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|
#!/bin/sh
# PROVIDE: gnbd
# REQUIRE: NETWORKING
#
# Configuration settings for gnbd in /etc/rc.conf:
#
# gnbd_enable (bool): Enable gnbd. (default=NO)
# gnbd_devices (list): List of devices.
# gnbd_<device>_host (str): Required. Host to connect to.
# gnbd_<device>_conns (int): Use this many parallel connections.
# gnbd_<device>_port (int): Port to connect to.
# gnbd_<device>_exportname (str): Connect to the named export.
# gnbd_<device>_cacert (str): Verify TLS connections against the PEM-formatted
# CA certificate at the given path.
# gnbd_<device>_cert (str): Make a TLS connection using the PEM-formatted
# client certificate at the given path.
# gnbd_<device>_key (str): Make a TLS connection using the PEM-formatted
# client key at the given path.
# gnbd_<device>_waitsec (int): Retry until connections are re-established, waiting
# this many seconds between successive retries.
#
# Commands for gnbd:
#
# start: Connect to <device>.
# stop: Disconnect from <device>.
# restart: Reconnect to <device>.
# Tip: Use the devd.conf(5) file included with this port.
# status: Get status of each <device>.
#
# Examples:
#
# service gnbd start - Connect to all devices.
# service gnbd stop - Disconnect from all devices.
# service gnbd start <device> - Connect to a specific device.
. /etc/rc.subr
name="gnbd"
desc="NBD client for FreeBSD GEOM framework"
rcvar="${name}_enable"
start_precmd="gnbd_prestart"
start_cmd="gnbd_start"
stop_cmd="gnbd_stop"
restart_cmd="gnbd_restart"
status_cmd="gnbd_status"
gnbd_bin="%%PREFIX%%/sbin/${name}"
load_rc_config $name
: ${gnbd_enable:="NO"}
gnbd_prestart()
{
${gnbd_bin} load
}
gnbd_start()
{
local device="$1"
local host conns port exportname cacert cert key
local var
for var in host conns port exportname cacert cert key; do
eval ${var}="\${gnbd_${device}_${var}}"
local value
eval value="\$${var}"
if [ -n "${value}" ]; then
debug "${var}=${value}"
fi
done
if [ -z "${host}" ]; then
echo "gnbd_${device}_host: host is not configured, ignoring this device..."
return 1
fi
local gnbd_args=
if [ -n "${conns}" ]; then
gnbd_args="-c ${conns}"
fi
if [ -n "${port}" ]; then
gnbd_args="${gnbd_args} -p ${port}"
fi
if [ -n "${exportname}" ]; then
gnbd_args="${gnbd_args} -n \"${exportname}\""
fi
if [ -n "${cacert}" ]; then
gnbd_args="${gnbd_args} -A \"${cacert}\""
fi
if [ -n "${cert}" ]; then
gnbd_args="${gnbd_args} -C \"${cert}\""
fi
if [ -n "${key}" ]; then
gnbd_args="${gnbd_args} -K \"${key}\""
fi
if [ -n "${gnbd_args}" ]; then
debug "gnbd args: ${gnbd_args}"
fi
if [ ! -c "/dev/${device}" ]; then
eval ${gnbd_bin} connect ${gnbd_args} ${host}
fi
}
gnbd_stop()
{
local device="$1"
if [ -c "/dev/${device}" ]; then
${gnbd_bin} disconnect ${device}
fi
}
gnbd_restart()
{
local device="$1"
local waitsec
eval waitsec="\${gnbd_${device}_waitsec}"
local gnbd_args=
if [ -n "${waitsec}" ]; then
gnbd_args="-r ${waitsec}"
debug "waitsec=${waitsec}"
fi
if [ -n "${gnbd_args}" ]; then
debug "gnbd args: ${gnbd_args}"
fi
eval ${gnbd_bin} reconnect ${gnbd_args} ${device}
}
gnbd_status()
{
local device="$1"
if [ -c "/dev/${device}" ]; then
${gnbd_bin} status -s "${device}"
fi
}
cmd="$1"
if [ $# -gt 0 ]; then
shift
fi
if [ -n "$1" ]; then
gnbd_devices="$1"
fi
if [ -z "${gnbd_devices}" ]; then
warn "No devices are configured, configure one to make this rc script useful!"
fi
for device in ${gnbd_devices}; do
run_rc_command "${cmd}" "${device}"
done
|
