/usr/share/openvswitch/scripts/ovs-lib is in openvswitch-common 2.6.2~pre+git20161223-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# It is not intended to be invoked on its own.
# Copyright (C) 2009, 2010, 2011, 2012 Nicira, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
## ----------------- ##
## configure options ##
## ----------------- ##
# All of these should be substituted by the Makefile at build time.
logdir=${OVS_LOGDIR-'/var/log/openvswitch'} # /var/log/openvswitch
rundir=${OVS_RUNDIR-'/var/run/openvswitch'} # /var/run/openvswitch
sysconfdir=${OVS_SYSCONFDIR-'/etc'} # /etc
etcdir=$sysconfdir/openvswitch # /etc/openvswitch
datadir=${OVS_PKGDATADIR-'/usr/share/openvswitch'} # /usr/share/openvswitch
bindir=${OVS_BINDIR-'/usr/bin'} # /usr/bin
sbindir=${OVS_SBINDIR-'/usr/sbin'} # /usr/sbin
# /etc/openvswitch or /var/lib/openvswitch
if test X"$OVS_DBDIR" != X; then
dbdir=$OVS_DBDIR
elif test X"$OVS_SYSCONFDIR" != X; then
dbdir=$OVS_SYSCONFDIR/openvswitch
else
dbdir='/etc/openvswitch'
fi
ovs_ctl_log () {
echo "$@" >> "${logdir}/ovs-ctl.log"
}
ovs_ctl () {
case "$@" in
*"=strace"*)
# In case of running the daemon with strace, piping the o/p causes
# the script to block (strace probably does not close the inherited
# pipe). So, do not log the o/p to ovs-ctl.log.
"${datadir}/scripts/ovs-ctl" "$@"
;;
"status")
# In case of the command 'status', we should return the exit status
# of ovs-ctl. It is also useful to document the o/p in ovs-ctl.log.
display=`"${datadir}/scripts/ovs-ctl" "$@" 2>&1`
rc=$?
if test -w "${logdir}/ovs-ctl.log"; then
echo "${display}" | tee -a "${logdir}/ovs-ctl.log"
else
echo "${display}"
fi
return ${rc}
;;
*)
echo "`date -u`:$@" >> "${logdir}/ovs-ctl.log"
"${datadir}/scripts/ovs-ctl" "$@" 2>&1 | tee -a "${logdir}/ovs-ctl.log"
;;
esac
}
VERSION='2.6.2'
DAEMON_CWD=/
LC_ALL=C; export LC_ALL
## ------------- ##
## LSB functions ##
## ------------- ##
# Use the system's own implementations if it has any.
if test -e /etc/init.d/functions; then
. /etc/init.d/functions
elif test -e /etc/rc.d/init.d/functions; then
. /etc/rc.d/init.d/functions
elif test -e /lib/lsb/init-functions; then
. /lib/lsb/init-functions
fi
# Implement missing functions (e.g. OpenSUSE lacks 'action').
if type log_success_msg >/dev/null 2>&1; then :; else
log_success_msg () {
printf '%s.\n' "$*"
}
fi
if type log_failure_msg >/dev/null 2>&1; then :; else
log_failure_msg () {
printf '%s ... failed!\n' "$*"
}
fi
if type log_warning_msg >/dev/null 2>&1; then :; else
log_warning_msg () {
printf '%s ... (warning).\n' "$*"
}
fi
if type action >/dev/null 2>&1; then :; else
action () {
STRING=$1
shift
"$@"
rc=$?
if test $rc = 0; then
log_success_msg "$STRING"
else
log_failure_msg "$STRING"
fi
return $rc
}
fi
## ------- ##
## Daemons ##
## ------- ##
pid_exists () {
# This is better than "kill -0" because it doesn't require permission to
# send a signal (so daemon_status in particular works as non-root).
test -d /proc/"$1"
}
pid_comm_check () {
[ "$1" = "`cat /proc/$2/comm`" ]
}
# version_geq version_a version_b
#
# Compare (dot separated) version numbers. Returns true (exit code 0) if
# version_a is greater or equal than version_b, otherwise false (exit code 1).
version_geq() {
echo $1 $2 | awk '{
n1 = split($1, a, ".");
n2 = split($2, b, ".");
n = (n1 > n2) ? n1 : n2;
for (i = 1; i <= n; i++) {
if (a[i]+0 < b[i]+0) exit 1
if (a[i]+0 > b[i]+0) exit 0
}
}'
}
install_dir () {
DIR="$1"
if test ! -d "$DIR"; then
install -d -m 755 -o root -g root "$DIR"
restorecon "$DIR" >/dev/null 2>&1
fi
}
start_daemon () {
priority=$1
wrapper=$2
shift; shift
daemon=$1
strace=""
# drop core files in a sensible place
install_dir "$DAEMON_CWD"
set "$@" --no-chdir
cd "$DAEMON_CWD"
# log file
install_dir "$logdir"
set "$@" --log-file="$logdir/$daemon.log"
# pidfile and monitoring
install_dir "$rundir"
set "$@" --pidfile="$rundir/$daemon.pid"
set "$@" --detach
test X"$MONITOR" = Xno || set "$@" --monitor
# wrapper
case $wrapper in
valgrind)
if (valgrind --version) > /dev/null 2>&1; then
set valgrind -q --leak-check=full --time-stamp=yes \
--log-file="$logdir/$daemon.valgrind.log.%p" "$@"
else
log_failure_msg "valgrind not installed, running $daemon without it"
fi
;;
strace)
if (strace -V) > /dev/null 2>&1; then
strace="strace -tt -T -s 256 -ff"
if (strace -DV) > /dev/null 2>&1; then
# Has the -D option.
set $strace -D -o "$logdir/$daemon.strace.log" "$@"
strace=""
fi
else
log_failure_msg "strace not installed, running $daemon without it"
fi
;;
glibc)
set env MALLOC_CHECK_=2 MALLOC_PERTURB_=165 "$@"
;;
'')
;;
*)
log_failure_msg "unknown wrapper $wrapper, running $daemon without it"
;;
esac
# priority
if test X"$priority" != X; then
set nice -n "$priority" "$@"
fi
action "Starting $daemon" "$@"
if test X"$strace" != X; then
# Strace doesn't have the -D option so we attach after the fact.
setsid $strace -o "$logdir/$daemon.strace.log" \
-p `cat $rundir/$daemon.pid` > /dev/null 2>&1 &
fi
}
stop_daemon () {
if test -e "$rundir/$1.pid"; then
if pid=`cat "$rundir/$1.pid"`; then
graceful="EXIT .1 .25 .65 1"
actions="TERM .1 .25 .65 1 1 1 1 \
KILL 1 1 1 2 10 15 30 \
FAIL"
version=`ovs-appctl -T 1 -t $rundir/$1.$pid.ctl version \
| awk 'NR==1{print $NF}'`
# Use `ovs-appctl exit` only if the running daemon version
# is >= 2.5.90. This script might be used during upgrade to
# stop older versions of daemons which do not behave correctly
# with `ovs-appctl exit` (e.g. ovs-vswitchd <= 2.5.0 deletes
# internal ports).
if version_geq "$version" "2.5.90"; then
actions="$graceful $actions"
fi
for action in $actions; do
if pid_exists "$pid" >/dev/null 2>&1; then :; else
return 0
fi
case $action in
EXIT)
action "Exiting $1 ($pid)" \
${bindir}/ovs-appctl -T 1 -t $rundir/$1.$pid.ctl exit
;;
TERM)
action "Killing $1 ($pid)" kill $pid
;;
KILL)
action "Killing $1 ($pid) with SIGKILL" kill -9 $pid
;;
FAIL)
log_failure_msg "Killing $1 ($pid) failed"
return 1
;;
*)
sleep $action
;;
esac
done
fi
fi
log_success_msg "$1 is not running"
}
daemon_status () {
pidfile=$rundir/$1.pid
if test -e "$pidfile"; then
if pid=`cat "$pidfile"`; then
if pid_exists "$pid"; then
echo "$1 is running with pid $pid"
return 0
else
echo "Pidfile for $1 ($pidfile) is stale"
fi
else
echo "Pidfile for $1 ($pidfile) exists but cannot be read"
fi
else
echo "$1 is not running"
fi
return 1
}
daemon_is_running () {
pidfile=$rundir/$1.pid
test -e "$pidfile" && pid=`cat "$pidfile"` && pid_exists "$pid" && pid_comm_check $1 $pid
} >/dev/null 2>&1
# Prints commands needed to move the ip address from interface $1 to interface
# $2
move_ip_address () {
if [ -z "$1" ] || [ -z "$2" ]; then
return
fi
dev="$1"
dst="$2"
# IP addresses (including IPv6).
echo "ip addr flush dev $dev 2>/dev/null" # Suppresses "Nothing to flush".
ip addr show dev $dev | while read addr; do
set -- $addr
# Check and trim family.
family=$1
shift
case $family in
inet | inet6) ;;
*) continue ;;
esac
# Trim device off the end--"ip" insists on having "dev" precede it.
addrcmd=
while test $# != 0; do
case $1 in
dynamic)
# Omit kernel-maintained route.
continue 2
;;
scope)
if test "$2" = link -a "$family" != inet6; then
# Omit route derived from IP address, e.g.
# 172.16.0.0/16 derived from 172.16.12.34,
# but preserve IPv6 link-local address.
continue 2
fi
;;
"$dev"|"$dev:"*)
# Address label string
label=`echo $1 | sed "s/$dev/$dst/"`
addrcmd="$addrcmd label $label"
shift
continue
;;
esac
addrcmd="$addrcmd $1"
shift
done
if test "$1" != "$dev"; then
addrcmd="$addrcmd $1"
fi
echo ip -f $family addr add $addrcmd dev $dst
done
}
# Prints commands needed to move the ip route of interface $1 to interface $2
move_ip_routes () {
if [ -z "$1" ] || [ -z "$2" ]; then
return
fi
dev="$1"
dst="$2"
echo "ip route flush dev $dev proto boot 2>/dev/null" # Suppresses "Nothing to flush".
ip route show dev $dev | while read route; do
# "proto kernel" routes are installed by the kernel automatically.
case $route in
*" proto kernel "*) continue ;;
esac
echo "ip route add $route dev $dst"
done
}
ovsdb_tool () {
ovsdb-tool -vconsole:off "$@"
}
create_db () {
DB_FILE="$1"
DB_SCHEMA="$2"
action "Creating empty database $DB_FILE" ovsdb_tool create "$DB_FILE" "$DB_SCHEMA"
}
upgrade_db () {
DB_FILE="$1"
DB_SCHEMA="$2"
schemaver=`ovsdb_tool schema-version "$DB_SCHEMA"`
if test ! -e "$DB_FILE"; then
log_warning_msg "$DB_FILE does not exist"
install_dir `dirname $DB_FILE`
create_db "$DB_FILE" "$DB_SCHEMA"
elif test X"`ovsdb_tool needs-conversion "$DB_FILE" "$DB_SCHEMA"`" != Xno; then
# Back up the old version.
version=`ovsdb_tool db-version "$DB_FILE"`
cksum=`ovsdb_tool db-cksum "$DB_FILE" | awk '{print $1}'`
backup=$DB_FILE.backup$version-$cksum
action "Backing up database to $backup" cp "$DB_FILE" "$backup" || return 1
# Compact database. This is important if the old schema did not enable
# garbage collection (i.e. if it did not have any tables with "isRoot":
# true) but the new schema does. In that situation the old database
# may contain a transaction that creates a record followed by a
# transaction that creates the first use of the record. Replaying that
# series of transactions against the new database schema (as "convert"
# does) would cause the record to be dropped by the first transaction,
# then the second transaction would cause a referential integrity
# failure (for a strong reference).
#
# Errors might occur on an Open vSwitch downgrade if ovsdb-tool doesn't
# understand some feature of the schema used in the OVSDB version that
# we're downgrading from, so we don't give up on error.
action "Compacting database" ovsdb_tool compact "$DB_FILE"
# Upgrade or downgrade schema.
if action "Converting database schema" ovsdb_tool convert "$DB_FILE" "$DB_SCHEMA"; then
:
else
log_warning_msg "Schema conversion failed, using empty database instead"
rm -f "$DB_FILE"
create_db "$DB_FILE" "$DB_SCHEMA"
fi
fi
}
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