nbd: add nbd-client init script

[feed/packages.git] / net / nbd / files / nbd-client.init

diff --git a/net/nbd/files/nbd-client.init b/net/nbd/files/nbd-client.init
new file mode 100644 (file)
index 0000000..e10c220
--- /dev/null
+++ b/net/nbd/files/nbd-client.init
@@ -0,0 +1,69 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2015 OpenWrt.org
+
+START=90
+STOP=10
+USE_PROCD=1
+
+append_arg() {
+       local cfg="$1"
+       local var="$2"
+       local opt="$3"
+       local def="$4"
+       local val
+
+       config_get val "$cfg" "$var"
+       [ -n "$val" -o -n "$def" ] && procd_append_param command $opt "${val:-$def}"
+}
+
+append_bool() {
+       local cfg="$1"
+       local var="$2"
+       local opt="$3"
+       local def="$4"
+       local val
+
+       config_get_bool val "$cfg" "$var" "$def"
+       [ "$val" = 1 ] && procd_append_param command "$opt"
+}
+
+start_instance() {
+       local cfg="$1"
+       local enabled
+
+       config_get_bool enabled "$cfg" 'enabled' '0'
+       [ "$enabled" = 0 ] && return 1
+
+       procd_open_instance
+
+       procd_set_param command /usr/sbin/nbd-client
+
+       append_arg "$cfg" server
+       append_arg "$cfg" port
+       # device path
+       procd_append_param command "/dev/$cfg"
+       procd_append_param command -nofork
+       append_bool "$cfg" sdp "-sdp"
+       append_bool "$cfg" swap "-swap"
+       append_bool "$cfg" persist "-persist"
+       append_arg "$cfg" blocksize "-block-size"
+       append_arg "$cfg" timeout "-timeout"
+       append_arg "$cfg" exportname "-name"
+
+       procd_close_instance
+}
+
+service_triggers() {
+       procd_add_reload_trigger "nbd-client"
+}
+
+start_service() {
+       config_load nbd-client
+       config_foreach start_instance nbd-client
+}
+
+stop_service() {
+       for dev in /dev/nbd*; do
+               nbd-client -d $dev 1>/dev/null 2>&1
+       done
+}