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lxc: Implement virDomainGetHostnameFlags

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Since there is no guest agent in LXC world (yet), we can
implement _LEASE flag only.

Signed-off-by: Julio Faracco <jcfaracco@gmail.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Erik Skultety <eskultet@redhat.com>
This commit is contained in:
Julio Faracco 2020-01-09 11:15:05 +01:00 committed by Michal Privoznik
parent a4a5827c9f
commit 1becd935c5
1 changed files with 79 additions and 0 deletions
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79
src/lxc/lxc_driver.c
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@ -5291,6 +5291,84 @@ lxcDomainGetCPUStats(virDomainPtr dom,
}
static char *
lxcDomainGetHostname(virDomainPtr dom,
unsigned int flags)
{
virLXCDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
char macaddr[VIR_MAC_STRING_BUFLEN];
g_autoptr(virConnect) conn = NULL;
virNetworkDHCPLeasePtr *leases = NULL;
int n_leases;
size_t i, j;
char *hostname = NULL;
virCheckFlags(VIR_DOMAIN_GET_HOSTNAME_LEASE, NULL);
if (!(vm = lxcDomObjFromDomain(dom)))
return NULL;
if (virDomainGetHostnameEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virLXCDomainObjBeginJob(driver, vm, LXC_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!(conn = virGetConnectNetwork()))
goto endjob;
for (i = 0; i < vm->def->nnets; i++) {
g_autoptr(virNetwork) network = NULL;
virDomainNetDefPtr net = vm->def->nets[i];
if (net->type != VIR_DOMAIN_NET_TYPE_NETWORK)
continue;
virMacAddrFormat(&net->mac, macaddr);
network = virNetworkLookupByName(conn, net->data.network.name);
if (!network)
goto endjob;
if ((n_leases = virNetworkGetDHCPLeases(network, macaddr,
&leases, 0)) < 0)
goto endjob;
for (j = 0; j < n_leases; j++) {
virNetworkDHCPLeasePtr lease = leases[j];
if (lease->hostname && !hostname)
hostname = g_strdup(lease->hostname);
virNetworkDHCPLeaseFree(lease);
}
VIR_FREE(leases);
if (hostname)
goto endjob;
}
if (!hostname) {
virReportError(VIR_ERR_NO_HOSTNAME,
_("no hostname found for domain %s"),
vm->def->name);
goto endjob;
}
endjob:
virLXCDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return hostname;
}
static int
lxcNodeGetFreePages(virConnectPtr conn,
unsigned int npages,
@ -5436,6 +5514,7 @@ static virHypervisorDriver lxcHypervisorDriver = {
.domainSetMetadata = lxcDomainSetMetadata, /* 1.1.3 */
.domainGetMetadata = lxcDomainGetMetadata, /* 1.1.3 */
.domainGetCPUStats = lxcDomainGetCPUStats, /* 1.2.2 */
.domainGetHostname = lxcDomainGetHostname, /* 6.0.0 */
.nodeGetMemoryParameters = lxcNodeGetMemoryParameters, /* 0.10.2 */
.nodeSetMemoryParameters = lxcNodeSetMemoryParameters, /* 0.10.2 */
.domainSendProcessSignal = lxcDomainSendProcessSignal, /* 1.0.1 */