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Introduce source flags to virDomainGetHostname()

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There is a lots of possibilities to retrieve hostname information
from domain. Libvirt could use lease information from dnsmasq to
get current hostname too. QEMU supports QEMU-agent but it can use
lease source.

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 11:12:37 +01:00 committed by Michal Privoznik
parent 2033668bc7
commit 3cf12299f6
5 changed files with 16 additions and 4 deletions
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6
include/libvirt/libvirt-domain.h
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@ -1567,6 +1567,12 @@ int virDomainSetMemoryStatsPeriod (virDomainPtr domain,
int virDomainGetMaxVcpus (virDomainPtr domain);
int virDomainGetSecurityLabel (virDomainPtr domain,
virSecurityLabelPtr seclabel);
typedef enum {
VIR_DOMAIN_GET_HOSTNAME_LEASE = (1 << 0), /* Parse DHCP lease file */
VIR_DOMAIN_GET_HOSTNAME_AGENT = (1 << 1), /* Query qemu guest agent */
} virDomainGetHostnameFlags;
char * virDomainGetHostname (virDomainPtr domain,
unsigned int flags);
int virDomainGetSecurityLabelList (virDomainPtr domain,

1
include/libvirt/virterror.h
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@ -332,6 +332,7 @@ typedef enum {
VIR_ERR_INVALID_NETWORK_PORT = 105, /* invalid network port object */
VIR_ERR_NETWORK_PORT_EXIST = 106, /* the network port already exist */
VIR_ERR_NO_NETWORK_PORT = 107, /* network port not found */
VIR_ERR_NO_HOSTNAME = 108, /* no domain's hostname found */
# ifdef VIR_ENUM_SENTINELS
VIR_ERR_NUMBER_LAST

9
src/libvirt-domain.c
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@ -11025,12 +11025,13 @@ virDomainGetDiskErrors(virDomainPtr dom,
/**
* virDomainGetHostname:
* @domain: a domain object
* @flags: extra flags; not used yet, so callers should always pass 0
* @flags: bitwise-OR of virDomainGetHostnameFlags
*
* Get the hostname for that domain.
* Get the hostname for that domain. If no hostname is found,
* then an error is raised with VIR_ERR_NO_HOSTNAME code.
*
* Dependent on hypervisor used, this may require a guest agent to be
* available.
* Dependent on hypervisor and @flags used, this may require a
* guest agent to be available.
*
* Returns the hostname which must be freed by the caller, or
* NULL if there was an error.

1
src/remote/remote_daemon.c
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@ -296,6 +296,7 @@ static int daemonErrorLogFilter(virErrorPtr err, int priority)
case VIR_ERR_NO_DOMAIN_METADATA:
case VIR_ERR_NO_SERVER:
case VIR_ERR_NO_CLIENT:
case VIR_ERR_NO_HOSTNAME:
return VIR_LOG_DEBUG;
}

3
src/util/virerror.c
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@ -1233,6 +1233,9 @@ static const virErrorMsgTuple virErrorMsgStrings[] = {
[VIR_ERR_NO_NETWORK_PORT] = {
N_("network port not found"),
N_("network port not found: %s") },
[VIR_ERR_NO_HOSTNAME] = {
N_("no hostname found"),
N_("no hostname found: %s") },
};
G_STATIC_ASSERT(G_N_ELEMENTS(virErrorMsgStrings) == VIR_ERR_NUMBER_LAST);