Plan 9 from Bell Labs’s /usr/web/sources/plan9/rc/bin/cpurc

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
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#!/bin/rc
# cpu server start up
date > /env/boottime

# mount points
mntgen -s slashn && chmod 666 /srv/slashn

# name translation, cs sets /dev/sysname
ndb/cs
sysname=`{cat /dev/sysname}

# parallelism for mk
NPROC = `{wc -l </dev/sysstat}

# site-specific startup
if(test -e /rc/bin/cpurc.local)
	. /rc/bin/cpurc.local

if (~ $#sysname 0 || ~ $sysname '') {
	sysname = helix			# default
	echo -n $sysname >/dev/sysname
}
prompt=($sysname^'# ' '	')

# cpu-specific startup
if(test -e /cfg/$sysname/cpurc)
	. /cfg/$sysname/cpurc

# start up internet if we don't already have an address
if(! grep u /net/ipselftab | grep -sv 127.0.0.1)
	ip/ipconfig
if(! grep -s 127.0.0.1 /net/ipselftab)
	ip/ipconfig loopback /dev/null 127.1

# if we're not a server, start a dns resolver
if(! test -e /srv/dns)
	ndb/dns -r

# If you are on an auth server, start these before listening:
#
# auth/keyfs -wp -m /mnt/keys /adm/keys >/dev/null >[2=1]
# auth/cron >>/sys/log/cron >[2=1] &

# keep other bootes processes from creating capabilities
rm -f '#¤/caphash'

# also rename some files on an auth server:
#
# if(! test -e /rc/bin/service.auth/tcp567){
#	mv /rc/bin/service.auth/authsrv.il566 /rc/bin/service.auth/il566
#	mv /rc/bin/service.auth/authsrv.tcp567 /rc/bin/service.auth/tcp567
#	mv /rc/bin/service/il566 /rc/bin/service/_il566
#	mv /rc/bin/service/tcp567 /rc/bin/service/_tcp567
# }

# netssh

# start listeners if it hasn't already been done (dicey check)
if(! netstat -n | grep -s 'tcp.*Listen.* (7|9|21|22|23|25|110|113|565|993|17007|17009|17010) .*')
	aux/listen -q tcp
# we don't use IL, maybe you do
if(! netstat -n | grep -v 17008 | grep -s il.*Listen)
	aux/listen -q il

if(! ps|grep -s timesync) {
	aux/timesync -n pool.ntp.org
	if (test -e '#r/rtc') @ {
		sleep 10			# let timesync correct the time
		awk '{print $1}' /dev/time >'#r/rtc'	# fix hw clock
	} &
}

# cpu-specific late startup
if(test -e /cfg/$sysname/cpustart)
	. /cfg/$sysname/cpustart

# mode of /proc/*/ctl is inherited across rfork, and sets modes on
# other /proc files, such as note, so let listen be killed.
dontkill '^(ipconfig|factotum|mntgen|venti|fossil|cs|dns|reboot)$'

# echo `{date} $sysname >>/sys/log/boot
exit ''

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