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https://gitlab.com/libvirt/libvirt.git
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ecbe86c0c5
It was suggested during review of a different patch that the libvirt interface driver API's should have "netcf:" in their log messages. This patch eliminates that from all interface driver API functions, and also eliminates the extra " - " in the case that netcf returns no details in its error info (which *never* happens at present, but could happen sometime in the future.
658 lines
20 KiB
C
658 lines
20 KiB
C
/*
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* interface_driver.c: backend driver methods to handle physical
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* interface configuration using the netcf library.
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*
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* Copyright (C) 2006-2010 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Laine Stump <laine@redhat.com>
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*/
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#include <config.h>
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#include <netcf.h>
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#include "virterror_internal.h"
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#include "datatypes.h"
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#include "netcf_driver.h"
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#include "interface_conf.h"
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#include "memory.h"
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#define VIR_FROM_THIS VIR_FROM_INTERFACE
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#define interfaceReportError(code, ...) \
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virReportErrorHelper(VIR_FROM_THIS, code, __FILE__, \
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__FUNCTION__, __LINE__, __VA_ARGS__)
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/* Main driver state */
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struct interface_driver
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{
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virMutex lock;
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struct netcf *netcf;
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};
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static void interfaceDriverLock(struct interface_driver *driver)
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{
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virMutexLock(&driver->lock);
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}
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static void interfaceDriverUnlock(struct interface_driver *driver)
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{
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virMutexUnlock(&driver->lock);
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}
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static int netcf_to_vir_err(int netcf_errcode)
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{
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switch (netcf_errcode)
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{
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case NETCF_NOERROR:
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/* no error, everything ok */
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return VIR_ERR_OK;
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case NETCF_EINTERNAL:
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/* internal error, aka bug */
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return VIR_ERR_INTERNAL_ERROR;
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case NETCF_EOTHER:
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/* other error, copout for being more specific */
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return VIR_ERR_INTERNAL_ERROR;
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case NETCF_ENOMEM:
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/*
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* allocation failed return VIR ERR NO MEMORY
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* though it should not be used now.
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*/
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return(2);
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case NETCF_EXMLPARSER:
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/* XML parser choked */
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return VIR_ERR_XML_ERROR;
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case NETCF_EXMLINVALID:
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/* XML invalid in some form */
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return VIR_ERR_XML_ERROR;
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case NETCF_ENOENT:
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/* Required entry in a tree is missing */
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return VIR_ERR_INTERNAL_ERROR;
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case NETCF_EEXEC:
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/* external program execution failed or returned non-0 */
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return VIR_ERR_INTERNAL_ERROR;
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#ifdef NETCF_EINVALIDOP
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case NETCF_EINVALIDOP:
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/* attempted operation is invalid while the system is in the current state. */
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return VIR_ERR_OPERATION_INVALID;
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#endif
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default:
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return VIR_ERR_INTERNAL_ERROR;
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}
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}
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static struct netcf_if *interfaceDriverGetNetcfIF(struct netcf *ncf, virInterfacePtr ifinfo)
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{
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/* 1) caller already has lock,
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* 2) caller cleans up iface on return
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*/
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struct netcf_if *iface = ncf_lookup_by_name(ncf, ifinfo->name);
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if (!iface) {
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const char *errmsg, *details;
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int errcode = ncf_error(ncf, &errmsg, &details);
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if (errcode != NETCF_NOERROR) {
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interfaceReportError(netcf_to_vir_err(errcode),
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_("couldn't find interface named '%s': %s%s%s"),
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ifinfo->name, errmsg, details ? " - " : "",
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details ? details : "");
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} else {
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interfaceReportError(VIR_ERR_NO_INTERFACE,
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_("couldn't find interface named '%s'"),
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ifinfo->name);
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}
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}
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return iface;
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}
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static virDrvOpenStatus interfaceOpenInterface(virConnectPtr conn,
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virConnectAuthPtr auth ATTRIBUTE_UNUSED,
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int flags ATTRIBUTE_UNUSED)
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{
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struct interface_driver *driverState;
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if (VIR_ALLOC(driverState) < 0)
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{
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virReportOOMError();
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goto alloc_error;
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}
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/* initialize non-0 stuff in driverState */
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if (virMutexInit(&driverState->lock) < 0)
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{
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/* what error to report? */
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goto mutex_error;
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}
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/* open netcf */
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if (ncf_init(&driverState->netcf, NULL) != 0)
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{
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/* what error to report? */
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goto netcf_error;
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}
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conn->interfacePrivateData = driverState;
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return VIR_DRV_OPEN_SUCCESS;
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netcf_error:
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if (driverState->netcf)
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{
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ncf_close(driverState->netcf);
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}
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virMutexDestroy (&driverState->lock);
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mutex_error:
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VIR_FREE(driverState);
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alloc_error:
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return VIR_DRV_OPEN_ERROR;
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}
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static int interfaceCloseInterface(virConnectPtr conn)
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{
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if (conn->interfacePrivateData != NULL)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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/* close netcf instance */
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ncf_close(driver->netcf);
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/* destroy lock */
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virMutexDestroy(&driver->lock);
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/* free driver state */
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VIR_FREE(driver);
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}
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conn->interfacePrivateData = NULL;
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return 0;
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}
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static int interfaceNumOfInterfaces(virConnectPtr conn)
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{
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int count;
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struct interface_driver *driver = conn->interfacePrivateData;
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interfaceDriverLock(driver);
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count = ncf_num_of_interfaces(driver->netcf, NETCF_IFACE_ACTIVE);
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if (count < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to get number of interfaces on host: %s%s%s"),
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errmsg, details ? " - " : "", details ? details : "");
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}
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interfaceDriverUnlock(driver);
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return count;
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}
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static int interfaceListInterfaces(virConnectPtr conn, char **const names, int nnames)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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int count;
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interfaceDriverLock(driver);
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count = ncf_list_interfaces(driver->netcf, nnames, names, NETCF_IFACE_ACTIVE);
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if (count < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to list host interfaces: %s%s%s"),
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errmsg, details ? " - " : "",
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details ? details : "");
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}
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interfaceDriverUnlock(driver);
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return count;
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}
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static int interfaceNumOfDefinedInterfaces(virConnectPtr conn)
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{
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int count;
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struct interface_driver *driver = conn->interfacePrivateData;
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interfaceDriverLock(driver);
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count = ncf_num_of_interfaces(driver->netcf, NETCF_IFACE_INACTIVE);
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if (count < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to get number of defined interfaces on host: %s%s%s"),
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errmsg, details ? " - " : "",
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details ? details : "");
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}
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interfaceDriverUnlock(driver);
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return count;
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}
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static int interfaceListDefinedInterfaces(virConnectPtr conn, char **const names, int nnames)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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int count;
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interfaceDriverLock(driver);
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count = ncf_list_interfaces(driver->netcf, nnames, names, NETCF_IFACE_INACTIVE);
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if (count < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to list host defined interfaces: %s%s%s"),
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errmsg, details ? " - " : "",
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details ? details : "");
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}
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interfaceDriverUnlock(driver);
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return count;
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}
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static virInterfacePtr interfaceLookupByName(virConnectPtr conn,
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const char *name)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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struct netcf_if *iface;
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virInterfacePtr ret = NULL;
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interfaceDriverLock(driver);
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iface = ncf_lookup_by_name(driver->netcf, name);
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if (!iface) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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if (errcode != NETCF_NOERROR) {
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interfaceReportError(netcf_to_vir_err(errcode),
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_("couldn't find interface named '%s': %s%s%s"),
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name, errmsg,
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details ? " - " : "", details ? details : "");
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} else {
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interfaceReportError(VIR_ERR_NO_INTERFACE,
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_("couldn't find interface named '%s'"), name);
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}
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goto cleanup;
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}
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ret = virGetInterface(conn, ncf_if_name(iface), ncf_if_mac_string(iface));
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cleanup:
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ncf_if_free(iface);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static virInterfacePtr interfaceLookupByMACString(virConnectPtr conn,
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const char *macstr)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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struct netcf_if *iface;
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int niface;
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virInterfacePtr ret = NULL;
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interfaceDriverLock(driver);
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niface = ncf_lookup_by_mac_string(driver->netcf, macstr, 1, &iface);
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if (niface < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("couldn't find interface with MAC address '%s': %s%s%s"),
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macstr, errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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if (niface == 0) {
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interfaceReportError(VIR_ERR_NO_INTERFACE,
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_("couldn't find interface with MAC address '%s'"),
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macstr);
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goto cleanup;
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}
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if (niface > 1) {
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interfaceReportError(VIR_ERR_MULTIPLE_INTERFACES,
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"%s", _("multiple interfaces with matching MAC address"));
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goto cleanup;
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}
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ret = virGetInterface(conn, ncf_if_name(iface), ncf_if_mac_string(iface));
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cleanup:
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ncf_if_free(iface);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static char *interfaceGetXMLDesc(virInterfacePtr ifinfo,
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unsigned int flags)
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{
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struct interface_driver *driver = ifinfo->conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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char *xmlstr = NULL;
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virInterfaceDefPtr ifacedef = NULL;
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char *ret = NULL;
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interfaceDriverLock(driver);
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iface = interfaceDriverGetNetcfIF(driver->netcf, ifinfo);
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if (!iface) {
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/* helper already reported error */
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goto cleanup;
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}
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if ((flags & VIR_INTERFACE_XML_INACTIVE)) {
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xmlstr = ncf_if_xml_desc(iface);
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} else {
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xmlstr = ncf_if_xml_state(iface);
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}
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if (!xmlstr) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("could not get interface XML description: %s%s%s"),
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errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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ifacedef = virInterfaceDefParseString(xmlstr);
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if (!ifacedef) {
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/* error was already reported */
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goto cleanup;
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}
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ret = virInterfaceDefFormat(ifacedef);
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if (!ret) {
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/* error was already reported */
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goto cleanup;
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}
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cleanup:
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ncf_if_free(iface);
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VIR_FREE(xmlstr);
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virInterfaceDefFree(ifacedef);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static virInterfacePtr interfaceDefineXML(virConnectPtr conn,
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const char *xml,
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unsigned int flags ATTRIBUTE_UNUSED)
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{
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struct interface_driver *driver = conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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char *xmlstr = NULL;
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virInterfaceDefPtr ifacedef = NULL;
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virInterfacePtr ret = NULL;
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interfaceDriverLock(driver);
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ifacedef = virInterfaceDefParseString(xml);
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if (!ifacedef) {
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/* error was already reported */
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goto cleanup;
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}
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xmlstr = virInterfaceDefFormat(ifacedef);
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if (!xmlstr) {
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/* error was already reported */
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goto cleanup;
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}
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iface = ncf_define(driver->netcf, xmlstr);
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if (!iface) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("could not get interface XML description: %s%s%s"),
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errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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ret = virGetInterface(conn, ncf_if_name(iface), ncf_if_mac_string(iface));
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cleanup:
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ncf_if_free(iface);
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VIR_FREE(xmlstr);
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virInterfaceDefFree(ifacedef);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static int interfaceUndefine(virInterfacePtr ifinfo) {
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struct interface_driver *driver = ifinfo->conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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int ret = -1;
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interfaceDriverLock(driver);
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iface = interfaceDriverGetNetcfIF(driver->netcf, ifinfo);
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if (!iface) {
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/* helper already reported error */
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goto cleanup;
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}
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ret = ncf_if_undefine(iface);
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if (ret < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to undefine interface %s: %s%s%s"),
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ifinfo->name, errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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cleanup:
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ncf_if_free(iface);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static int interfaceCreate(virInterfacePtr ifinfo,
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unsigned int flags ATTRIBUTE_UNUSED)
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{
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struct interface_driver *driver = ifinfo->conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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int ret = -1;
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interfaceDriverLock(driver);
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iface = interfaceDriverGetNetcfIF(driver->netcf, ifinfo);
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if (!iface) {
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/* helper already reported error */
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goto cleanup;
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}
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ret = ncf_if_up(iface);
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if (ret < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to create (start) interface %s: %s%s%s"),
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ifinfo->name, errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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cleanup:
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ncf_if_free(iface);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static int interfaceDestroy(virInterfacePtr ifinfo,
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unsigned int flags ATTRIBUTE_UNUSED)
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{
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struct interface_driver *driver = ifinfo->conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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int ret = -1;
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interfaceDriverLock(driver);
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iface = interfaceDriverGetNetcfIF(driver->netcf, ifinfo);
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if (!iface) {
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/* helper already reported error */
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goto cleanup;
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}
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ret = ncf_if_down(iface);
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if (ret < 0) {
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const char *errmsg, *details;
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int errcode = ncf_error(driver->netcf, &errmsg, &details);
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interfaceReportError(netcf_to_vir_err(errcode),
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_("failed to destroy (stop) interface %s: %s%s%s"),
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ifinfo->name, errmsg, details ? " - " : "",
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details ? details : "");
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goto cleanup;
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}
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cleanup:
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ncf_if_free(iface);
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interfaceDriverUnlock(driver);
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return ret;
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}
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static int interfaceIsActive(virInterfacePtr ifinfo)
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{
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struct interface_driver *driver = ifinfo->conn->interfacePrivateData;
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struct netcf_if *iface = NULL;
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unsigned int flags = 0;
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int ret = -1;
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interfaceDriverLock(driver);
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iface = interfaceDriverGetNetcfIF(driver->netcf, ifinfo);
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|
if (!iface) {
|
|
/* helper already reported error */
|
|
goto cleanup;
|
|
}
|
|
|
|
if (ncf_if_status(iface, &flags) < 0) {
|
|
const char *errmsg, *details;
|
|
int errcode = ncf_error(driver->netcf, &errmsg, &details);
|
|
interfaceReportError(netcf_to_vir_err(errcode),
|
|
_("failed to get status of interface %s: %s%s%s"),
|
|
ifinfo->name, errmsg, details ? " - " : "",
|
|
details ? details : "");
|
|
goto cleanup;
|
|
}
|
|
|
|
ret = flags & NETCF_IFACE_ACTIVE ? 1 : 0;
|
|
|
|
cleanup:
|
|
ncf_if_free(iface);
|
|
interfaceDriverUnlock(driver);
|
|
return ret;
|
|
}
|
|
|
|
#ifdef HAVE_NETCF_TRANSACTIONS
|
|
static int interfaceChangeBegin(virConnectPtr conn, unsigned int flags)
|
|
{
|
|
struct interface_driver *driver = conn->interfacePrivateData;
|
|
int ret;
|
|
|
|
virCheckFlags(0, -1); /* currently flags must be 0 */
|
|
|
|
interfaceDriverLock(driver);
|
|
|
|
ret = ncf_change_begin(driver->netcf, 0);
|
|
if (ret < 0) {
|
|
const char *errmsg, *details;
|
|
int errcode = ncf_error(driver->netcf, &errmsg, &details);
|
|
interfaceReportError(netcf_to_vir_err(errcode),
|
|
_("failed to begin transaction: %s%s%s"),
|
|
errmsg, details ? " - " : "",
|
|
details ? details : "");
|
|
}
|
|
|
|
interfaceDriverUnlock(driver);
|
|
return ret;
|
|
}
|
|
|
|
static int interfaceChangeCommit(virConnectPtr conn, unsigned int flags)
|
|
{
|
|
struct interface_driver *driver = conn->interfacePrivateData;
|
|
int ret;
|
|
|
|
virCheckFlags(0, -1); /* currently flags must be 0 */
|
|
|
|
interfaceDriverLock(driver);
|
|
|
|
ret = ncf_change_commit(driver->netcf, 0);
|
|
if (ret < 0) {
|
|
const char *errmsg, *details;
|
|
int errcode = ncf_error(driver->netcf, &errmsg, &details);
|
|
interfaceReportError(netcf_to_vir_err(errcode),
|
|
_("failed to commit transaction: %s%s%s"),
|
|
errmsg, details ? " - " : "",
|
|
details ? details : "");
|
|
}
|
|
|
|
interfaceDriverUnlock(driver);
|
|
return ret;
|
|
}
|
|
|
|
static int interfaceChangeRollback(virConnectPtr conn, unsigned int flags)
|
|
{
|
|
struct interface_driver *driver = conn->interfacePrivateData;
|
|
int ret;
|
|
|
|
virCheckFlags(0, -1); /* currently flags must be 0 */
|
|
|
|
interfaceDriverLock(driver);
|
|
|
|
ret = ncf_change_rollback(driver->netcf, 0);
|
|
if (ret < 0) {
|
|
const char *errmsg, *details;
|
|
int errcode = ncf_error(driver->netcf, &errmsg, &details);
|
|
interfaceReportError(netcf_to_vir_err(errcode),
|
|
_("failed to rollback transaction: %s%s%s"),
|
|
errmsg, details ? " - " : "",
|
|
details ? details : "");
|
|
}
|
|
|
|
interfaceDriverUnlock(driver);
|
|
return ret;
|
|
}
|
|
#endif /* HAVE_NETCF_TRANSACTIONS */
|
|
|
|
static virInterfaceDriver interfaceDriver = {
|
|
"Interface",
|
|
.open = interfaceOpenInterface, /* 0.7.0 */
|
|
.close = interfaceCloseInterface, /* 0.7.0 */
|
|
.numOfInterfaces = interfaceNumOfInterfaces, /* 0.7.0 */
|
|
.listInterfaces = interfaceListInterfaces, /* 0.7.0 */
|
|
.numOfDefinedInterfaces = interfaceNumOfDefinedInterfaces, /* 0.7.0 */
|
|
.listDefinedInterfaces = interfaceListDefinedInterfaces, /* 0.7.0 */
|
|
.interfaceLookupByName = interfaceLookupByName, /* 0.7.0 */
|
|
.interfaceLookupByMACString = interfaceLookupByMACString, /* 0.7.0 */
|
|
.interfaceGetXMLDesc = interfaceGetXMLDesc, /* 0.7.0 */
|
|
.interfaceDefineXML = interfaceDefineXML, /* 0.7.0 */
|
|
.interfaceUndefine = interfaceUndefine, /* 0.7.0 */
|
|
.interfaceCreate = interfaceCreate, /* 0.7.0 */
|
|
.interfaceDestroy = interfaceDestroy, /* 0.7.0 */
|
|
.interfaceIsActive = interfaceIsActive, /* 0.7.3 */
|
|
#ifdef HAVE_NETCF_TRANSACTIONS
|
|
.interfaceChangeBegin = interfaceChangeBegin, /* 0.9.2 */
|
|
.interfaceChangeCommit = interfaceChangeCommit, /* 0.9.2 */
|
|
.interfaceChangeRollback = interfaceChangeRollback, /* 0.9.2 */
|
|
#endif /* HAVE_NETCF_TRANSACTIONS */
|
|
};
|
|
|
|
int interfaceRegister(void) {
|
|
virRegisterInterfaceDriver(&interfaceDriver);
|
|
return 0;
|
|
}
|