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network: implement virNetworkUpdate for bridge_driver

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Call the network_conf function that modifies the live/persistent/both
config, then refresh/restart dnsmasq/radvd if necessary, and finally
save the config in the proper place(s).

This patch also needed to uncomment a few utility functions that were
added inside #if 0 in the previous commit (to avoid compiler errors
due to unreferenced static functions).
This commit is contained in:
Laine Stump 2012-09-16 16:42:01 -04:00
parent 1ce4922e72
commit cd331650c0
1 changed files with 112 additions and 8 deletions
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120
src/network/bridge_driver.c
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@ -468,8 +468,6 @@ networkShutdown(void) {
}
#if 0
/* currently unused, so it causes a build error unless we #if it out */
/* networkKillDaemon:
*
* kill the specified pid/name, and wait a bit to make sure it's dead.
@ -528,7 +526,6 @@ networkKillDaemon(pid_t pid, const char *daemonName, const char *networkName)
cleanup:
return ret;
}
#endif /* #if 0 */
static int
networkBuildDnsmasqHostsfile(dnsmasqContext *dctx,
@ -908,8 +905,6 @@ cleanup:
return ret;
}
#if 0
/* currently unused, so they cause a build error unless we #if them out */
/* networkRefreshDhcpDaemon:
* Update dnsmasq config files, then send a SIGHUP so that it rereads
* them.
@ -978,7 +973,6 @@ networkRestartDhcpDaemon(virNetworkObjPtr network)
/* now start dnsmasq if it should be started */
return networkStartDhcpDaemon(network);
}
#endif /* #if 0 */
static int
networkRadvdConfContents(virNetworkObjPtr network, char **configstr)
@ -1171,8 +1165,6 @@ cleanup:
return ret;
}
#if 0
/* currently unused, so they cause a build error unless we #if them out */
static int
networkRefreshRadvd(virNetworkObjPtr network)
{
@ -1191,6 +1183,8 @@ networkRefreshRadvd(virNetworkObjPtr network)
return kill(network->radvdPid, SIGHUP);
}
#if 0
/* currently unused, so it causes a build error unless we #if it out */
static int
networkRestartRadvd(virNetworkObjPtr network)
{
@ -2830,6 +2824,115 @@ cleanup:
return ret;
}
static int
networkUpdate(virNetworkPtr net,
unsigned int command,
unsigned int section,
int parentIndex,
const char *xml,
unsigned int flags)
{
struct network_driver *driver = net->conn->networkPrivateData;
virNetworkObjPtr network = NULL;
int isActive, ret = -1;
virCheckFlags(VIR_NETWORK_UPDATE_AFFECT_LIVE |
VIR_NETWORK_UPDATE_AFFECT_CONFIG,
-1);
networkDriverLock(driver);
network = virNetworkFindByUUID(&driver->networks, net->uuid);
if (!network) {
virReportError(VIR_ERR_NO_NETWORK,
"%s", _("no network with matching uuid"));
goto cleanup;
}
/* VIR_NETWORK_UPDATE_AFFECT_CURRENT means "change LIVE if network
* is active, else change CONFIG
*/
isActive = virNetworkObjIsActive(network);
if ((flags & (VIR_NETWORK_UPDATE_AFFECT_LIVE
| VIR_NETWORK_UPDATE_AFFECT_CONFIG)) ==
VIR_NETWORK_UPDATE_AFFECT_CURRENT) {
if (isActive)
flags |= VIR_NETWORK_UPDATE_AFFECT_LIVE;
else
flags |= VIR_NETWORK_UPDATE_AFFECT_CONFIG;
}
/* update the network config in memory/on disk */
if (virNetworkObjUpdate(network, command, section, parentIndex, xml, flags) < 0)
goto cleanup;
if (flags & VIR_NETWORK_UPDATE_AFFECT_CONFIG) {
/* save updated persistent config to disk */
if (virNetworkSaveConfig(driver->networkConfigDir,
virNetworkObjGetPersistentDef(network)) < 0) {
goto cleanup;
}
}
if (isActive && (flags & VIR_NETWORK_UPDATE_AFFECT_LIVE)) {
/* rewrite dnsmasq host files, restart dnsmasq, update iptables
* rules, etc, according to which section was modified. Note that
* some sections require multiple actions, so a single switch
* statement is inadequate.
*/
if (section == VIR_NETWORK_SECTION_BRIDGE ||
section == VIR_NETWORK_SECTION_DOMAIN ||
section == VIR_NETWORK_SECTION_IP ||
section == VIR_NETWORK_SECTION_IP_DHCP_RANGE) {
/* these sections all change things on the dnsmasq commandline,
* so we need to kill and restart dnsmasq.
*/
if (networkRestartDhcpDaemon(network) < 0)
goto cleanup;
} else if (section == VIR_NETWORK_SECTION_IP_DHCP_HOST ||
section == VIR_NETWORK_SECTION_DNS_HOST ||
section == VIR_NETWORK_SECTION_DNS_TXT ||
section == VIR_NETWORK_SECTION_DNS_SRV) {
/* these sections only change things in config files, so we
* can just update the config files and send SIGHUP to
* dnsmasq.
*/
if (networkRefreshDhcpDaemon(network) < 0)
goto cleanup;
}
if (section == VIR_NETWORK_SECTION_IP) {
/* only a change in IP addresses will affect radvd, and all of radvd's
* config is stored in the conf file which will be re-read with a SIGHUP.
*/
if (networkRefreshRadvd(network) < 0)
goto cleanup;
}
if (section == VIR_NETWORK_SECTION_IP ||
section == VIR_NETWORK_SECTION_FORWARD ||
section == VIR_NETWORK_SECTION_FORWARD_INTERFACE) {
/* these could affect the iptables rules */
networkRemoveIptablesRules(driver, network);
if (networkAddIptablesRules(driver, network) < 0)
goto cleanup;
}
/* save current network state to disk */
if ((ret = virNetworkSaveStatus(NETWORK_STATE_DIR, network)) < 0)
goto cleanup;
}
ret = 0;
cleanup:
if (network)
virNetworkObjUnlock(network);
networkDriverUnlock(driver);
return ret;
}
static int networkStart(virNetworkPtr net) {
struct network_driver *driver = net->conn->networkPrivateData;
virNetworkObjPtr network;
@ -3057,6 +3160,7 @@ static virNetworkDriver networkDriver = {
.networkCreateXML = networkCreate, /* 0.2.0 */
.networkDefineXML = networkDefine, /* 0.2.0 */
.networkUndefine = networkUndefine, /* 0.2.0 */
.networkUpdate = networkUpdate, /* 0.10.2 */
.networkCreate = networkStart, /* 0.2.0 */
.networkDestroy = networkDestroy, /* 0.2.0 */
.networkGetXMLDesc = networkGetXMLDesc, /* 0.2.0 */