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Make avahi startup more robust. 

If the hostname of the current virtualization machine
could not be resolved, then libvirtd would fail to
start.  However, for disconnected operation (on a laptop,
for instance) the hostname may very legitimately not
be resolvable.  This patch makes it so that if we can't
resolve the hostname, avahi doesn't fail, it just uses
a less useful MDNS string.

Signed-off-by: Chris Lalancette <clalance@redhat.com>
This commit is contained in:
Chris Lalancette 2010-03-23 09:01:37 -04:00
parent ce380b8e6f
commit 8274993f29
1 changed files with 21 additions and 9 deletions
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30
daemon/libvirtd.c
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@ -998,22 +998,34 @@ static int qemudNetworkInit(struct qemud_server *server) {
struct libvirtd_mdns_group *group;
struct qemud_socket *sock;
int port = 0;
int ret;
server->mdns = libvirtd_mdns_new();
if (!mdns_name) {
char groupname[64], *localhost, *tmp;
/* Extract the host part of the potentially FQDN */
char *groupname, *localhost, *tmp;
localhost = virGetHostname(NULL);
if (localhost == NULL)
goto cleanup;
if ((tmp = strchr(localhost, '.')))
*tmp = '\0';
snprintf(groupname, sizeof(groupname)-1, "Virtualization Host %s", localhost);
groupname[sizeof(groupname)-1] = '\0';
group = libvirtd_mdns_add_group(server->mdns, groupname);
/* we couldn't resolve the hostname; assume that we are
* running in disconnected operation, and report a less
* useful Avahi string
*/
ret = virAsprintf(&groupname, "Virtualization Host");
else {
/* Extract the host part of the potentially FQDN */
if ((tmp = strchr(localhost, '.')))
*tmp = '\0';
ret = virAsprintf(&groupname, "Virtualization Host %s",
localhost);
}
VIR_FREE(localhost);
if (ret < 0) {
virReportOOMError();
goto cleanup;
}
group = libvirtd_mdns_add_group(server->mdns, groupname);
VIR_FREE(groupname);
} else {
group = libvirtd_mdns_add_group(server->mdns, mdns_name);
}