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/*
* Copyright (C) 2022 Red Hat, Inc.
*
* bridge_driver__conf.c: network.conf config file inspection
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*/
/* includes */
#include <config.h>
#include "configmake.h"
#include "datatypes.h"
#include "virlog.h"
#include "virerror.h"
#include "virutil.h"
#include "bridge_driver_conf.h"
#define VIR_FROM_THIS VIR_FROM_NETWORK
VIR_LOG_INIT("network.bridge_driver");
static virClass *virNetworkDriverConfigClass;
static void virNetworkDriverConfigDispose(void *obj);
static int
virNetworkConfigOnceInit(void)
{
if (!VIR_CLASS_NEW(virNetworkDriverConfig, virClassForObject()))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(virNetworkConfig);
dnsmasqCaps *
networkGetDnsmasqCaps(virNetworkDriverState *driver)
{
VIR_LOCK_GUARD lock = virLockGuardLock(&driver->lock);
return virObjectRef(driver->dnsmasqCaps);
}
static int
virNetworkLoadDriverConfig(virNetworkDriverConfig *cfg G_GNUC_UNUSED,
const char *filename)
{
g_autoptr(virConf) conf = NULL;
/* if file doesn't exist or is unreadable, ignore the "error" */
if (access(filename, R_OK) == -1)
return 0;
conf = virConfReadFile(filename, 0);
if (!conf)
return -1;
/* use virConfGetValue*(conf, ...) functions to read any settings into cfg */
return 0;
}
virNetworkDriverConfig *
virNetworkDriverConfigNew(bool privileged)
{
g_autoptr(virNetworkDriverConfig) cfg = NULL;
g_autofree char *configdir = NULL;
g_autofree char *configfile = NULL;
if (virNetworkConfigInitialize() < 0)
return NULL;
if (!(cfg = virObjectNew(virNetworkDriverConfigClass)))
return NULL;
/* configuration/state paths are one of
* ~/.config/libvirt/... (session/unprivileged)
* /etc/libvirt/... && /var/(run|lib)/libvirt/... (system/privileged).
*/
if (privileged) {
configdir = g_strdup(SYSCONFDIR "/libvirt");
cfg->networkConfigDir = g_strdup(SYSCONFDIR "/libvirt/qemu/networks");
cfg->networkAutostartDir = g_strdup(SYSCONFDIR "/libvirt/qemu/networks/autostart");
cfg->stateDir = g_strdup(RUNSTATEDIR "/libvirt/network");
cfg->pidDir = g_strdup(RUNSTATEDIR "/libvirt/network");
cfg->dnsmasqStateDir = g_strdup(LOCALSTATEDIR "/lib/libvirt/dnsmasq");
} else {
g_autofree char *rundir = virGetUserRuntimeDirectory();
configdir = virGetUserConfigDirectory();
cfg->networkConfigDir = g_strdup_printf("%s/qemu/networks", configdir);
cfg->networkAutostartDir = g_strdup_printf("%s/qemu/networks/autostart", configdir);
cfg->stateDir = g_strdup_printf("%s/network/lib", rundir);
cfg->pidDir = g_strdup_printf("%s/network/run", rundir);
cfg->dnsmasqStateDir = g_strdup_printf("%s/dnsmasq/lib", rundir);
}
configfile = g_strconcat(configdir, "/network.conf", NULL);
if (virNetworkLoadDriverConfig(cfg, configfile) < 0)
return NULL;
if (g_mkdir_with_parents(cfg->stateDir, 0777) < 0) {
virReportSystemError(errno, _("cannot create directory %1$s"), cfg->stateDir);
return NULL;
}
return g_steal_pointer(&cfg);
}
virNetworkDriverConfig *
virNetworkDriverGetConfig(virNetworkDriverState *driver)
{
VIR_LOCK_GUARD lock = virLockGuardLock(&driver->lock);
return virObjectRef(driver->config);
}
static void
virNetworkDriverConfigDispose(void *obj)
{
virNetworkDriverConfig *cfg = obj;
g_free(cfg->networkConfigDir);
g_free(cfg->networkAutostartDir);
g_free(cfg->stateDir);
g_free(cfg->pidDir);
g_free(cfg->dnsmasqStateDir);
}
int
networkDnsmasqCapsRefresh(virNetworkDriverState *driver)
{
dnsmasqCaps *caps;
if (!(caps = dnsmasqCapsNewFromBinary()))
return -1;
VIR_WITH_MUTEX_LOCK_GUARD(&driver->lock) {
virObjectUnref(driver->dnsmasqCaps);
driver->dnsmasqCaps = caps;
}
return 0;
}
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