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net-boot-config.js
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net-boot-config.js
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/*
* Copyright (c) 2016, Joyent, Inc. All rights reserved.
*
*
* Network boot-file functions
*/
var fmt = require('util').format;
var mod_fs = require('fs');
// --- Globals
var ARRAY_PROPS = [
'aggregations',
'etherstubs',
'nictags',
'resolvers',
'vnics'
];
var CONFIG = process.env.NET_BOOT_CONFIG_FILE || '/system/boot/networking.json';
var HN_CONFIG = '/usbkey/boot/networking.json';
var OBJ_PROPS = [ 'nictag_rules', 'routes' ];
// --- Internal
/**
* Fill in any missing properties from the conf object
*/
function addDefaultProperties(conf) {
ARRAY_PROPS.forEach(function (prop) {
if (!conf.hasOwnProperty(prop)) {
conf[prop] = [];
}
});
OBJ_PROPS.forEach(function (prop) {
if (!conf.hasOwnProperty(prop)) {
conf[prop] = {};
}
});
}
// --- Exports
/**
* Returns true if boot-file networking is enabled
*/
function isEnabled(callback) {
mod_fs.exists(CONFIG, function _afterEnabled(exists) {
if (exists) {
return callback(exists);
}
return mod_fs.exists(HN_CONFIG, callback);
});
}
/**
* Load and parse a single config file
*/
function loadConfFile(confFile, callback) {
mod_fs.readFile(confFile, function (err, raw) {
var conf = {};
if (err) {
return callback(err);
}
try {
conf = JSON.parse(raw);
} catch (err2) {
return callback(err2);
}
addDefaultProperties(conf);
return callback(null, conf);
});
}
/**
* Load the config file from disk
*/
function loadConfig(callback) {
loadConfFile(CONFIG, function _afterLoad(err, conf) {
if (err && err.code !== 'ENOENT') {
return callback(err);
}
if (conf) {
return callback(null, conf);
}
return loadConfFile(HN_CONFIG, function _afterHnLoad(hErr, hConf) {
if (hErr) {
if (hErr.code == 'ENOENT') {
console.warn('WARNING: No config file found');
hConf = {};
addDefaultProperties(hConf);
return callback(null, hConf);
}
return callback(hErr);
}
return callback(null, hConf);
});
});
}
function configValues(callback) {
loadConfig(function (err, conf) {
var ipKeys = [];
var tagNums = {};
var vals = {};
var admin_tag = 'admin';
if (err) {
return callback(err);
}
if (conf.dns_domain) {
vals.dns_domain = conf.dns_domain;
}
if (conf.etherstubs.length !== 0) {
vals.etherstub = conf.etherstubs.join(',');
}
if (conf.hostname) {
vals.hostname = conf.hostname;
}
if (conf.admin_tag) {
admin_tag = conf.admin_tag;
}
vals.admin_tag = admin_tag;
conf.nictags.forEach(function (tag) {
if (!tag.hasOwnProperty('name')) {
return;
}
/* if admin_tag is not 'admin', skip the admin nictag. */
if (tag.name === 'admin' && admin_tag !== tag.name) {
return;
}
if (tag.mac) {
vals[tag.name + '_nic'] = tag.mac;
}
if (tag.mtu) {
vals[tag.name + '_mtu'] = tag.mtu;
}
});
if (conf.resolvers.length !== 0) {
vals.dns_resolvers = conf.resolvers.join(',');
}
conf.vnics.forEach(function (nic) {
var iface;
var tag = nic.nic_tag;
/*
* If this is a nic tagged 'admin' and the admin_tag is not 'admin',
* skip this. When admin_tag is set to something other than
* 'admin' we want to completely override the admin_nic and not
* display it at all.
*/
if (!tag || (tag === 'admin' && admin_tag !== tag)) {
return;
}
/*
* We name the interfaces based on what nic tag they're on, so keep
* track of what number we're at per tag. This results in
* interfaces named my_tag0, my_tag1, etc. The exceptions are the
* "admin" and "external" config values, which are special in the
* SDC config. The "admin_" config keys plumb the admin physical
* nic (not a vnic). The "external_" config keys plumb external0.
*/
iface = tag;
if (!tagNums.hasOwnProperty(tag)) {
tagNums[tag] = 0;
}
/*
* If this is not the admin nic, the external nic, or the nic
* tagged with the admin_tag, add the instance number.
*/
if ((tag !== 'admin' && tag !== admin_tag && tag !== 'external')
|| tagNums[tag] !== 0) {
iface = fmt('%s%d', tag, tagNums[tag]);
}
tagNums[tag]++;
if (nic.ip) {
vals[iface + '_ip'] = nic.ip;
ipKeys.push(iface + '_ip');
}
if (nic.gateway) {
vals[iface + '_gateway'] = nic.gateway;
}
if (nic.mac) {
vals[iface + '_mac'] = nic.mac;
}
if (nic.mtu) {
vals[iface + '_mtu'] = nic.mtu;
}
if (nic.netmask) {
vals[iface + '_netmask'] = nic.netmask;
}
if (nic.overlay_nic_tags_provided) {
vals[iface + '_overlay_nic_tags_provided'] =
nic.overlay_nic_tags_provided.join(',');
}
if (nic.vlan_id) {
vals[iface + '_vlan_id'] = nic.vlan_id;
}
});
if (ipKeys.length !== 0) {
vals.bootfile_ip_keys = ipKeys.join(',');
}
conf.aggregations.forEach(function (aggr) {
if (!aggr.name) {
return;
}
if (aggr.macs && aggr.macs.length !== 0) {
vals[aggr.name + '_aggr'] = aggr.macs.join(',');
}
if (aggr.lacp_mode) {
vals[aggr.name + '_lacp_mode'] = aggr.lacp_mode;
}
if (aggr.nic_tags_provided) {
aggr.nic_tags_provided.forEach(function (t) {
vals[t + '_nic'] = aggr.name;
});
}
});
return callback(null, vals);
});
}
module.exports = {
values: configValues,
enabled: isEnabled,
load: loadConfig
};