diff options
Diffstat (limited to 'utilities/ovs-lib.in')
| -rw-r--r-- | utilities/ovs-lib.in | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/utilities/ovs-lib.in b/utilities/ovs-lib.in new file mode 100644 index 00000000..f53d4afd --- /dev/null +++ b/utilities/ovs-lib.in @@ -0,0 +1,172 @@ +# This is a shell function library sourced by some Open vSwitch scripts. +# It is not intended to be invoked on its own. + +# Copyright (C) 2009, 2010, 2011 Nicira Networks, 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=${OVS_LOGDIR-'@LOGDIR@'} # /var/log/openvswitch +rundir=${OVS_RUNDIR-'@RUNDIR@'} # /var/run/openvswitch +sysconfdir=${OVS_SYSCONFDIR-'@sysconfdir@'} # /etc +etcdir=$sysconfdir/openvswitch # /etc/openvswitch +datadir=${OVS_PKGDATADIR-'@pkgdatadir@'} # /usr/share/openvswitch +bindir=${OVS_BINDIR-'@bindir@'} # /usr/bin +sbindir=${OVS_SBINDIR-'@sbindir@'} # /usr/sbin + +VERSION='@VERSION@' +case @BUILDNR@ in + [1-9]*) BUILDNR='+build@BUILDNR@' ;; + *) BUILDNR= ;; +esac + +LC_ALL=C; export LC_ALL + +## ------------- ## +## LSB functions ## +## ------------- ## + +# Use the system's own implementations if it has any. +if test -e /etc/init.d/functions; then + . /etc/init.d/functions +elif test -e /etc/rc.d/init.d/functions; then + . /etc/rc.d/init.d/functions +elif test -e /lib/lsb/init-functions; then + . /lib/lsb/init-functions +fi + +# Implement missing functions (e.g. OpenSUSE lacks 'action'). +if type log_success_msg >/dev/null 2>&1; then :; else + log_success_msg () { + printf '%s.\n' "$*" + } +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" +} + +start_daemon () { + priority=$1 + shift + daemon=$1 + + # drop core files in a sensible place + test -d "$DAEMON_CWD" || install -d -m 755 -o root -g root "$DAEMON_CWD" + set "$@" --no-chdir + cd "$DAEMON_CWD" + + # log file + test -d "$logdir" || install -d -m 755 -o root -g root "$logdir" + set "$@" --log-file="$logdir/$daemon.log" + + # pidfile and monitoring + test -d "$rundir" || install -d -m 755 -o root -g root "$rundir" + set "$@" --pidfile="$rundir/$daemon.pid" + set "$@" --detach --monitor + + # priority + if test X"$priority" != X; then + set nice -n "$priority" "$@" + fi + + action "Starting $daemon" "$@" +} + +DAEMON_CWD=/ +stop_daemon () { + if test -e "$rundir/$1.pid"; then + if pid=`cat "$rundir/$1.pid"`; then + for action in TERM .1 .25 .65 1 1 1 1 KILL 1 1 1 1 FAIL; do + case $action in + 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 + ;; + *) + if pid_exists $pid >/dev/null 2>&1; then + sleep $action + else + return 0 + fi + ;; + 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" +} >/dev/null 2>&1 |