adding example runit-style service directory

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2009-11-06 04:04:19 +01:00
parent 85bb843f47
commit 6cf7f01256
20 changed files with 613 additions and 0 deletions

View File

@@ -0,0 +1,53 @@
#!/bin/sh
# convert:
# dhcptype=5
# serverid=172.16.42.102
# lease=97200
# interface=eth0
# ip=172.16.42.177
# subnet=255.255.255.0
# mask=24
# broadcast=172.16.22.255
# router=172.16.42.98
# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
# domain=lab.example.com example.com
# ntpsrv=10.34.32.125 10.34.255.7
# into:
#let cfg=cfg+1
#if[$cfg]=...; ip[$cfg]=...; ipmask[$cfg]=.../...; gw[$cfg]=...; net[$cfg]=... dns[$cfg]=...
exec >"$0.out" 2>&1
test "$interface" || exit 1
test -f "$1" || exit 1
# Unsafe, and does not handle values with spaces:
#. "./$1" || exit 1
# Safe(r) parsing:
sq="'"
while read line; do
#echo "line: $line"
# Skip empty lines and lines with single quotes
test "${line##*$sq*}" || continue
var="${line%%=*}"
val="${line#*=}"
#echo "var:$var val:'$val'"
eval "$var='$val'"
done <"$1"
{
echo "let cfg=cfg+1"
test "$interface" && echo "if[\$cfg]='$interface'"
test "$ip" && echo "ip[\$cfg]='$ip'"
test "$ip" && test "$mask" \
&& echo "ipmask[\$cfg]='$ip/$mask'"
test "$router" && echo "gw[\$cfg]='$router'"
test "$dns" && echo "dns[\$cfg]='$dns'"
# TODO: I never saw a dhcp server which correctly announces
# which subnet(s) is/are available thru advertised router
# Assume 0/0
echo "net[\$cfg]='0/0'"
} >"$2"

View File

@@ -0,0 +1,82 @@
#!/bin/sh
# executed by udhcpc
# parameters: $1 and environment
#
# $1 is:
#
# deconfig: This argument is used when udhcpc starts, and
# when a lease is lost. The script should put the interface in an
# up, but deconfigured state, ie: ifconfig $interface 0.0.0.0.
# Environment: interface=ethN
#
# bound: This argument is used when udhcpc moves from an
# unbound, to a bound state. All of the paramaters are set in
# enviromental variables, The script should configure the interface,
# and set any other relavent parameters (default gateway, dns server, etc).
# Environment:
# dhcptype=5
# serverid=172.16.42.102
# lease=97200
# interface=eth0
# ip=172.16.42.177
# subnet=255.255.255.0
# mask=24
# broadcast=172.16.22.255
# router=172.16.42.98
# dns=10.34.32.125 10.32.63.5 10.34.255.7 10.11.255.27
# domain=lab.example.com example.com
# ntpsrv=10.34.32.125 10.34.255.7
#
# renew: This argument is used when a DHCP lease is renewed. All of
# the paramaters are set in enviromental variables. This argument is
# used when the interface is already configured, so the IP address,
# will not change, however, the other DHCP paramaters, such as the
# default gateway, subnet mask, and dns server may change.
# Environment: same as for "bound".
#
# nak: This argument is used with udhcpc receives a NAK message.
# The script with the deconfig argument will be called directly
# afterwards, so no changes to the network interface are neccessary.
# This hook is provided for purely informational purposes (the
# message option may contain a reason for the NAK).
# Environment: interface=ethN, serverid=IP_ADDR
#
# leasefail: called when lease cannot be obtained
# (for example, when DHCP server is down).
# Environment: interface=ethN
# TODO: put domain into /etc/resolv.conf (thru /var/service/fw)
# TODO: feed ntp IPs to /var/service/ntp
service=`basename $PWD`
outfile="$service.ipconf"
dir="/var/run/service/fw"
exec >>"$0.out" 2>&1
echo "`date`: Params: $*"
if test x"$1" != x"bound" && test x"$1" != x"renew" ; then
# Reconfigure network with this interface disabled
echo "Deconfiguring"
rm "$service.out"
rm "$outfile"
rm "$dir/$outfile"
sv u /var/service/fw
exit
fi
# Bound: we've got the lease
# Process params
env >"$service.out"
./convert2ipconf "$service.out" "$outfile"
# Reconfigure routing and firewall if needed
diff --brief "$outfile" "$dir/$outfile" >/dev/null 2>&1
if test "$?" != "0"; then
echo "Reconfiguring"
mkdir -p "$dir" 2>/dev/null
cp "$outfile" "$dir/$outfile"
sv u /var/service/fw
fi

View File

@@ -0,0 +1,21 @@
#!/bin/sh
user=logger
logdir="/var/log/service/`(cd ..;basename $PWD)`"
mkdir -p "$logdir" 2>/dev/null
chown -R "$user": "$logdir"
chmod -R go-rwxst,u+rwX "$logdir"
rm logdir
ln -s "$logdir" logdir
# make this dir accessible to logger
chmod a+rX .
exec >/dev/null
exec 2>&1
exec \
env - PATH="$PATH" \
softlimit \
setuidgid "$user" \
svlogd -tt "$logdir"

View File

@@ -0,0 +1,4 @@
#!/bin/sh
cd log/logdir || exit 1
cat @* current | $PAGER

View File

@@ -0,0 +1,23 @@
#!/bin/sh
exec 2>&1
exec </dev/null
pwd="$PWD"
if="${PWD##*/dhcp_}"
echo "* Upping iface $if"
ip link set dev "$if" up
echo "* Starting udhcpc"
exec \
env - PATH="$PATH" \
softlimit \
setuidgid root \
udhcpc -vv \
--hostname=null \
--foreground \
--interface="$if" \
--pidfile="$pwd/udhcpc.pid" \
--script="$pwd/dhcp_handler"

View File

@@ -0,0 +1,4 @@
#!/bin/sh
cd log/logdir || exit 1
watch -n2 'w=`ttysize w`; h=`ttysize h`; tail -$((h-3)) current 2>&1 | cut -b0-$((w-2))'