/*
* libvirt-nwfilter.c: entry points for virNwfilterPtr APIs
*
* Copyright (C) 2006-2015 Red Hat, Inc.
*
* 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/>.
*/
#include <config.h>
#include "datatypes.h"
#include "virlog.h"
VIR_LOG_INIT("libvirt.nwfilter");
#define VIR_FROM_THIS VIR_FROM_NWFILTER
/**
* virConnectNumOfNWFilters:
* @conn: pointer to the hypervisor connection
*
* Provides the number of nwfilters.
*
* Returns the number of nwfilters found or -1 in case of error
*/
int
virConnectNumOfNWFilters(virConnectPtr conn)
{
VIR_DEBUG("conn=%p", conn);
virResetLastError();
virCheckConnectReturn(conn, -1);
if (conn->nwfilterDriver && conn->nwfilterDriver->connectNumOfNWFilters) {
int ret;
ret = conn->nwfilterDriver->connectNumOfNWFilters(conn);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListAllNWFilters:
* @conn: Pointer to the hypervisor connection.
* @filters: Pointer to a variable to store the array containing the network
* filter objects or NULL if the list is not required (just returns
* number of network filters).
* @flags: extra flags; not used yet, so callers should always pass 0
*
* Collect the list of network filters, and allocate an array to store those
* objects.
*
* Returns the number of network filters found or -1 and sets @filters to NULL
* in case of error. On success, the array stored into @filters is guaranteed to
* have an extra allocated element set to NULL but not included in the return count,
* to make iteration easier. The caller is responsible for calling
* virNWFilterFree() on each array element, then calling free() on @filters.
*/
int
virConnectListAllNWFilters(virConnectPtr conn,
virNWFilterPtr **filters,
unsigned int flags)
{
VIR_DEBUG("conn=%p, filters=%p, flags=%x", conn, filters, flags);
virResetLastError();
if (filters)
*filters = NULL;
virCheckConnectReturn(conn, -1);
if (conn->nwfilterDriver &&
conn->nwfilterDriver->connectListAllNWFilters) {
int ret;
ret = conn->nwfilterDriver->connectListAllNWFilters(conn, filters, flags);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return -1;
}
/**
* virConnectListNWFilters:
* @conn: pointer to the hypervisor connection
* @names: array to collect the list of names of network filters
* @maxnames: size of @names
*
* Collect the list of network filters, and store their names in @names
*
* Returns the number of network filters found or -1 in case of error
*/
int
virConnectListNWFilters(virConnectPtr conn, char **const names, int maxnames)
{
VIR_DEBUG("conn=%p, names=%p, maxnames=%d", conn, names, maxnames);
virResetLastError();
virCheckConnectReturn(conn, -1);
virCheckNonNullArgGoto(names, error);
virCheckNonNegativeArgGoto(maxnames, error);
if (conn->nwfilterDriver && conn->nwfilterDriver->connectListNWFilters) {
int ret;
ret = conn->nwfilterDriver->connectListNWFilters(conn, names, maxnames);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return -1;
}
/**
* virNWFilterLookupByName:
* @conn: pointer to the hypervisor connection
* @name: name for the network filter
*
* Try to lookup a network filter on the given hypervisor based on its name.
*
* virNWFilterFree should be used to free the resources after the
* nwfilter object is no longer needed.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* network filter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByName(virConnectPtr conn, const char *name)
{
VIR_DEBUG("conn=%p, name=%s", conn, NULLSTR(name));
virResetLastError();
virCheckConnectReturn(conn, NULL);
virCheckNonNullArgGoto(name, error);
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterLookupByName) {
virNWFilterPtr ret;
ret = conn->nwfilterDriver->nwfilterLookupByName(conn, name);
if (!ret)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterLookupByUUID:
* @conn: pointer to the hypervisor connection
* @uuid: the raw UUID for the network filter
*
* Try to lookup a network filter on the given hypervisor based on its UUID.
*
* virNWFilterFree should be used to free the resources after the
* nwfilter object is no longer needed.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* nwfdilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
{
VIR_UUID_DEBUG(conn, uuid);
virResetLastError();
virCheckConnectReturn(conn, NULL);
virCheckNonNullArgGoto(uuid, error);
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterLookupByUUID) {
virNWFilterPtr ret;
ret = conn->nwfilterDriver->nwfilterLookupByUUID(conn, uuid);
if (!ret)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterLookupByUUIDString:
* @conn: pointer to the hypervisor connection
* @uuidstr: the string UUID for the nwfilter
*
* Try to lookup an nwfilter on the given hypervisor based on its UUID.
*
* virNWFilterFree should be used to free the resources after the
* nwfilter object is no longer needed.
*
* Returns a new nwfilter object or NULL in case of failure. If the
* nwfilter cannot be found, then VIR_ERR_NO_NWFILTER error is raised.
*/
virNWFilterPtr
virNWFilterLookupByUUIDString(virConnectPtr conn, const char *uuidstr)
{
unsigned char uuid[VIR_UUID_BUFLEN];
VIR_DEBUG("conn=%p, uuidstr=%s", conn, NULLSTR(uuidstr));
virResetLastError();
virCheckConnectReturn(conn, NULL);
virCheckNonNullArgGoto(uuidstr, error);
if (virUUIDParse(uuidstr, uuid) < 0) {
virReportInvalidArg(uuidstr,
_("uuidstr in %s must be a valid UUID"),
__FUNCTION__);
goto error;
}
return virNWFilterLookupByUUID(conn, &uuid[0]);
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterFree:
* @nwfilter: a nwfilter object
*
* Free the nwfilter object. The running instance is kept alive.
* The data structure is freed and should not be used thereafter.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNWFilterFree(virNWFilterPtr nwfilter)
{
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
virCheckNWFilterReturn(nwfilter, -1);
virObjectUnref(nwfilter);
return 0;
}
/**
* virNWFilterGetName:
* @nwfilter: a nwfilter object
*
* Get the public name for the network filter
*
* Returns a pointer to the name or NULL, the string need not be deallocated
* its lifetime will be the same as the nwfilter object.
*/
const char *
virNWFilterGetName(virNWFilterPtr nwfilter)
{
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
virCheckNWFilterReturn(nwfilter, NULL);
return nwfilter->name;
}
/**
* virNWFilterGetUUID:
* @nwfilter: a nwfilter object
* @uuid: pointer to a VIR_UUID_BUFLEN bytes array
*
* Get the UUID for a network filter
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNWFilterGetUUID(virNWFilterPtr nwfilter, unsigned char *uuid)
{
VIR_DEBUG("nwfilter=%p, uuid=%p", nwfilter, uuid);
virResetLastError();
virCheckNWFilterReturn(nwfilter, -1);
virCheckNonNullArgGoto(uuid, error);
memcpy(uuid, &nwfilter->uuid[0], VIR_UUID_BUFLEN);
return 0;
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterGetUUIDString:
* @nwfilter: a nwfilter object
* @buf: pointer to a VIR_UUID_STRING_BUFLEN bytes array
*
* Get the UUID for a network filter as string. For more information about
* UUID see RFC4122.
*
* Returns -1 in case of error, 0 in case of success
*/
int
virNWFilterGetUUIDString(virNWFilterPtr nwfilter, char *buf)
{
VIR_DEBUG("nwfilter=%p, buf=%p", nwfilter, buf);
virResetLastError();
virCheckNWFilterReturn(nwfilter, -1);
virCheckNonNullArgGoto(buf, error);
virUUIDFormat(nwfilter->uuid, buf);
return 0;
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterDefineXML:
* @conn: pointer to the hypervisor connection
* @xmlDesc: an XML description of the nwfilter
*
* Define a new network filter, based on an XML description
* similar to the one returned by virNWFilterGetXMLDesc()
*
* virNWFilterFree should be used to free the resources after the
* nwfilter object is no longer needed.
*
* Returns a new nwfilter object or NULL in case of failure
*/
virNWFilterPtr
virNWFilterDefineXML(virConnectPtr conn, const char *xmlDesc)
{
VIR_DEBUG("conn=%p, xmlDesc=%s", conn, NULLSTR(xmlDesc));
virResetLastError();
virCheckConnectReturn(conn, NULL);
virCheckNonNullArgGoto(xmlDesc, error);
virCheckReadOnlyGoto(conn->flags, error);
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterDefineXML) {
virNWFilterPtr ret;
ret = conn->nwfilterDriver->nwfilterDefineXML(conn, xmlDesc);
if (!ret)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(conn);
return NULL;
}
/**
* virNWFilterUndefine:
* @nwfilter: a nwfilter object
*
* Undefine the nwfilter object. This call will not succeed if
* a running VM is referencing the filter. This does not free the
* associated virNWFilterPtr object.
*
* Returns 0 in case of success and -1 in case of failure.
*/
int
virNWFilterUndefine(virNWFilterPtr nwfilter)
{
virConnectPtr conn;
VIR_DEBUG("nwfilter=%p", nwfilter);
virResetLastError();
virCheckNWFilterReturn(nwfilter, -1);
conn = nwfilter->conn;
virCheckReadOnlyGoto(conn->flags, error);
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterUndefine) {
int ret;
ret = conn->nwfilterDriver->nwfilterUndefine(nwfilter);
if (ret < 0)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(nwfilter->conn);
return -1;
}
/**
* virNWFilterGetXMLDesc:
* @nwfilter: a nwfilter object
* @flags: extra flags; not used yet, so callers should always pass 0
*
* Provide an XML description of the network filter. The description may be
* reused later to redefine the network filter with virNWFilterCreateXML().
*
* Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error.
* the caller must free() the returned value.
*/
char *
virNWFilterGetXMLDesc(virNWFilterPtr nwfilter, unsigned int flags)
{
virConnectPtr conn;
VIR_DEBUG("nwfilter=%p, flags=%x", nwfilter, flags);
virResetLastError();
virCheckNWFilterReturn(nwfilter, NULL);
conn = nwfilter->conn;
if (conn->nwfilterDriver && conn->nwfilterDriver->nwfilterGetXMLDesc) {
char *ret;
ret = conn->nwfilterDriver->nwfilterGetXMLDesc(nwfilter, flags);
if (!ret)
goto error;
return ret;
}
virReportUnsupportedError();
error:
virDispatchError(nwfilter->conn);
return NULL;
}
/**
* virNWFilterRef:
* @nwfilter: the nwfilter to hold a reference on
*
* Increment the reference count on the nwfilter. For each
* additional call to this method, there shall be a corresponding
* call to virNWFilterFree to release the reference count, once
* the caller no longer needs the reference to this object.
*
* This method is typically useful for applications where multiple
* threads are using a connection, and it is required that the
* connection remain open until all threads have finished using
* it. ie, each new thread using an nwfilter would increment
* the reference count.
*
* Returns 0 in case of success, -1 in case of failure.
*/
int
virNWFilterRef(virNWFilterPtr nwfilter)
{
VIR_DEBUG("nwfilter=%p refs=%d", nwfilter,
nwfilter ? nwfilter->object.u.s.refs : 0);
virResetLastError();
virCheckNWFilterReturn(nwfilter, -1);
virObjectRef(nwfilter);
return 0;
}