${defvar}. An
# optional argument $desc can also be specified to add a
# description for that.
#
set_rcvar()
{
local _var
case $# in
0) echo ${name}_enable ;;
1) echo ${1}_enable ;;
*)
debug "set_rcvar: \$$1=$2 is added" \
" as a rc.conf(5) variable."
_var=$1
rcvars="${rcvars# } $_var"
eval ${_var}_defval=\"$2\"
shift 2
eval ${_var}_desc=\"$*\"
;;
esac
}
# set_rcvar_obsolete oldvar [newvar] [msg]
# Define obsolete variable.
# Global variable $rcvars_obsolete is used.
#
set_rcvar_obsolete()
{
local _var
_var=$1
debug "set_rcvar_obsolete: \$$1(old) -> \$$2(new) is defined"
rcvars_obsolete="${rcvars_obsolete# } $1"
eval ${1}_newvar=\"$2\"
shift 2
eval ${_var}_obsolete_msg=\"$*\"
}
#
# force_depend script [rcvar]
# Force a service to start. Intended for use by services
# to resolve dependency issues.
# $1 - filename of script, in /etc/rc.d, to run
# $2 - name of the script's rcvar (minus the _enable)
#
force_depend()
{
local _depend _dep_rcvar
_depend="$1"
_dep_rcvar="${2:-$1}_enable"
[ -n "$rc_fast" ] && ! checkyesno always_force_depends &&
checkyesno $_dep_rcvar && return 0
/etc/rc.d/${_depend} forcestatus >/dev/null 2>&1 && return 0
info "${name} depends on ${_depend}, which will be forced to start."
if ! /etc/rc.d/${_depend} forcestart; then
warn "Unable to force ${_depend}. It may already be running."
return 1
fi
}
#
# checkyesno var
# Test $1 variable, and warn if not set to YES or NO.
# Return 0 if it's "yes" (et al), nonzero otherwise.
#
checkyesno()
{
eval _value=\$${1}
debug "checkyesno: $1 is set to $_value."
case $_value in
# "yes", "true", "on", or "1"
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
return 0
;;
# "no", "false", "off", or "0"
[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
return 1
;;
*)
warn "\$${1} is not set properly - see rc.conf(5)."
return 1
;;
esac
}
#
# reverse_list list
# print the list in reverse order
#
reverse_list()
{
_revlist=
for _revfile; do
_revlist="$_revfile $_revlist"
done
echo $_revlist
}
# stop_boot always
# If booting directly to multiuser or $always is enabled,
# send SIGTERM to the parent (/etc/rc) to abort the boot.
# Otherwise just exit.
#
stop_boot()
{
local always
case $1 in
# "yes", "true", "on", or "1"
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
always=true
;;
*)
always=false
;;
esac
if [ "$autoboot" = yes -o "$always" = true ]; then
echo "ERROR: ABORTING BOOT (sending SIGTERM to parent)!"
kill -TERM ${RC_PID}
fi
exit 1
}
#
# mount_critical_filesystems type
# Go through the list of critical filesystems as provided in
# the rc.conf(5) variable $critical_filesystems_${type}, checking
# each one to see if it is mounted, and if it is not, mounting it.
#
mount_critical_filesystems()
{
eval _fslist=\$critical_filesystems_${1}
for _fs in $_fslist; do
mount | (
_ismounted=false
while read what _on on _type type; do
if [ $on = $_fs ]; then
_ismounted=true
fi
done
if $_ismounted; then
:
else
mount $_fs >/dev/null 2>&1
fi
)
done
}
#
# check_pidfile pidfile procname [interpreter]
# Parses the first line of pidfile for a PID, and ensures
# that the process is running and matches procname.
# Prints the matching PID upon success, nothing otherwise.
# interpreter is optional; see _find_processes() for details.
#
check_pidfile()
{
_pidfile=$1
_procname=$2
_interpreter=$3
if [ -z "$_pidfile" -o -z "$_procname" ]; then
err 3 'USAGE: check_pidfile pidfile procname [interpreter]'
fi
if [ ! -f $_pidfile ]; then
debug "pid file ($_pidfile): not readable."
return
fi
read _pid _junk < $_pidfile
if [ -z "$_pid" ]; then
debug "pid file ($_pidfile): no pid in file."
return
fi
_find_processes $_procname ${_interpreter:-.} '-p '"$_pid"
}
#
# check_process procname [interpreter]
# Ensures that a process (or processes) named procname is running.
# Prints a list of matching PIDs.
# interpreter is optional; see _find_processes() for details.
#
check_process()
{
_procname=$1
_interpreter=$2
if [ -z "$_procname" ]; then
err 3 'USAGE: check_process procname [interpreter]'
fi
_find_processes $_procname ${_interpreter:-.} '-ax'
}
#
# _find_processes procname interpreter psargs
# Search for procname in the output of ps generated by psargs.
# Prints the PIDs of any matching processes, space separated.
#
# If interpreter == ".", check the following variations of procname
# against the first word of each command:
# procname
# `basename procname`
# `basename procname` + ":"
# "(" + `basename procname` + ")"
# "[" + `basename procname` + "]"
#
# If interpreter != ".", read the first line of procname, remove the
# leading #!, normalise whitespace, append procname, and attempt to
# match that against each command, either as is, or with extra words
# at the end. As an alternative, to deal with interpreted daemons
# using perl, the basename of the interpreter plus a colon is also
# tried as the prefix to procname.
#
_find_processes()
{
if [ $# -ne 3 ]; then
err 3 'USAGE: _find_processes procname interpreter psargs'
fi
_procname=$1
_interpreter=$2
_psargs=$3
_pref=
if [ $_interpreter != "." ]; then # an interpreted script
_script="${_chroot}${_chroot:+/}$_procname"
if [ -r "$_script" ]; then
read _interp < $_script # read interpreter name
case "$_interp" in
\#!*)
_interp=${_interp#\#!} # strip #!
set -- $_interp
case $1 in
*/bin/env)
shift # drop env to get real name
;;
esac
if [ $_interpreter != $1 ]; then
warn "\$command_interpreter $_interpreter != $1"
fi
;;
*)
warn "no shebang line in $_script"
set -- $_interpreter
;;
esac
else
warn "cannot read shebang line from $_script"
set -- $_interpreter
fi
_interp="$* $_procname" # cleanup spaces, add _procname
_interpbn=${1##*/}
_fp_args='_argv'
_fp_match='case "$_argv" in
${_interp}|"${_interp} "*|"[${_interpbn}]"|"${_interpbn}: ${_procname}"*)'
else # a normal daemon
_procnamebn=${_procname##*/}
_fp_args='_arg0 _argv'
_fp_match='case "$_arg0" in
$_procname|$_procnamebn|${_procnamebn}:|"(${_procnamebn})"|"[${_procnamebn}]")'
fi
_proccheck="\
$PS 2>/dev/null -o pid= -o jid= -o command= $_psargs"' |
while read _npid _jid '"$_fp_args"'; do
'"$_fp_match"'
if [ "$JID" -eq "$_jid" ];
then echo -n "$_pref$_npid";
_pref=" ";
fi
;;
esac
done'
# debug "in _find_processes: proccheck is ($_proccheck)."
eval $_proccheck
}
# sort_lite [-b] [-n] [-k POS] [-t SEP]
# A lite version of sort(1) (supporting a few options) that can be used
# before the real sort(1) is available (e.g., in scripts that run prior
# to mountcritremote). Requires only shell built-in functionality.
#
sort_lite()
{
local funcname=sort_lite
local sort_sep="$IFS" sort_ignore_leading_space=
local sort_field=0 sort_strict_fields= sort_numeric=
local nitems=0 skip_leading=0 trim=
local OPTIND flag
while getopts bnk:t: flag; do
case "$flag" in
b) sort_ignore_leading_space=1 ;;
n) sort_numeric=1 sort_ignore_leading_space=1 ;;
k) sort_field="${OPTARG%%,*}" ;; # only up to first comma
# NB: Unlike sort(1) only one POS allowed
t) sort_sep="$OPTARG"
if [ ${#sort_sep} -gt 1 ]; then
echo "$funcname: multi-character tab \`$sort_sep'" >&2
return 1
fi
sort_strict_fields=1
;;
\?) return 1 ;;
esac
done
shift $(( $OPTIND - 1 ))
# Create transformation pattern to trim leading text if desired
case "$sort_field" in
""|[!0-9]*|*[!0-9.]*)
echo "$funcname: invalid sort field \`$sort_field'" >&2
return 1
;;
*.*)
skip_leading=${sort_field#*.} sort_field=${sort_field%%.*}
while [ ${skip_leading:-0} -gt 1 ] 2> /dev/null; do
trim="$trim?" skip_leading=$(( $skip_leading - 1 ))
done
esac
# Copy input to series of local numbered variables
# NB: IFS of NULL preserves leading whitespace
local LINE
while IFS= read -r LINE || [ "$LINE" ]; do
nitems=$(( $nitems + 1 ))
local src_$nitems="$LINE"
done
#
# Sort numbered locals using insertion sort
#
local curitem curitem_orig curitem_mod curitem_haskey
local dest dest_orig dest_mod dest_haskey
local d gt n
local i=1
while [ $i -le $nitems ]; do
curitem_haskey=1 # Assume sort field (-k POS) exists
eval curitem=\"\$src_$i\"
curitem_mod="$curitem" # for modified comparison
curitem_orig="$curitem" # for original comparison
# Trim leading whitespace if desired
if [ "$sort_ignore_leading_space" ]; then
while case "$curitem_orig" in
[$IFS]*) : ;; *) false; esac
do
curitem_orig="${curitem_orig#?}"
done
curitem_mod="$curitem_orig"
fi
# Shift modified comparison value if sort field (-k POS) is > 1
n=$sort_field
while [ $n -gt 1 ]; do
case "$curitem_mod" in
*[$sort_sep]*)
# Cut text up-to (and incl.) first separator
curitem_mod="${curitem_mod#*[$sort_sep]}"
# Skip NULLs unless strict field splitting
[ "$sort_strict_fields" ] ||
[ "${curitem_mod%%[$sort_sep]*}" ] ||
[ $n -eq 2 ] ||
continue
;;
*)
# Asked for a field that doesn't exist
curitem_haskey= break
esac
n=$(( $n - 1 ))
done
# Trim trailing words if sort field >= 1
[ $sort_field -ge 1 -a "$sort_numeric" ] &&
curitem_mod="${curitem_mod%%[$sort_sep]*}"
# Apply optional trim (-k POS.TRIM) to cut leading characters
curitem_mod="${curitem_mod#$trim}"
# Determine the type of modified comparison to use initially
# NB: Prefer numerical if requested but fallback to standard
case "$curitem_mod" in
""|[!0-9]*) # NULL or begins with non-number
gt=">"
[ "$sort_numeric" ] && curitem_mod=0
;;
*)
if [ "$sort_numeric" ]; then
gt="-gt"
curitem_mod="${curitem_mod%%[!0-9]*}"
# NB: trailing non-digits removed
# otherwise numeric comparison fails
else
gt=">"
fi
esac
# If first time through, short-circuit below position-search
if [ $i -le 1 ]; then
d=0
else
d=1
fi
#
# Find appropriate element position
#
while [ $d -gt 0 ]
do
dest_haskey=$curitem_haskey
eval dest=\"\$dest_$d\"
dest_mod="$dest" # for modified comparison
dest_orig="$dest" # for original comparison
# Trim leading whitespace if desired
if [ "$sort_ignore_leading_space" ]; then
while case "$dest_orig" in
[$IFS]*) : ;; *) false; esac
do
dest_orig="${dest_orig#?}"
done
dest_mod="$dest_orig"
fi
# Shift modified value if sort field (-k POS) is > 1
n=$sort_field
while [ $n -gt 1 ]; do
case "$dest_mod" in
*[$sort_sep]*)
# Cut text up-to (and incl.) 1st sep
dest_mod="${dest_mod#*[$sort_sep]}"
# Skip NULLs unless strict fields
[ "$sort_strict_fields" ] ||
[ "${dest_mod%%[$sort_sep]*}" ] ||
[ $n -eq 2 ] ||
continue
;;
*)
# Asked for a field that doesn't exist
dest_haskey= break
esac
n=$(( $n - 1 ))
done
# Trim trailing words if sort field >= 1
[ $sort_field -ge 1 -a "$sort_numeric" ] &&
dest_mod="${dest_mod%%[$sort_sep]*}"
# Apply optional trim (-k POS.TRIM), cut leading chars
dest_mod="${dest_mod#$trim}"
# Determine type of modified comparison to use
# NB: Prefer numerical if requested, fallback to std
case "$dest_mod" in
""|[!0-9]*) # NULL or begins with non-number
gt=">"
[ "$sort_numeric" ] && dest_mod=0
;;
*)
if [ "$sort_numeric" ]; then
gt="-gt"
dest_mod="${dest_mod%%[!0-9]*}"
# NB: kill trailing non-digits
# for numeric comparison safety
else
gt=">"
fi
esac
# Break if we've found the proper element position
if [ "$curitem_haskey" -a "$dest_haskey" ]; then
if [ "$dest_mod" = "$curitem_mod" ]; then
[ "$dest_orig" ">" "$curitem_orig" ] &&
break
elif [ "$dest_mod" $gt "$curitem_mod" ] \
2> /dev/null
then
break
fi
else
[ "$dest_orig" ">" "$curitem_orig" ] && break
fi
# Break if we've hit the end
[ $d -ge $i ] && break
d=$(( $d + 1 ))
done
# Shift remaining positions forward, making room for new item
n=$i
while [ $n -ge $d ]; do
# Shift destination item forward one placement
eval dest_$(( $n + 1 ))=\"\$dest_$n\"
n=$(( $n - 1 ))
done
# Place the element
if [ $i -eq 1 ]; then
local dest_1="$curitem"
else
local dest_$d="$curitem"
fi
i=$(( $i + 1 ))
done
# Print sorted results
d=1
while [ $d -le $nitems ]; do
eval echo \"\$dest_$d\"
d=$(( $d + 1 ))
done
}
#
# wait_for_pids pid [pid ...]
# spins until none of the pids exist
#
wait_for_pids()
{
local _list _prefix _nlist _j
_list="$@"
if [ -z "$_list" ]; then
return
fi
_prefix=
while true; do
_nlist="";
for _j in $_list; do
if kill -0 $_j 2>/dev/null; then
_nlist="${_nlist}${_nlist:+ }$_j"
[ -n "$_prefix" ] && sleep 1
fi
done
if [ -z "$_nlist" ]; then
break
fi
_list=$_nlist
echo -n ${_prefix:-"Waiting for PIDS: "}$_list
_prefix=", "
pwait $_list 2>/dev/null
done
if [ -n "$_prefix" ]; then
echo "."
fi
}
#
# get_pidfile_from_conf string file
#
# Takes a string to search for in the specified file.
# Ignores lines with traditional comment characters.
#
# Example:
#
# if get_pidfile_from_conf string file; then
# pidfile="$_pidfile_from_conf"
# else
# pidfile='appropriate default'
# fi
#
get_pidfile_from_conf()
{
if [ -z "$1" -o -z "$2" ]; then
err 3 "USAGE: get_pidfile_from_conf string file ($name)"
fi
local string file line
string="$1" ; file="$2"
if [ ! -s "$file" ]; then
err 3 "get_pidfile_from_conf: $file does not exist ($name)"
fi
while read line; do
case "$line" in
*[#\;]*${string}*) continue ;;
*${string}*) break ;;
esac
done < $file
if [ -n "$line" ]; then
line=${line#*/}
_pidfile_from_conf="/${line%%[\"\;]*}"
else
return 1
fi
}
#
# check_startmsgs
# If rc_quiet is set (usually as a result of using faststart at
# boot time) check if rc_startmsgs is enabled.
#
check_startmsgs()
{
if [ -n "$rc_quiet" ]; then
checkyesno rc_startmsgs
else
return 0
fi
}
#
# run_rc_command argument
# Search for argument in the list of supported commands, which is:
# "start stop restart rcvar status poll ${extra_commands}"
# If there's a match, run ${argument}_cmd or the default method
# (see below).
#
# If argument has a given prefix, then change the operation as follows:
# Prefix Operation
# ------ ---------
# fast Skip the pid check, and set rc_fast=yes, rc_quiet=yes
# force Set ${rcvar} to YES, and set rc_force=yes
# one Set ${rcvar} to YES
# quiet Don't output some diagnostics, and set rc_quiet=yes
#
# The following globals are used:
#
# Name Needed Purpose
# ---- ------ -------
# name y Name of script.
#
# command n Full path to command.
# Not needed if ${rc_arg}_cmd is set for
# each keyword.
#
# command_args n Optional args/shell directives for command.
#
# command_interpreter n If not empty, command is interpreted, so
# call check_{pidfile,process}() appropriately.
#
# desc n Description of script.
#
# extra_commands n List of extra commands supported.
#
# pidfile n If set, use check_pidfile $pidfile $command,
# otherwise use check_process $command.
# In either case, only check if $command is set.
#
# procname n Process name to check for instead of $command.
#
# rcvar n This is checked with checkyesno to determine
# if the action should be run.
#
# ${name}_program n Full path to command.
# Meant to be used in /etc/rc.conf to override
# ${command}.
#
# ${name}_chroot n Directory to chroot to before running ${command}
# Requires /usr to be mounted.
#
# ${name}_chdir n Directory to cd to before running ${command}
# (if not using ${name}_chroot).
#
# ${name}_flags n Arguments to call ${command} with.
# NOTE: $flags from the parent environment
# can be used to override this.
#
# ${name}_env n Environment variables to run ${command} with.
#
# ${name}_env_file n File to source variables to run ${command} with.
#
# ${name}_fib n Routing table number to run ${command} with.
#
# ${name}_nice n Nice level to run ${command} at.
#
# ${name}_oomprotect n Don't kill ${command} when swap space is exhausted.
#
# ${name}_user n User to run ${command} as, using su(1) if not
# using ${name}_chroot.
# Requires /usr to be mounted.
#
# ${name}_group n Group to run chrooted ${command} as.
# Requires /usr to be mounted.
#
# ${name}_groups n Comma separated list of supplementary groups
# to run the chrooted ${command} with.
# Requires /usr to be mounted.
#
# ${name}_prepend n Command added before ${command}.
#
# ${name}_login_class n Login class to use, else "daemon".
#
# ${name}_limits n limits(1) to apply to ${command}.
#
# ${rc_arg}_cmd n If set, use this as the method when invoked;
# Otherwise, use default command (see below)
#
# ${rc_arg}_precmd n If set, run just before performing the
# ${rc_arg}_cmd method in the default
# operation (i.e, after checking for required
# bits and process (non)existence).
# If this completes with a non-zero exit code,
# don't run ${rc_arg}_cmd.
#
# ${rc_arg}_postcmd n If set, run just after performing the
# ${rc_arg}_cmd method, if that method
# returned a zero exit code.
#
# required_dirs n If set, check for the existence of the given
# directories before running a (re)start command.
#
# required_files n If set, check for the readability of the given
# files before running a (re)start command.
#
# required_modules n If set, ensure the given kernel modules are
# loaded before running a (re)start command.
# The check and possible loads are actually
# done after start_precmd so that the modules
# aren't loaded in vain, should the precmd
# return a non-zero status to indicate a error.
# If a word in the list looks like "foo:bar",
# "foo" is the KLD file name and "bar" is the
# module name. If a word looks like "foo~bar",
# "foo" is the KLD file name and "bar" is a
# egrep(1) pattern matching the module name.
# Otherwise the module name is assumed to be
# the same as the KLD file name, which is most
# common. See load_kld().
#
# required_vars n If set, perform checkyesno on each of the
# listed variables before running the default
# (re)start command.
#
# Default behaviour for a given argument, if no override method is
# provided:
#
# Argument Default behaviour
# -------- -----------------
# start if !running && checkyesno ${rcvar}
# ${command}
#
# stop if ${pidfile}
# rc_pid=$(check_pidfile $pidfile $command)
# else
# rc_pid=$(check_process $command)
# kill $sig_stop $rc_pid
# wait_for_pids $rc_pid
# ($sig_stop defaults to TERM.)
#
# reload Similar to stop, except use $sig_reload instead,
# and doesn't wait_for_pids.
# $sig_reload defaults to HUP.
# Note that `reload' isn't provided by default,
# it should be enabled via $extra_commands.
#
# restart Run `stop' then `start'.
#
# status Show if ${command} is running, etc.
#
# poll Wait for ${command} to exit.
#
# rcvar Display what rc.conf variable is used (if any).
#
# enabled Return true if the service is enabled.
#
# describe Show the service's description
#
# extracommands Show the service's extra commands
#
# Variables available to methods, and after run_rc_command() has
# completed:
#
# Variable Purpose
# -------- -------
# rc_arg Argument to command, after fast/force/one processing
# performed
#
# rc_flags Flags to start the default command with.
# Defaults to ${name}_flags, unless overridden
# by $flags from the environment.
# This variable may be changed by the precmd method.
#
# rc_service Path to the service being executed, in case the service
# needs to re-invoke itself.
#
# rc_pid PID of command (if appropriate)
#
# rc_fast Not empty if "fast" was provided (q.v.)
#
# rc_force Not empty if "force" was provided (q.v.)
#
# rc_quiet Not empty if "quiet" was provided
#
#
run_rc_command()
{
_return=0
rc_arg=$1
if [ -z "$name" ]; then
err 3 'run_rc_command: $name is not set.'
fi
# Don't repeat the first argument when passing additional command-
# line arguments to the command subroutines.
#
shift 1
rc_extra_args="$*"
_rc_prefix=
case "$rc_arg" in
fast*) # "fast" prefix; don't check pid
rc_arg=${rc_arg#fast}
rc_fast=yes
rc_quiet=yes
;;
force*) # "force" prefix; always run
rc_force=yes
_rc_prefix=force
rc_arg=${rc_arg#${_rc_prefix}}
if [ -n "${rcvar}" ]; then
eval ${rcvar}=YES
fi
;;
one*) # "one" prefix; set ${rcvar}=yes
_rc_prefix=one
rc_arg=${rc_arg#${_rc_prefix}}
if [ -n "${rcvar}" ]; then
eval ${rcvar}=YES
fi
;;
quiet*) # "quiet" prefix; omit some messages
_rc_prefix=quiet
rc_arg=${rc_arg#${_rc_prefix}}
rc_quiet=yes
;;
esac
eval _override_command=\$${name}_program
command=${_override_command:-$command}
_keywords="start stop restart rcvar enable disable delete enabled describe extracommands $extra_commands"
rc_pid=
_pidcmd=
_procname=${procname:-${command}}
# setup pid check command
if [ -n "$_procname" ]; then
if [ -n "$pidfile" ]; then
_pidcmd='rc_pid=$(check_pidfile '"$pidfile $_procname $command_interpreter"')'
else
_pidcmd='rc_pid=$(check_process '"$_procname $command_interpreter"')'
fi
_keywords="${_keywords} status poll"
fi
if [ -z "$rc_arg" ]; then
rc_usage $_keywords
fi
if [ "$rc_arg" = "enabled" ] ; then
checkyesno ${rcvar}
return $?
fi
if [ -n "$flags" ]; then # allow override from environment
rc_flags=$flags
else
eval rc_flags=\$${name}_flags
fi
eval _chdir=\$${name}_chdir _chroot=\$${name}_chroot \
_nice=\$${name}_nice _user=\$${name}_user \
_group=\$${name}_group _groups=\$${name}_groups \
_fib=\$${name}_fib _env=\$${name}_env \
_prepend=\$${name}_prepend _login_class=\${${name}_login_class:-daemon} \
_limits=\$${name}_limits _oomprotect=\$${name}_oomprotect \
_env_file=\$${name}_env_file
if [ -n "$_env_file" ] && [ -r "${_env_file}" ]; then # load env from file
set -a
. $_env_file
set +a
fi
if [ -n "$_user" ]; then # unset $_user if running as that user
if [ "$_user" = "$(eval $IDCMD)" ]; then
unset _user
fi
fi
[ -z "$autoboot" ] && eval $_pidcmd # determine the pid if necessary
for _elem in $_keywords; do
if [ "$_elem" != "$rc_arg" ]; then
continue
fi
# if ${rcvar} is set, $1 is not "rcvar", "describe",
# "enable" or "delete", and ${rc_pid} is not set, run:
# checkyesno ${rcvar}
# and return if that failed
#
if [ -n "${rcvar}" -a "$rc_arg" != "rcvar" -a "$rc_arg" != "stop" \
-a "$rc_arg" != "delete" -a "$rc_arg" != "enable" \
-a "$rc_arg" != "describe" ] ||
[ -n "${rcvar}" -a "$rc_arg" = "stop" -a -z "${rc_pid}" ]; then
if ! checkyesno ${rcvar}; then
if [ -n "${rc_quiet}" ]; then
return 0
fi
echo -n "Cannot '${rc_arg}' $name. Set ${rcvar} to "
echo -n "YES in /etc/rc.conf or use 'one${rc_arg}' "
echo "instead of '${rc_arg}'."
return 0
fi
fi
if [ $rc_arg = "start" -a -z "$rc_fast" -a -n "$rc_pid" ]; then
if [ -z "$rc_quiet" ]; then
echo 1>&2 "${name} already running? " \
"(pid=$rc_pid)."
fi
return 1
fi
# if there's a custom ${XXX_cmd},
# run that instead of the default
#
eval _cmd=\$${rc_arg}_cmd \
_precmd=\$${rc_arg}_precmd \
_postcmd=\$${rc_arg}_postcmd
if [ -n "$_cmd" ]; then
_run_rc_precmd || return 1
_run_rc_doit "$_cmd $rc_extra_args" || return 1
_run_rc_postcmd
return $_return
fi
case "$rc_arg" in # default operations...
describe)
if [ -n "$desc" ]; then
echo "$desc"
fi
;;
extracommands)
echo "$extra_commands"
;;
enable)
_out=$(/usr/sbin/sysrc -vs "$name" "$rcvar=YES") &&
echo "$name enabled in ${_out%%:*}"
;;
disable)
_out=$(/usr/sbin/sysrc -vs "$name" "$rcvar=NO") &&
echo "$name disabled in ${_out%%:*}"
;;
delete)
_files=
for _file in $(sysrc -lEs "$name"); do
_out=$(sysrc -Fif $_file "$rcvar") && _files="$_files $_file"
done
/usr/sbin/sysrc -x "$rcvar" && echo "$rcvar deleted in ${_files# }"
# delete file in rc.conf.d if desired and empty.
checkyesno service_delete_empty || _files=
for _file in $_files; do
[ "$_file" = "${_file#*/rc.conf.d/}" ] && continue
[ $(/usr/bin/stat -f%z $_file) -gt 0 ] && continue
/bin/rm "$_file" && echo "Empty file $_file removed"
done
;;
status)
_run_rc_precmd || return 1
if [ -n "$rc_pid" ]; then
echo "${name} is running as pid $rc_pid."
else
echo "${name} is not running."
return 1
fi
_run_rc_postcmd
;;
start)
if [ ! -x "${_chroot}${_chroot:+/}${command}" ]; then
warn "run_rc_command: cannot run $command"
return 1
fi
if ! _run_rc_precmd; then
warn "failed precmd routine for ${name}"
return 1
fi
# setup the full command to run
#
check_startmsgs && echo "Starting ${name}."
if [ -n "$_chroot" ]; then
_cd=
_doit="\
${_nice:+nice -n $_nice }\
${_fib:+setfib -F $_fib }\
${_env:+env $_env }\
chroot ${_user:+-u $_user }${_group:+-g $_group }${_groups:+-G $_groups }\
$_chroot $command $rc_flags $command_args"
else
_cd="${_chdir:+cd $_chdir && }"
_doit="\
${_fib:+setfib -F $_fib }\
${_env:+env $_env }\
$command $rc_flags $command_args"
if [ -n "$_user" ]; then
_doit="su -m $_user -c 'sh -c \"$_doit\"'"
fi
if [ -n "$_nice" ]; then
if [ -z "$_user" ]; then
_doit="sh -c \"$_doit\""
fi
_doit="nice -n $_nice $_doit"
fi
if [ -n "$_prepend" ]; then
_doit="$_prepend $_doit"
fi
fi
# Prepend default limits
_doit="$_cd limits -C $_login_class $_limits $_doit"
# run the full command
#
if ! _run_rc_doit "$_doit"; then
warn "failed to start ${name}"
return 1
fi
# finally, run postcmd
#
_run_rc_postcmd
;;
stop)
if [ -z "$rc_pid" ]; then
[ -n "$rc_fast" ] && return 0
_run_rc_notrunning
return 1
fi
_run_rc_precmd || return 1
# send the signal to stop
#
echo "Stopping ${name}."
_doit=$(_run_rc_killcmd "${sig_stop:-TERM}")
_run_rc_doit "$_doit" || return 1
# wait for the command to exit,
# and run postcmd.
wait_for_pids $rc_pid
_run_rc_postcmd
;;
reload)
if [ -z "$rc_pid" ]; then
_run_rc_notrunning
return 1
fi
_run_rc_precmd || return 1
_doit=$(_run_rc_killcmd "${sig_reload:-HUP}")
_run_rc_doit "$_doit" || return 1
_run_rc_postcmd
;;
restart)
# prevent restart being called more
# than once by any given script
#
if ${_rc_restart_done:-false}; then
return 0
fi
_rc_restart_done=true
_run_rc_precmd || return 1
# run those in a subshell to keep global variables
( run_rc_command ${_rc_prefix}stop $rc_extra_args )
( run_rc_command ${_rc_prefix}start $rc_extra_args )
_return=$?
[ $_return -ne 0 ] && [ -z "$rc_force" ] && return 1
_run_rc_postcmd
;;
poll)
_run_rc_precmd || return 1
if [ -n "$rc_pid" ]; then
wait_for_pids $rc_pid
fi
_run_rc_postcmd
;;
rcvar)
echo -n "# $name"
if [ -n "$desc" ]; then
echo " : $desc"
else
echo ""
fi
echo "#"
# Get unique vars in $rcvar $rcvars
for _v in $rcvar $rcvars; do
case $v in
$_v\ *|\ *$_v|*\ $_v\ *) ;;
*) v="${v# } $_v" ;;
esac
done
# Display variables.
for _v in $v; do
if [ -z "$_v" ]; then
continue
fi
eval _desc=\$${_v}_desc
eval _defval=\$${_v}_defval
_h="-"
eval echo \"$_v=\\\"\$$_v\\\"\"
# decode multiple lines of _desc
while [ -n "$_desc" ]; do
case $_desc in
*^^*)
echo "# $_h ${_desc%%^^*}"
_desc=${_desc#*^^}
_h=" "
;;
*)
echo "# $_h ${_desc}"
break
;;
esac
done
echo "# (default: \"$_defval\")"
done
echo ""
;;
*)
rc_usage $_keywords
;;
esac
# Apply protect(1) to the PID if ${name}_oomprotect is set.
case "$rc_arg" in
start)
# We cannot use protect(1) inside jails.
if [ -n "$_oomprotect" ] && [ -f "${PROTECT}" ] &&
[ "$(sysctl -n security.jail.jailed)" -eq 0 ]; then
pid=$(check_process $command)
case $_oomprotect in
[Aa][Ll][Ll])
${PROTECT} -i -p ${pid}
;;
[Yy][Ee][Ss])
${PROTECT} -p ${pid}
;;
esac
fi
;;
esac
return $_return
done
echo 1>&2 "$0: unknown directive '$rc_arg'."
rc_usage $_keywords
# not reached
}
#
# Helper functions for run_rc_command: common code.
# They use such global variables besides the exported rc_* ones:
#
# name R/W
# ------------------
# _precmd R
# _postcmd R
# _return W
#
_run_rc_precmd()
{
check_required_before "$rc_arg" || return 1
if [ -n "$_precmd" ]; then
debug "run_rc_command: ${rc_arg}_precmd: $_precmd $rc_extra_args"
eval "$_precmd $rc_extra_args"
_return=$?
# If precmd failed and force isn't set, request exit.
if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then
return 1
fi
fi
check_required_after "$rc_arg" || return 1
return 0
}
_run_rc_postcmd()
{
if [ -n "$_postcmd" ]; then
debug "run_rc_command: ${rc_arg}_postcmd: $_postcmd $rc_extra_args"
eval "$_postcmd $rc_extra_args"
_return=$?
fi
return 0
}
_run_rc_doit()
{
debug "run_rc_command: doit: $*"
eval "$@"
_return=$?
# If command failed and force isn't set, request exit.
if [ $_return -ne 0 ] && [ -z "$rc_force" ]; then
return 1
fi
return 0
}
_run_rc_notrunning()
{
local _pidmsg
if [ -n "$pidfile" ]; then
_pidmsg=" (check $pidfile)."
else
_pidmsg=
fi
echo 1>&2 "${name} not running?${_pidmsg}"
}
_run_rc_killcmd()
{
local _cmd
_cmd="kill -$1 $rc_pid"
if [ -n "$_user" ]; then
_cmd="su -m ${_user} -c 'sh -c \"${_cmd}\"'"
fi
echo "$_cmd"
}
#
# run_rc_script file arg
# Start the script `file' with `arg', and correctly handle the
# return value from the script.
# If `file' ends with `.sh' and lives in /etc/rc.d, ignore it as it's
# an old-style startup file.
# If `file' ends with `.sh' and does not live in /etc/rc.d, it's sourced
# into the current environment if $rc_fast_and_loose is set; otherwise
# it is run as a child process.
# If `file' appears to be a backup or scratch file, ignore it.
# Otherwise if it is executable run as a child process.
#
run_rc_script()
{
_file=$1
_arg=$2
if [ -z "$_file" -o -z "$_arg" ]; then
err 3 'USAGE: run_rc_script file arg'
fi
unset name command command_args command_interpreter \
extra_commands pidfile procname \
rcvar rcvars rcvars_obsolete required_dirs required_files \
required_vars
eval unset ${_arg}_cmd ${_arg}_precmd ${_arg}_postcmd
rc_service="$_file"
case "$_file" in
/etc/rc.d/*.sh) # no longer allowed in the base
warn "Ignoring old-style startup script $_file"
;;
*[~#]|*.OLD|*.bak|*.orig|*,v) # scratch file; skip
warn "Ignoring scratch file $_file"
;;
*) # run in subshell
if [ -x $_file ]; then
if [ -n "$rc_fast_and_loose" ]; then
set $_arg; . $_file
else
( trap "echo Script $_file interrupted >&2 ; kill -QUIT $$" 3
trap "echo Script $_file interrupted >&2 ; exit 1" 2
trap "echo Script $_file running >&2" 29
set $_arg; . $_file )
fi
fi
;;
esac
}
#
# load_rc_config [service]
# Source in the configuration file(s) for a given service.
# If no service is specified, only the global configuration
# file(s) will be loaded.
#
load_rc_config()
{
local _name _rcvar_val _var _defval _v _msg _new _d
_name=$1
if ${_rc_conf_loaded:-false}; then
:
else
if [ -r /etc/defaults/rc.conf ]; then
debug "Sourcing /etc/defaults/rc.conf"
. /etc/defaults/rc.conf
source_rc_confs
elif [ -r /etc/rc.conf ]; then
debug "Sourcing /etc/rc.conf (/etc/defaults/rc.conf doesn't exist)."
. /etc/rc.conf
fi
_rc_conf_loaded=true
fi
# If a service name was specified, attempt to load
# service-specific configuration
if [ -n "$_name" ] ; then
for _d in /etc ${local_startup}; do
_d=${_d%/rc.d}
if [ -f ${_d}/rc.conf.d/"$_name" ]; then
debug "Sourcing ${_d}/rc.conf.d/$_name"
. ${_d}/rc.conf.d/"$_name"
elif [ -d ${_d}/rc.conf.d/"$_name" ] ; then
local _rc
for _rc in ${_d}/rc.conf.d/"$_name"/* ; do
if [ -f "$_rc" ] ; then
debug "Sourcing $_rc"
. "$_rc"
fi
done
fi
done
fi
# Set defaults if defined.
for _var in $rcvar $rcvars; do
eval _defval=\$${_var}_defval
if [ -n "$_defval" ]; then
eval : \${$_var:=\$${_var}_defval}
fi
done
# check obsolete rc.conf variables
for _var in $rcvars_obsolete; do
eval _v=\$$_var
eval _msg=\$${_var}_obsolete_msg
eval _new=\$${_var}_newvar
case $_v in
"")
;;
*)
if [ -z "$_new" ]; then
_msg="Ignored."
else
eval $_new=\"\$$_var\"
if [ -z "$_msg" ]; then
_msg="Use \$$_new instead."
fi
fi
warn "\$$_var is obsolete. $_msg"
;;
esac
done
}
#
# load_rc_config_var name var
# Read the rc.conf(5) var for name and set in the
# current shell, using load_rc_config in a subshell to prevent
# unwanted side effects from other variable assignments.
#
load_rc_config_var()
{
if [ $# -ne 2 ]; then
err 3 'USAGE: load_rc_config_var name var'
fi
eval $(eval '(
load_rc_config '$1' >/dev/null;
if [ -n "${'$2'}" -o "${'$2'-UNSET}" != "UNSET" ]; then
echo '$2'=\'\''${'$2'}\'\'';
fi
)' )
}
#
# rc_usage commands
# Print a usage string for $0, with `commands' being a list of
# valid commands.
#
rc_usage()
{
echo -n 1>&2 "Usage: $0 [fast|force|one|quiet]("
_sep=
for _elem; do
echo -n 1>&2 "$_sep$_elem"
_sep="|"
done
echo 1>&2 ")"
exit 1
}
#
# err exitval message
# Display message to stderr and log to the syslog, and exit with exitval.
#
err()
{
exitval=$1
shift
if [ -x /usr/bin/logger ]; then
logger "$0: ERROR: $*"
fi
echo 1>&2 "$0: ERROR: $*"
exit $exitval
}
#
# warn message
# Display message to stderr and log to the syslog.
#
warn()
{
if [ -x /usr/bin/logger ]; then
logger "$0: WARNING: $*"
fi
echo 1>&2 "$0: WARNING: $*"
}
#
# info message
# Display informational message to stdout and log to syslog.
#
info()
{
case ${rc_info} in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
if [ -x /usr/bin/logger ]; then
logger "$0: INFO: $*"
fi
echo "$0: INFO: $*"
;;
esac
}
#
# debug message
# If debugging is enabled in rc.conf output message to stderr.
# BEWARE that you don't call any subroutine that itself calls this
# function.
#
debug()
{
case ${rc_debug} in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
if [ -x /usr/bin/logger ]; then
logger "$0: DEBUG: $*"
fi
echo 1>&2 "$0: DEBUG: $*"
;;
esac
}
#
# backup_file action file cur backup
# Make a backup copy of `file' into `cur', and save the previous
# version of `cur' as `backup'.
#
# The `action' keyword can be one of the following:
#
# add `file' is now being backed up (and is possibly
# being reentered into the backups system). `cur'
# is created.
#
# update `file' has changed and needs to be backed up.
# If `cur' exists, it is copied to `back'
# and then `file' is copied to `cur'.
#
# remove `file' is no longer being tracked by the backups
# system. `cur' is moved `back'.
#
#
backup_file()
{
_action=$1
_file=$2
_cur=$3
_back=$4
case $_action in
add|update)
if [ -f $_cur ]; then
cp -p $_cur $_back
fi
cp -p $_file $_cur
chown root:wheel $_cur
;;
remove)
mv -f $_cur $_back
;;
esac
}
# make_symlink src link
# Make a symbolic link 'link' to src from basedir. If the
# directory in which link is to be created does not exist
# a warning will be displayed and an error will be returned.
# Returns 0 on success, 1 otherwise.
#
make_symlink()
{
local src link linkdir _me
src="$1"
link="$2"
linkdir="`dirname $link`"
_me="make_symlink()"
if [ -z "$src" -o -z "$link" ]; then
warn "$_me: requires two arguments."
return 1
fi
if [ ! -d "$linkdir" ]; then
warn "$_me: the directory $linkdir does not exist."
return 1
fi
if ! ln -sf $src $link; then
warn "$_me: unable to make a symbolic link from $link to $src"
return 1
fi
return 0
}
# devfs_rulesets_from_file file
# Reads a set of devfs commands from file, and creates
# the specified rulesets with their rules. Returns non-zero
# if there was an error.
#
devfs_rulesets_from_file()
{
local file _err _me _opts
file="$1"
_me="devfs_rulesets_from_file"
_err=0
if [ -z "$file" ]; then
warn "$_me: you must specify a file"
return 1
fi
if [ ! -e "$file" ]; then
debug "$_me: no such file ($file)"
return 0
fi
# Disable globbing so that the rule patterns are not expanded
# by accident with matching filesystem entries.
_opts=$-; set -f
debug "reading rulesets from file ($file)"
{ while read line
do
case $line in
\#*)
continue
;;
\[*\]*)
rulenum=`expr "$line" : "\[.*=\([0-9]*\)\]"`
if [ -z "$rulenum" ]; then
warn "$_me: cannot extract rule number ($line)"
_err=1
break
fi
rulename=`expr "$line" : "\[\(.*\)=[0-9]*\]"`
if [ -z "$rulename" ]; then
warn "$_me: cannot extract rule name ($line)"
_err=1
break;
fi
eval $rulename=\$rulenum
debug "found ruleset: $rulename=$rulenum"
if ! /sbin/devfs rule -s $rulenum delset; then
_err=1
break
fi
;;
*)
rulecmd="${line%%"\#*"}"
# evaluate the command incase it includes
# other rules
if [ -n "$rulecmd" ]; then
debug "adding rule ($rulecmd)"
if ! eval /sbin/devfs rule -s $rulenum $rulecmd
then
_err=1
break
fi
fi
;;
esac
if [ $_err -ne 0 ]; then
debug "error in $_me"
break
fi
done } < $file
case $_opts in *f*) ;; *) set +f ;; esac
return $_err
}
# devfs_init_rulesets
# Initializes rulesets from configuration files. Returns
# non-zero if there was an error.
#
devfs_init_rulesets()
{
local file _me
_me="devfs_init_rulesets"
# Go through this only once
if [ -n "$devfs_rulesets_init" ]; then
debug "$_me: devfs rulesets already initialized"
return
fi
for file in $devfs_rulesets; do
if ! devfs_rulesets_from_file $file; then
warn "$_me: could not read rules from $file"
return 1
fi
done
devfs_rulesets_init=1
debug "$_me: devfs rulesets initialized"
return 0
}
# devfs_set_ruleset ruleset [dir]
# Sets the default ruleset of dir to ruleset. The ruleset argument
# must be a ruleset name as specified in devfs.rules(5) file.
# Returns non-zero if it could not set it successfully.
#
devfs_set_ruleset()
{
local devdir rs _me
[ -n "$1" ] && eval rs=\$$1 || rs=
[ -n "$2" ] && devdir="-m "$2"" || devdir=
_me="devfs_set_ruleset"
if [ -z "$rs" ]; then
warn "$_me: you must specify a ruleset number"
return 1
fi
debug "$_me: setting ruleset ($rs) on mount-point (${devdir#-m })"
if ! /sbin/devfs $devdir ruleset $rs; then
warn "$_me: unable to set ruleset $rs to ${devdir#-m }"
return 1
fi
return 0
}
# devfs_apply_ruleset ruleset [dir]
# Apply ruleset number $ruleset to the devfs mountpoint $dir.
# The ruleset argument must be a ruleset name as specified
# in a devfs.rules(5) file. Returns 0 on success or non-zero
# if it could not apply the ruleset.
#
devfs_apply_ruleset()
{
local devdir rs _me
[ -n "$1" ] && eval rs=\$$1 || rs=
[ -n "$2" ] && devdir="-m "$2"" || devdir=
_me="devfs_apply_ruleset"
if [ -z "$rs" ]; then
warn "$_me: you must specify a ruleset"
return 1
fi
debug "$_me: applying ruleset ($rs) to mount-point (${devdir#-m })"
if ! /sbin/devfs $devdir rule -s $rs applyset; then
warn "$_me: unable to apply ruleset $rs to ${devdir#-m }"
return 1
fi
return 0
}
# devfs_domount dir [ruleset]
# Mount devfs on dir. If ruleset is specified it is set
# on the mount-point. It must also be a ruleset name as specified
# in a devfs.rules(5) file. Returns 0 on success.
#
devfs_domount()
{
local devdir rs _me
devdir="$1"
[ -n "$2" ] && rs=$2 || rs=
_me="devfs_domount()"
if [ -z "$devdir" ]; then
warn "$_me: you must specify a mount-point"
return 1
fi
debug "$_me: mount-point is ($devdir), ruleset is ($rs)"
if ! mount -t devfs dev "$devdir"; then
warn "$_me: Unable to mount devfs on $devdir"
return 1
fi
if [ -n "$rs" ]; then
devfs_init_rulesets
devfs_set_ruleset $rs $devdir
devfs -m $devdir rule applyset
fi
return 0
}
# Provide a function for normalizing the mounting of memory
# filesystems. This should allow the rest of the code here to remain
# as close as possible between 5-current and 4-stable.
# $1 = size
# $2 = mount point
# $3 = (optional) extra mdmfs flags
mount_md()
{
if [ -n "$3" ]; then
flags="$3"
fi
/sbin/mdmfs $flags -s $1 ${mfs_type} $2
}
# Code common to scripts that need to load a kernel module
# if it isn't in the kernel yet. Syntax:
# load_kld [-e regex] [-m module] file
# where -e or -m chooses the way to check if the module
# is already loaded:
# regex is egrep'd in the output from `kldstat -v',
# module is passed to `kldstat -m'.
# The default way is as though `-m file' were specified.
load_kld()
{
local _loaded _mod _opt _re
while getopts "e:m:" _opt; do
case "$_opt" in
e) _re="$OPTARG" ;;
m) _mod="$OPTARG" ;;
*) err 3 'USAGE: load_kld [-e regex] [-m module] file' ;;
esac
done
shift $(($OPTIND - 1))
if [ $# -ne 1 ]; then
err 3 'USAGE: load_kld [-e regex] [-m module] file'
fi
_mod=${_mod:-$1}
_loaded=false
if [ -n "$_re" ]; then
if kldstat -v | egrep -q -e "$_re"; then
_loaded=true
fi
else
if kldstat -q -m "$_mod"; then
_loaded=true
fi
fi
if ! $_loaded; then
if ! kldload "$1"; then
warn "Unable to load kernel module $1"
return 1
else
info "$1 kernel module loaded."
fi
else
debug "load_kld: $1 kernel module already loaded."
fi
return 0
}
# ltr str src dst [var]
# Change every $src in $str to $dst.
# Useful when /usr is not yet mounted and we cannot use tr(1), sed(1) nor
# awk(1). If var is non-NULL, set it to the result.
ltr()
{
local _str _src _dst _out _com _var
_str="$1"
_src="$2"
_dst="$3"
_var="$4"
_out=""
local IFS="${_src}"
for _com in ${_str}; do
if [ -z "${_out}" ]; then
_out="${_com}"
else
_out="${_out}${_dst}${_com}"
fi
done
if [ -n "${_var}" ]; then
setvar "${_var}" "${_out}"
else
echo "${_out}"
fi
}
# Creates a list of providers for GELI encryption.
geli_make_list()
{
local devices devices2
local provider mountpoint type options rest
# Create list of GELI providers from fstab.
while read provider mountpoint type options rest ; do
case ":${options}" in
:*noauto*)
noauto=yes
;;
*)
noauto=no
;;
esac
case ":${provider}" in
:#*)
continue
;;
*.eli)
# Skip swap devices.
if [ "${type}" = "swap" -o "${options}" = "sw" -o "${noauto}" = "yes" ]; then
continue
fi
devices="${devices} ${provider}"
;;
esac
done < /etc/fstab
# Append providers from geli_devices.
devices="${devices} ${geli_devices}"
for provider in ${devices}; do
provider=${provider%.eli}
provider=${provider#/dev/}
devices2="${devices2} ${provider}"
done
echo ${devices2}
}
# Originally, root mount hold had to be released before mounting
# the root filesystem. This delayed the boot, so it was changed
# to only wait if the root device isn't readily available. This
# can result in rc scripts executing before all the devices - such
# as graid(8), or USB disks - can be accessed. This function can
# be used to explicitly wait for root mount holds to be released.
root_hold_wait()
{
local wait waited holders
waited=0
while true; do
holders="$(sysctl -n vfs.root_mount_hold)"
if [ -z "${holders}" ]; then
break;
fi
if [ ${waited} -eq 0 ]; then
echo -n "Waiting ${root_hold_delay}s" \
"for the root mount holders: ${holders}"
else
echo -n .
fi
if [ ${waited} -ge ${root_hold_delay} ]; then
echo
break
fi
sleep 1
waited=$(($waited + 1))
done
}
# Find scripts in local_startup directories that use the old syntax
#
find_local_scripts_old() {
zlist=''
slist=''
for dir in ${local_startup}; do
if [ -d "${dir}" ]; then
for file in ${dir}/[0-9]*.sh; do
grep '^# PROVIDE:' $file >/dev/null 2>&1 &&
continue
zlist="$zlist $file"
done
for file in ${dir}/[!0-9]*.sh; do
grep '^# PROVIDE:' $file >/dev/null 2>&1 &&
continue
slist="$slist $file"
done
fi
done
}
find_local_scripts_new() {
local_rc=''
for dir in ${local_startup}; do
if [ -d "${dir}" ]; then
for file in `grep -l '^# PROVIDE:' ${dir}/* 2>/dev/null`; do
case "$file" in
*.sample) ;;
*) if [ -x "$file" ]; then
local_rc="${local_rc} ${file}"
fi
;;
esac
done
fi
done
}
# check_required_{before|after} command
# Check for things required by the command before and after its precmd,
# respectively. The two separate functions are needed because some
# conditions should prevent precmd from being run while other things
# depend on precmd having already been run.
#
check_required_before()
{
local _f
case "$1" in
start)
for _f in $required_vars; do
if ! checkyesno $_f; then
warn "\$${_f} is not enabled."
if [ -z "$rc_force" ]; then
return 1
fi
fi
done
for _f in $required_dirs; do
if [ ! -d "${_f}/." ]; then
warn "${_f} is not a directory."
if [ -z "$rc_force" ]; then
return 1
fi
fi
done
for _f in $required_files; do
if [ ! -r "${_f}" ]; then
warn "${_f} is not readable."
if [ -z "$rc_force" ]; then
return 1
fi
fi
done
;;
esac
return 0
}
check_required_after()
{
local _f _args
case "$1" in
start)
for _f in $required_modules; do
case "${_f}" in
*~*) _args="-e ${_f#*~} ${_f%%~*}" ;;
*:*) _args="-m ${_f#*:} ${_f%%:*}" ;;
*) _args="${_f}" ;;
esac
if ! load_kld ${_args}; then
if [ -z "$rc_force" ]; then
return 1
fi
fi
done
;;
esac
return 0
}
# check_jail mib
# Return true if security.jail.$mib exists and set to 1.
check_jail()
{
local _mib _v
_mib=$1
if _v=$(${SYSCTL_N} "security.jail.$_mib" 2> /dev/null); then
case $_v in
1) return 0;;
esac
fi
return 1
}
# check_kern_features mib
# Return existence of kern.features.* sysctl MIB as true or
# false. The result will be cached in $_rc_cache_kern_features_
# namespace. "0" means the kern.features.X exists.
check_kern_features()
{
local _v
[ -n "$1" ] || return 1;
eval _v=\$_rc_cache_kern_features_$1
[ -n "$_v" ] && return "$_v";
if ${SYSCTL_N} kern.features.$1 > /dev/null 2>&1; then
eval _rc_cache_kern_features_$1=0
return 0
else
eval _rc_cache_kern_features_$1=1
return 1
fi
}
# check_namevarlist var
# Return "0" if ${name}_var is reserved in rc.subr.
_rc_namevarlist="program chroot chdir env flags fib nice user group groups prepend"
check_namevarlist()
{
local _v
for _v in $_rc_namevarlist; do
case $1 in
$_v) return 0 ;;
esac
done
return 1
}
# _echoonce var msg mode
# mode=0: Echo $msg if ${$var} is empty.
# After doing echo, a string is set to ${$var}.
#
# mode=1: Echo $msg if ${$var} is a string with non-zero length.
#
_echoonce()
{
local _var _msg _mode
eval _var=\$$1
_msg=$2
_mode=$3
case $_mode in
1) [ -n "$_var" ] && echo "$_msg" ;;
*) [ -z "$_var" ] && echo -n "$_msg" && eval "$1=finished" ;;
esac
}
# If the loader env variable rc.debug is set, turn on debugging. rc.conf will
# still override this, but /etc/defaults/rc.conf can't unconditionally set this
# since it would undo what we've done here.
if kenv -q rc.debug > /dev/null ; then
rc_debug=YES
fi
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