libvirt/src/remote/remote_driver.c

/*
 * remote_driver.c: driver to provide access to libvirtd running
 *   on a remote machine
 *
 * Copyright (C) 2007-2011 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, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 *
 * Author: Richard Jones <rjones@redhat.com>
 */

#include <config.h>

#include <unistd.h>
#include <assert.h>

#include <libxml/uri.h>

#include "virnetclient.h"
#include "virnetclientprogram.h"
#include "virnetclientstream.h"
#include "virterror_internal.h"
#include "logging.h"
#include "datatypes.h"
#include "domain_event.h"
#include "driver.h"
#include "buf.h"
#include "qparams.h"
#include "remote_driver.h"
#include "remote_protocol.h"
#include "qemu_protocol.h"
#include "memory.h"
#include "util.h"
#include "virfile.h"
#include "command.h"
#include "intprops.h"

#define VIR_FROM_THIS VIR_FROM_REMOTE

#if SIZEOF_LONG < 8
# define HYPER_TO_TYPE(_type, _to, _from)                                     \
    do {                                                                      \
        if ((_from) != (_type)(_from)) {                                      \
            remoteError(VIR_ERR_INTERNAL_ERROR,                               \
                        _("conversion from hyper to %s overflowed"), #_type); \
            goto done;                                                        \
        }                                                                     \
        (_to) = (_from);                                                      \
    } while (0)

# define HYPER_TO_LONG(_to, _from) HYPER_TO_TYPE(long, _to, _from)
# define HYPER_TO_ULONG(_to, _from) HYPER_TO_TYPE(unsigned long, _to, _from)
#else
# define HYPER_TO_LONG(_to, _from) (_to) = (_from)
# define HYPER_TO_ULONG(_to, _from) (_to) = (_from)
#endif

static int inside_daemon = 0;

struct private_data {
    virMutex lock;

    virNetClientPtr client;
    virNetClientProgramPtr remoteProgram;
    virNetClientProgramPtr qemuProgram;

    int counter; /* Serial number for RPC */

    virNetTLSContextPtr tls;

    int is_secure;              /* Secure if TLS or SASL or UNIX sockets */
    char *type;                 /* Cached return from remoteType. */
    int localUses;              /* Ref count for private data */
    char *hostname;             /* Original hostname */

    virDomainEventStatePtr domainEventState;
};

enum {
    REMOTE_CALL_QEMU              = (1 << 0),
};


static void remoteDriverLock(struct private_data *driver)
{
    virMutexLock(&driver->lock);
}

static void remoteDriverUnlock(struct private_data *driver)
{
    virMutexUnlock(&driver->lock);
}

static int call (virConnectPtr conn, struct private_data *priv,
                 unsigned int flags, int proc_nr,
                 xdrproc_t args_filter, char *args,
                 xdrproc_t ret_filter, char *ret);
static int remoteAuthenticate (virConnectPtr conn, struct private_data *priv,
                               virConnectAuthPtr auth, const char *authtype);
#if HAVE_SASL
static int remoteAuthSASL (virConnectPtr conn, struct private_data *priv,
                           virConnectAuthPtr auth, const char *mech);
#endif
#if HAVE_POLKIT
static int remoteAuthPolkit (virConnectPtr conn, struct private_data *priv,
                             virConnectAuthPtr auth);
#endif /* HAVE_POLKIT */

#define remoteError(code, ...)                                    \
    virReportErrorHelper(VIR_FROM_REMOTE, code, __FILE__,         \
                         __FUNCTION__, __LINE__, __VA_ARGS__)

static virDomainPtr get_nonnull_domain (virConnectPtr conn, remote_nonnull_domain domain);
static virNetworkPtr get_nonnull_network (virConnectPtr conn, remote_nonnull_network network);
static virNWFilterPtr get_nonnull_nwfilter (virConnectPtr conn, remote_nonnull_nwfilter nwfilter);
static virInterfacePtr get_nonnull_interface (virConnectPtr conn, remote_nonnull_interface iface);
static virStoragePoolPtr get_nonnull_storage_pool (virConnectPtr conn, remote_nonnull_storage_pool pool);
static virStorageVolPtr get_nonnull_storage_vol (virConnectPtr conn, remote_nonnull_storage_vol vol);
static virNodeDevicePtr get_nonnull_node_device (virConnectPtr conn, remote_nonnull_node_device dev);
static virSecretPtr get_nonnull_secret (virConnectPtr conn, remote_nonnull_secret secret);
static virDomainSnapshotPtr get_nonnull_domain_snapshot (virDomainPtr domain, remote_nonnull_domain_snapshot snapshot);
static void make_nonnull_domain (remote_nonnull_domain *dom_dst, virDomainPtr dom_src);
static void make_nonnull_network (remote_nonnull_network *net_dst, virNetworkPtr net_src);
static void make_nonnull_interface (remote_nonnull_interface *interface_dst, virInterfacePtr interface_src);
static void make_nonnull_storage_pool (remote_nonnull_storage_pool *pool_dst, virStoragePoolPtr vol_src);
static void make_nonnull_storage_vol (remote_nonnull_storage_vol *vol_dst, virStorageVolPtr vol_src);
static void make_nonnull_secret (remote_nonnull_secret *secret_dst, virSecretPtr secret_src);
static void make_nonnull_nwfilter (remote_nonnull_nwfilter *nwfilter_dst, virNWFilterPtr nwfilter_src);
static void make_nonnull_domain_snapshot (remote_nonnull_domain_snapshot *snapshot_dst, virDomainSnapshotPtr snapshot_src);
static void remoteDomainEventQueueFlush(int timer, void *opaque);
static void remoteDomainEventQueue(struct private_data *priv, virDomainEventPtr event);
/*----------------------------------------------------------------------*/

/* Helper functions for remoteOpen. */
static char *get_transport_from_scheme (char *scheme);

#ifdef WITH_LIBVIRTD
static int
remoteStartup(int privileged ATTRIBUTE_UNUSED)
{
    /* Mark that we're inside the daemon so we can avoid
     * re-entering ourselves
     */
    inside_daemon = 1;
    return 0;
}
#endif

#ifndef WIN32
/**
 * remoteFindDaemonPath:
 *
 * Tries to find the path to the libvirtd binary.
 *
 * Returns path on success or NULL in case of error.
 */
static const char *
remoteFindDaemonPath(void)
{
    static const char *serverPaths[] = {
        SBINDIR "/libvirtd",
        SBINDIR "/libvirtd_dbg",
        NULL
    };
    int i;
    const char *customDaemon = getenv("LIBVIRTD_PATH");

    if (customDaemon)
        return(customDaemon);

    for (i = 0; serverPaths[i]; i++) {
        if (virFileIsExecutable(serverPaths[i])) {
            return serverPaths[i];
        }
    }
    return NULL;
}
#endif


static void
remoteDomainBuildEventLifecycle(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                                virNetClientPtr client ATTRIBUTE_UNUSED,
                                void *evdata, void *opaque);
static void
remoteDomainBuildEventReboot(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                             virNetClientPtr client ATTRIBUTE_UNUSED,
                             void *evdata, void *opaque);
static void
remoteDomainBuildEventRTCChange(virNetClientProgramPtr prog,
                                virNetClientPtr client,
                                void *evdata, void *opaque);
static void
remoteDomainBuildEventWatchdog(virNetClientProgramPtr prog,
                               virNetClientPtr client,
                               void *evdata, void *opaque);
static void
remoteDomainBuildEventIOError(virNetClientProgramPtr prog,
                              virNetClientPtr client,
                              void *evdata, void *opaque);
static void
remoteDomainBuildEventIOErrorReason(virNetClientProgramPtr prog,
                                    virNetClientPtr client,
                                    void *evdata, void *opaque);
static void
remoteDomainBuildEventGraphics(virNetClientProgramPtr prog,
                               virNetClientPtr client,
                               void *evdata, void *opaque);
static void
remoteDomainBuildEventControlError(virNetClientProgramPtr prog,
                                   virNetClientPtr client,
                                   void *evdata, void *opaque);

static virNetClientProgramEvent remoteDomainEvents[] = {
    { REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE,
      remoteDomainBuildEventRTCChange,
      sizeof(remote_domain_event_rtc_change_msg),
      (xdrproc_t)xdr_remote_domain_event_rtc_change_msg },
    { REMOTE_PROC_DOMAIN_EVENT_REBOOT,
      remoteDomainBuildEventReboot,
      sizeof(remote_domain_event_reboot_msg),
      (xdrproc_t)xdr_remote_domain_event_reboot_msg },
    { REMOTE_PROC_DOMAIN_EVENT_LIFECYCLE,
      remoteDomainBuildEventLifecycle,
      sizeof(remote_domain_event_lifecycle_msg),
      (xdrproc_t)xdr_remote_domain_event_lifecycle_msg },
    { REMOTE_PROC_DOMAIN_EVENT_WATCHDOG,
      remoteDomainBuildEventWatchdog,
      sizeof(remote_domain_event_watchdog_msg),
      (xdrproc_t)xdr_remote_domain_event_watchdog_msg},
    { REMOTE_PROC_DOMAIN_EVENT_IO_ERROR,
      remoteDomainBuildEventIOError,
      sizeof(remote_domain_event_io_error_msg),
      (xdrproc_t)xdr_remote_domain_event_io_error_msg },
    { REMOTE_PROC_DOMAIN_EVENT_IO_ERROR_REASON,
      remoteDomainBuildEventIOErrorReason,
      sizeof(remote_domain_event_io_error_reason_msg),
      (xdrproc_t)xdr_remote_domain_event_io_error_reason_msg },
    { REMOTE_PROC_DOMAIN_EVENT_GRAPHICS,
      remoteDomainBuildEventGraphics,
      sizeof(remote_domain_event_graphics_msg),
      (xdrproc_t)xdr_remote_domain_event_graphics_msg },
    { REMOTE_PROC_DOMAIN_EVENT_CONTROL_ERROR,
      remoteDomainBuildEventControlError,
      sizeof(remote_domain_event_control_error_msg),
      (xdrproc_t)xdr_remote_domain_event_control_error_msg },
};

enum virDrvOpenRemoteFlags {
    VIR_DRV_OPEN_REMOTE_RO = (1 << 0),
    VIR_DRV_OPEN_REMOTE_USER      = (1 << 1), /* Use the per-user socket path */
    VIR_DRV_OPEN_REMOTE_AUTOSTART = (1 << 2), /* Autostart a per-user daemon */
};


/*
 * URIs that this driver needs to handle:
 *
 * The easy answer:
 *   - Everything that no one else has yet claimed, but nothing if
 *     we're inside the libvirtd daemon
 *
 * The hard answer:
 *   - Plain paths (///var/lib/xen/xend-socket)  -> UNIX domain socket
 *   - xxx://servername/      -> TLS connection
 *   - xxx+tls://servername/  -> TLS connection
 *   - xxx+tls:///            -> TLS connection to localhost
 *   - xxx+tcp://servername/  -> TCP connection
 *   - xxx+tcp:///            -> TCP connection to localhost
 *   - xxx+unix:///           -> UNIX domain socket
 *   - xxx:///                -> UNIX domain socket
 */
static int
doRemoteOpen (virConnectPtr conn,
              struct private_data *priv,
              virConnectAuthPtr auth ATTRIBUTE_UNUSED,
              unsigned int flags)
{
    struct qparam_set *vars = NULL;
    char *transport_str = NULL;
    enum {
        trans_tls,
        trans_unix,
        trans_ssh,
        trans_ext,
        trans_tcp,
    } transport;

    /* We handle *ALL*  URIs here. The caller has rejected any
     * URIs we don't care about */

    if (conn->uri) {
        if (!conn->uri->scheme) {
            /* This is the ///var/lib/xen/xend-socket local path style */
            transport = trans_unix;
        } else {
            transport_str = get_transport_from_scheme (conn->uri->scheme);

            if (!transport_str) {
                if (conn->uri->server)
                    transport = trans_tls;
                else
                    transport = trans_unix;
            } else {
                if (STRCASEEQ (transport_str, "tls"))
                    transport = trans_tls;
                else if (STRCASEEQ (transport_str, "unix"))
                    transport = trans_unix;
                else if (STRCASEEQ (transport_str, "ssh"))
                    transport = trans_ssh;
                else if (STRCASEEQ (transport_str, "ext"))
                    transport = trans_ext;
                else if (STRCASEEQ (transport_str, "tcp"))
                    transport = trans_tcp;
                else {
                    remoteError(VIR_ERR_INVALID_ARG, "%s",
                                _("remote_open: transport in URL not recognised "
                                  "(should be tls|unix|ssh|ext|tcp)"));
                    return VIR_DRV_OPEN_ERROR;
                }
            }
        }
    } else {
        /* No URI, then must be probing so use UNIX socket */
        transport = trans_unix;
    }

    /* Local variables which we will initialize. These can
     * get freed in the failed: path.
     */
    char *name = NULL, *command = NULL, *sockname = NULL, *netcat = NULL;
    char *port = NULL, *authtype = NULL, *username = NULL;
    int no_verify = 0, no_tty = 0;
    char *pkipath = NULL;

    /* Return code from this function, and the private data. */
    int retcode = VIR_DRV_OPEN_ERROR;

    /* Remote server defaults to "localhost" if not specified. */
    if (conn->uri && conn->uri->port != 0) {
        if (virAsprintf(&port, "%d", conn->uri->port) == -1) goto out_of_memory;
    } else if (transport == trans_tls) {
        port = strdup (LIBVIRTD_TLS_PORT);
        if (!port) goto out_of_memory;
    } else if (transport == trans_tcp) {
        port = strdup (LIBVIRTD_TCP_PORT);
        if (!port) goto out_of_memory;
    } else
        port = NULL; /* Port not used for unix, ext., default for ssh */


    priv->hostname = strdup (conn->uri && conn->uri->server ?
                             conn->uri->server : "localhost");
    if (!priv->hostname)
        goto out_of_memory;
    if (conn->uri && conn->uri->user) {
        username = strdup (conn->uri->user);
        if (!username)
            goto out_of_memory;
    }

    /* Get the variables from the query string.
     * Then we need to reconstruct the query string (because
     * feasibly it might contain variables needed by the real driver,
     * although that won't be the case for now).
     */
    struct qparam *var;
    int i;
    char *query;

    if (conn->uri) {
#ifdef HAVE_XMLURI_QUERY_RAW
        query = conn->uri->query_raw;
#else
        query = conn->uri->query;
#endif
        vars = qparam_query_parse (query);
        if (vars == NULL) goto failed;

        for (i = 0; i < vars->n; i++) {
            var = &vars->p[i];
            if (STRCASEEQ (var->name, "name")) {
                VIR_FREE(name);
                name = strdup (var->value);
                if (!name) goto out_of_memory;
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "command")) {
                VIR_FREE(command);
                command = strdup (var->value);
                if (!command) goto out_of_memory;
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "socket")) {
                VIR_FREE(sockname);
                sockname = strdup (var->value);
                if (!sockname) goto out_of_memory;
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "auth")) {
                VIR_FREE(authtype);
                authtype = strdup (var->value);
                if (!authtype) goto out_of_memory;
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "netcat")) {
                VIR_FREE(netcat);
                netcat = strdup (var->value);
                if (!netcat) goto out_of_memory;
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "no_verify")) {
                no_verify = atoi (var->value);
                var->ignore = 1;
            } else if (STRCASEEQ (var->name, "no_tty")) {
                no_tty = atoi (var->value);
                var->ignore = 1;
            } else if (STRCASEEQ(var->name, "pkipath")) {
                VIR_FREE(pkipath);
                pkipath = strdup(var->value);
                if (!pkipath) goto out_of_memory;
                var->ignore = 1;
            } else {
                VIR_DEBUG("passing through variable '%s' ('%s') to remote end",
                      var->name, var->value);
            }
        }

        /* Construct the original name. */
        if (!name) {
            if (conn->uri->scheme &&
                (STREQ(conn->uri->scheme, "remote") ||
                 STRPREFIX(conn->uri->scheme, "remote+"))) {
                /* Allow remote serve to probe */
                name = strdup("");
            } else {
                xmlURI tmpuri = {
                    .scheme = conn->uri->scheme,
#ifdef HAVE_XMLURI_QUERY_RAW
                    .query_raw = qparam_get_query (vars),
#else
                    .query = qparam_get_query (vars),
#endif
                    .path = conn->uri->path,
                    .fragment = conn->uri->fragment,
                };

                /* Evil, blank out transport scheme temporarily */
                if (transport_str) {
                    assert (transport_str[-1] == '+');
                    transport_str[-1] = '\0';
                }

                name = (char *) xmlSaveUri (&tmpuri);

#ifdef HAVE_XMLURI_QUERY_RAW
                VIR_FREE(tmpuri.query_raw);
#else
                VIR_FREE(tmpuri.query);
#endif

                /* Restore transport scheme */
                if (transport_str)
                    transport_str[-1] = '+';
            }
        }

        free_qparam_set (vars);
        vars = NULL;
    } else {
        /* Probe URI server side */
        name = strdup("");
    }

    if (!name) {
        virReportOOMError();
        goto failed;
    }

    VIR_DEBUG("proceeding with name = %s", name);

    /* For ext transport, command is required. */
    if (transport == trans_ext && !command) {
        remoteError(VIR_ERR_INVALID_ARG, "%s",
                    _("remote_open: for 'ext' transport, command is required"));
        goto failed;
    }


    VIR_DEBUG("Connecting with transport %d", transport);
    /* Connect to the remote service. */
    switch (transport) {
    case trans_tls:
        priv->tls = virNetTLSContextNewClientPath(pkipath,
                                                  geteuid() != 0 ? true : false,
                                                  no_verify ? false : true);
        if (!priv->tls)
            goto failed;
        priv->is_secure = 1;

        /*FALLTHROUGH*/
    case trans_tcp:
        priv->client = virNetClientNewTCP(priv->hostname, port);
        if (!priv->client)
            goto failed;

        if (priv->tls) {
            VIR_DEBUG("Starting TLS session");
            if (virNetClientSetTLSSession(priv->client, priv->tls) < 0)
                goto failed;
        }

        break;

#ifndef WIN32
    case trans_unix:
        if (!sockname) {
            if (flags & VIR_DRV_OPEN_REMOTE_USER) {
                char *userdir = virGetUserDirectory(getuid());

                if (!userdir)
                    goto failed;

                if (virAsprintf(&sockname, "@%s" LIBVIRTD_USER_UNIX_SOCKET, userdir) < 0) {
                    VIR_FREE(userdir);
                    goto out_of_memory;
                }
                VIR_FREE(userdir);
            } else {
                if (flags & VIR_DRV_OPEN_REMOTE_RO)
                    sockname = strdup(LIBVIRTD_PRIV_UNIX_SOCKET_RO);
                else
                    sockname = strdup(LIBVIRTD_PRIV_UNIX_SOCKET);
                if (sockname == NULL)
                    goto out_of_memory;
            }
            VIR_DEBUG("Proceeding with sockname %s", sockname);
        }

        if (!(priv->client = virNetClientNewUNIX(sockname,
                                                 flags & VIR_DRV_OPEN_REMOTE_AUTOSTART,
                                                 remoteFindDaemonPath())))
            goto failed;

        priv->is_secure = 1;
        break;

    case trans_ssh:
        command = command ? command : strdup ("ssh");
        if (command == NULL)
            goto out_of_memory;

        if (!sockname) {
            if (flags & VIR_DRV_OPEN_REMOTE_RO)
                sockname = strdup(LIBVIRTD_PRIV_UNIX_SOCKET_RO);
            else
                sockname = strdup(LIBVIRTD_PRIV_UNIX_SOCKET);
            if (sockname == NULL)
                goto out_of_memory;
        }

        if (!(priv->client = virNetClientNewSSH(priv->hostname,
                                                port,
                                                command,
                                                username,
                                                no_tty,
                                                no_verify,
                                                netcat ? netcat : "nc",
                                                sockname)))
            goto failed;

        priv->is_secure = 1;
        break;

    case trans_ext: {
        char const *cmd_argv[] = { command, NULL };
        if (!(priv->client = virNetClientNewExternal(cmd_argv)))
            goto failed;

        /* Do not set 'is_secure' flag since we can't guarantee
         * an external program is secure, and this flag must be
         * pessimistic */
    }   break;

#else /* WIN32 */

    case trans_unix:
    case trans_ssh:
    case trans_ext:
        remoteError(VIR_ERR_INVALID_ARG, "%s",
                    _("transport methods unix, ssh and ext are not supported "
                      "under Windows"));
        goto failed;

#endif /* WIN32 */
    } /* switch (transport) */

    if (!(priv->remoteProgram = virNetClientProgramNew(REMOTE_PROGRAM,
                                                       REMOTE_PROTOCOL_VERSION,
                                                       remoteDomainEvents,
                                                       ARRAY_CARDINALITY(remoteDomainEvents),
                                                       conn)))
        goto failed;
    if (!(priv->qemuProgram = virNetClientProgramNew(QEMU_PROGRAM,
                                                     QEMU_PROTOCOL_VERSION,
                                                     NULL,
                                                     0,
                                                     NULL)))
        goto failed;

    if (virNetClientAddProgram(priv->client, priv->remoteProgram) < 0 ||
        virNetClientAddProgram(priv->client, priv->qemuProgram) < 0)
        goto failed;

    /* Try and authenticate with server */
    VIR_DEBUG("Trying authentication");
    if (remoteAuthenticate(conn, priv, auth, authtype) == -1)
        goto failed;

    /* Finally we can call the remote side's open function. */
    {
        remote_open_args args = { &name, flags };

        VIR_DEBUG("Trying to open URI %s", name);
        if (call (conn, priv, 0, REMOTE_PROC_OPEN,
                  (xdrproc_t) xdr_remote_open_args, (char *) &args,
                  (xdrproc_t) xdr_void, (char *) NULL) == -1)
            goto failed;
    }

    /* Now try and find out what URI the daemon used */
    if (conn->uri == NULL) {
        remote_get_uri_ret uriret;

        VIR_DEBUG("Trying to query remote URI");
        memset (&uriret, 0, sizeof uriret);
        if (call (conn, priv, 0,
                  REMOTE_PROC_GET_URI,
                  (xdrproc_t) xdr_void, (char *) NULL,
                  (xdrproc_t) xdr_remote_get_uri_ret, (char *) &uriret) < 0)
            goto failed;

        VIR_DEBUG("Auto-probed URI is %s", uriret.uri);
        conn->uri = xmlParseURI(uriret.uri);
        VIR_FREE(uriret.uri);
        if (!conn->uri) {
            virReportOOMError();
            goto failed;
        }
    }

    if (!(priv->domainEventState = virDomainEventStateNew(remoteDomainEventQueueFlush,
                                                          conn,
                                                          NULL,
                                                          false)))
        goto failed;

    /* Successful. */
    retcode = VIR_DRV_OPEN_SUCCESS;

 cleanup:
    /* Free up the URL and strings. */
    VIR_FREE(name);
    VIR_FREE(command);
    VIR_FREE(sockname);
    VIR_FREE(authtype);
    VIR_FREE(netcat);
    VIR_FREE(username);
    VIR_FREE(port);
    VIR_FREE(pkipath);

    return retcode;

 out_of_memory:
    virReportOOMError();
    if (vars)
        free_qparam_set (vars);

 failed:
    virNetClientClose(priv->client);
    virNetClientFree(priv->client);
    priv->client = NULL;

    VIR_FREE(priv->hostname);
    goto cleanup;
}

static struct private_data *
remoteAllocPrivateData(void)
{
    struct private_data *priv;
    if (VIR_ALLOC(priv) < 0) {
        virReportOOMError();
        return NULL;
    }

    if (virMutexInit(&priv->lock) < 0) {
        remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                    _("cannot initialize mutex"));
        VIR_FREE(priv);
        return NULL;
    }
    remoteDriverLock(priv);
    priv->localUses = 1;

    return priv;
}

static int
remoteOpenSecondaryDriver(virConnectPtr conn,
                          virConnectAuthPtr auth,
                          unsigned int flags,
                          struct private_data **priv)
{
    int ret;
    int rflags = 0;

    if (!((*priv) = remoteAllocPrivateData()))
        return VIR_DRV_OPEN_ERROR;

    if (flags & VIR_CONNECT_RO)
        rflags |= VIR_DRV_OPEN_REMOTE_RO;

    ret = doRemoteOpen(conn, *priv, auth, rflags);
    if (ret != VIR_DRV_OPEN_SUCCESS) {
        remoteDriverUnlock(*priv);
        VIR_FREE(*priv);
    } else {
        (*priv)->localUses = 1;
        remoteDriverUnlock(*priv);
    }

    return ret;
}

static virDrvOpenStatus
remoteOpen (virConnectPtr conn,
            virConnectAuthPtr auth,
            unsigned int flags)
{
    struct private_data *priv;
    int ret, rflags = 0;
    const char *autostart = getenv("LIBVIRT_AUTOSTART");

    if (inside_daemon && (!conn->uri || (conn->uri && !conn->uri->server)))
        return VIR_DRV_OPEN_DECLINED;

    if (!(priv = remoteAllocPrivateData()))
        return VIR_DRV_OPEN_ERROR;

    if (flags & VIR_CONNECT_RO)
        rflags |= VIR_DRV_OPEN_REMOTE_RO;

    /*
     * If no servername is given, and no +XXX
     * transport is listed, or transport is unix,
     * and path is /session, and uid is unprivileged
     * then auto-spawn a daemon.
     */
    if (conn->uri &&
        !conn->uri->server &&
        conn->uri->path &&
        conn->uri->scheme &&
        ((strchr(conn->uri->scheme, '+') == 0)||
         (strstr(conn->uri->scheme, "+unix") != NULL)) &&
        (STREQ(conn->uri->path, "/session") ||
         STRPREFIX(conn->uri->scheme, "test+")) &&
        getuid() > 0) {
        VIR_DEBUG("Auto-spawn user daemon instance");
        rflags |= VIR_DRV_OPEN_REMOTE_USER;
        if (!autostart ||
            STRNEQ(autostart, "0"))
            rflags |= VIR_DRV_OPEN_REMOTE_AUTOSTART;
    }

    /*
     * If URI is NULL, then do a UNIX connection possibly auto-spawning
     * unprivileged server and probe remote server for URI. On Solaris,
     * this isn't supported, but we may be privileged enough to connect
     * to the UNIX socket anyway.
     */
    if (!conn->uri) {
        VIR_DEBUG("Auto-probe remote URI");
#ifndef __sun
        if (getuid() > 0) {
            VIR_DEBUG("Auto-spawn user daemon instance");
            rflags |= VIR_DRV_OPEN_REMOTE_USER;
            if (!autostart ||
                STRNEQ(autostart, "0"))
                rflags |= VIR_DRV_OPEN_REMOTE_AUTOSTART;
        }
#endif
    }

    ret = doRemoteOpen(conn, priv, auth, rflags);
    if (ret != VIR_DRV_OPEN_SUCCESS) {
        conn->privateData = NULL;
        remoteDriverUnlock(priv);
        VIR_FREE(priv);
    } else {
        conn->privateData = priv;
        remoteDriverUnlock(priv);
    }
    return ret;
}


/* In a string "driver+transport" return a pointer to "transport". */
static char *
get_transport_from_scheme (char *scheme)
{
    char *p = strchr (scheme, '+');
    return p ? p+1 : 0;
}

/*----------------------------------------------------------------------*/


static int
doRemoteClose (virConnectPtr conn, struct private_data *priv)
{
    int ret = 0;

    if (call (conn, priv, 0, REMOTE_PROC_CLOSE,
              (xdrproc_t) xdr_void, (char *) NULL,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        ret = -1;

    virNetTLSContextFree(priv->tls);
    priv->tls = NULL;
    virNetClientClose(priv->client);
    virNetClientFree(priv->client);
    priv->client = NULL;
    virNetClientProgramFree(priv->remoteProgram);
    virNetClientProgramFree(priv->qemuProgram);
    priv->remoteProgram = priv->qemuProgram = NULL;

    /* Free hostname copy */
    VIR_FREE(priv->hostname);

    /* See comment for remoteType. */
    VIR_FREE(priv->type);

    virDomainEventStateFree(priv->domainEventState);
    priv->domainEventState = NULL;

    return ret;
}

static int
remoteClose (virConnectPtr conn)
{
    int ret = 0;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);
    priv->localUses--;
    if (!priv->localUses) {
        ret = doRemoteClose(conn, priv);
        conn->privateData = NULL;
        remoteDriverUnlock(priv);
        virMutexDestroy(&priv->lock);
        VIR_FREE (priv);
    }
    if (priv)
        remoteDriverUnlock(priv);

    return ret;
}


/* Unfortunately this function is defined to return a static string.
 * Since the remote end always answers with the same type (for a
 * single connection anyway) we cache the type in the connection's
 * private data, and free it when we close the connection.
 *
 * See also:
 * http://www.redhat.com/archives/libvir-list/2007-February/msg00096.html
 */
static const char *
remoteType (virConnectPtr conn)
{
    char *rv = NULL;
    remote_get_type_ret ret;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    /* Cached? */
    if (priv->type) {
        rv = priv->type;
        goto done;
    }

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_GET_TYPE,
              (xdrproc_t) xdr_void, (char *) NULL,
              (xdrproc_t) xdr_remote_get_type_ret, (char *) &ret) == -1)
        goto done;

    /* Stash. */
    rv = priv->type = ret.type;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int remoteIsSecure(virConnectPtr conn)
{
    int rv = -1;
    struct private_data *priv = conn->privateData;
    remote_is_secure_ret ret;
    remoteDriverLock(priv);

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_IS_SECURE,
              (xdrproc_t) xdr_void, (char *) NULL,
              (xdrproc_t) xdr_remote_is_secure_ret, (char *) &ret) == -1)
        goto done;

    /* We claim to be secure, if the remote driver
     * transport itself is secure, and the remote
     * HV connection is secure
     *
     * ie, we don't want to claim to be secure if the
     * remote driver is used to connect to a XenD
     * driver using unencrypted HTTP:/// access
     */
    rv = priv->is_secure && ret.secure ? 1 : 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int remoteIsEncrypted(virConnectPtr conn)
{
    int rv = -1;
    int encrypted = 0;
    struct private_data *priv = conn->privateData;
    remote_is_secure_ret ret;
    remoteDriverLock(priv);

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_IS_SECURE,
              (xdrproc_t) xdr_void, (char *) NULL,
              (xdrproc_t) xdr_remote_is_secure_ret, (char *) &ret) == -1)
        goto done;

    if (virNetClientIsEncrypted(priv->client))
        encrypted = 1;

    /* We claim to be encrypted, if the remote driver
     * transport itself is encrypted, and the remote
     * HV connection is secure.
     *
     * Yes, we really don't check the remote 'encrypted'
     * option, since it will almost always be false,
     * even if secure (eg UNIX sockets).
     */
    rv = encrypted && ret.secure ? 1 : 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeGetCPUStats (virConnectPtr conn,
                       int cpuNum,
                       virNodeCPUStatsPtr params, int *nparams,
                       unsigned int flags)
{
    int rv = -1;
    remote_node_get_cpu_stats_args args;
    remote_node_get_cpu_stats_ret ret;
    int i = -1;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    args.nparams = *nparams;
    args.cpuNum = cpuNum;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_NODE_GET_CPU_STATS,
              (xdrproc_t) xdr_remote_node_get_cpu_stats_args,
              (char *) &args,
              (xdrproc_t) xdr_remote_node_get_cpu_stats_ret,
              (char *) &ret) == -1)
        goto done;

    /* Check the length of the returned list carefully. */
    if (ret.params.params_len > REMOTE_NODE_CPU_STATS_MAX ||
        ret.params.params_len > *nparams) {
        remoteError(VIR_ERR_RPC, "%s",
                    _("remoteNodeGetCPUStats: "
                      "returned number of stats exceeds limit"));
        goto cleanup;
    }
    /* Handle the case when the caller does not know the number of stats
     * and is asking for the number of stats supported
     */
    if (*nparams == 0) {
        *nparams = ret.nparams;
        rv = 0;
        goto cleanup;
    }

    *nparams = ret.params.params_len;

    /* Deserialise the result. */
    for (i = 0; i < *nparams; ++i) {
        if (virStrcpyStatic(params[i].field, ret.params.params_val[i].field) == NULL) {
            remoteError(VIR_ERR_INTERNAL_ERROR,
                        _("Stats %s too big for destination"),
                        ret.params.params_val[i].field);
            goto cleanup;
        }
        params[i].value = ret.params.params_val[i].value;
    }

    rv = 0;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_node_get_cpu_stats_ret,
              (char *) &ret);
done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeGetMemoryStats (virConnectPtr conn,
                          int cellNum,
                          virNodeMemoryStatsPtr params, int *nparams,
                          unsigned int flags)
{
    int rv = -1;
    remote_node_get_memory_stats_args args;
    remote_node_get_memory_stats_ret ret;
    int i = -1;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    args.nparams = *nparams;
    args.cellNum = cellNum;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_NODE_GET_MEMORY_STATS,
              (xdrproc_t) xdr_remote_node_get_memory_stats_args, (char *) &args,
              (xdrproc_t) xdr_remote_node_get_memory_stats_ret, (char *) &ret) == -1)
        goto done;

    /* Check the length of the returned list carefully. */
    if (ret.params.params_len > REMOTE_NODE_MEMORY_STATS_MAX ||
        ret.params.params_len > *nparams) {
        remoteError(VIR_ERR_RPC, "%s",
                    _("remoteNodeGetMemoryStats: "
                      "returned number of stats exceeds limit"));
        goto cleanup;
    }
    /* Handle the case when the caller does not know the number of stats
     * and is asking for the number of stats supported
     */
    if (*nparams == 0) {
        *nparams = ret.nparams;
        rv = 0;
        goto cleanup;
    }

    *nparams = ret.params.params_len;

    /* Deserialise the result. */
    for (i = 0; i < *nparams; ++i) {
        if (virStrcpyStatic(params[i].field, ret.params.params_val[i].field) == NULL) {
            remoteError(VIR_ERR_INTERNAL_ERROR,
                        _("Stats %s too big for destination"),
                        ret.params.params_val[i].field);
            goto cleanup;
        }
        params[i].value = ret.params.params_val[i].value;
    }

    rv = 0;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_node_get_memory_stats_ret,
              (char *) &ret);
done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeGetCellsFreeMemory(virConnectPtr conn,
                            unsigned long long *freeMems,
                            int startCell,
                            int maxCells)
{
    int rv = -1;
    remote_node_get_cells_free_memory_args args;
    remote_node_get_cells_free_memory_ret ret;
    int i;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    if (maxCells > REMOTE_NODE_MAX_CELLS) {
        remoteError(VIR_ERR_RPC,
                    _("too many NUMA cells: %d > %d"),
                    maxCells, REMOTE_NODE_MAX_CELLS);
        goto done;
    }

    args.startCell = startCell;
    args.maxcells = maxCells;

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_NODE_GET_CELLS_FREE_MEMORY,
              (xdrproc_t) xdr_remote_node_get_cells_free_memory_args, (char *)&args,
              (xdrproc_t) xdr_remote_node_get_cells_free_memory_ret, (char *)&ret) == -1)
        goto done;

    for (i = 0 ; i < ret.cells.cells_len ; i++)
        freeMems[i] = ret.cells.cells_val[i];

    xdr_free((xdrproc_t) xdr_remote_node_get_cells_free_memory_ret, (char *) &ret);

    rv = ret.cells.cells_len;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteListDomains (virConnectPtr conn, int *ids, int maxids)
{
    int rv = -1;
    int i;
    remote_list_domains_args args;
    remote_list_domains_ret ret;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    if (maxids > REMOTE_DOMAIN_ID_LIST_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("too many remote domain IDs: %d > %d"),
                    maxids, REMOTE_DOMAIN_ID_LIST_MAX);
        goto done;
    }
    args.maxids = maxids;

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_LIST_DOMAINS,
              (xdrproc_t) xdr_remote_list_domains_args, (char *) &args,
              (xdrproc_t) xdr_remote_list_domains_ret, (char *) &ret) == -1)
        goto done;

    if (ret.ids.ids_len > maxids) {
        remoteError(VIR_ERR_RPC,
                    _("too many remote domain IDs: %d > %d"),
                    ret.ids.ids_len, maxids);
        goto cleanup;
    }

    for (i = 0; i < ret.ids.ids_len; ++i)
        ids[i] = ret.ids.ids_val[i];

    rv = ret.ids.ids_len;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_list_domains_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

/* Helper to serialize typed parameters. */
static int
remoteSerializeTypedParameters(virTypedParameterPtr params,
                               int nparams,
                               remote_typed_param **args_params_val,
                               u_int *args_params_len)
{
    int i;
    int rv = -1;
    remote_typed_param *val;

    *args_params_len = nparams;
    if (VIR_ALLOC_N(val, nparams) < 0) {
        virReportOOMError();
        goto cleanup;
    }

    for (i = 0; i < nparams; ++i) {
        /* call() will free this: */
        val[i].field = strdup (params[i].field);
        if (val[i].field == NULL) {
            virReportOOMError();
            goto cleanup;
        }
        val[i].value.type = params[i].type;
        switch (params[i].type) {
        case VIR_TYPED_PARAM_INT:
            val[i].value.remote_typed_param_value_u.i = params[i].value.i;
            break;
        case VIR_TYPED_PARAM_UINT:
            val[i].value.remote_typed_param_value_u.ui = params[i].value.ui;
            break;
        case VIR_TYPED_PARAM_LLONG:
            val[i].value.remote_typed_param_value_u.l = params[i].value.l;
            break;
        case VIR_TYPED_PARAM_ULLONG:
            val[i].value.remote_typed_param_value_u.ul = params[i].value.ul;
            break;
        case VIR_TYPED_PARAM_DOUBLE:
            val[i].value.remote_typed_param_value_u.d = params[i].value.d;
            break;
        case VIR_TYPED_PARAM_BOOLEAN:
            val[i].value.remote_typed_param_value_u.b = params[i].value.b;
            break;
        default:
            remoteError(VIR_ERR_RPC, _("unknown parameter type: %d"),
                params[i].type);
            goto cleanup;
        }
    }

    *args_params_val = val;
    val = NULL;
    rv = 0;

cleanup:
    if (val) {
        for (i = 0; i < nparams; i++)
            VIR_FREE(val[i].field);
        VIR_FREE(val);
    }
    return rv;
}

/* Helper to deserialize typed parameters. */
static int
remoteDeserializeTypedParameters(remote_typed_param *ret_params_val,
                                 u_int ret_params_len,
                                 int limit,
                                 virTypedParameterPtr params,
                                 int *nparams)
{
    int i;
    int rv = -1;

    /* Check the length of the returned list carefully. */
    if (ret_params_len > limit || ret_params_len > *nparams) {
        remoteError(VIR_ERR_RPC, "%s",
                    _("returned number of parameters exceeds limit"));
        goto cleanup;
    }

    *nparams = ret_params_len;

    /* Deserialise the result. */
    for (i = 0; i < ret_params_len; ++i) {
        if (virStrcpyStatic(params[i].field,
                            ret_params_val[i].field) == NULL) {
            remoteError(VIR_ERR_INTERNAL_ERROR,
                        _("Parameter %s too big for destination"),
                        ret_params_val[i].field);
            goto cleanup;
        }
        params[i].type = ret_params_val[i].value.type;
        switch (params[i].type) {
        case VIR_TYPED_PARAM_INT:
            params[i].value.i =
                ret_params_val[i].value.remote_typed_param_value_u.i;
            break;
        case VIR_TYPED_PARAM_UINT:
            params[i].value.ui =
                ret_params_val[i].value.remote_typed_param_value_u.ui;
            break;
        case VIR_TYPED_PARAM_LLONG:
            params[i].value.l =
                ret_params_val[i].value.remote_typed_param_value_u.l;
            break;
        case VIR_TYPED_PARAM_ULLONG:
            params[i].value.ul =
                ret_params_val[i].value.remote_typed_param_value_u.ul;
            break;
        case VIR_TYPED_PARAM_DOUBLE:
            params[i].value.d =
                ret_params_val[i].value.remote_typed_param_value_u.d;
            break;
        case VIR_TYPED_PARAM_BOOLEAN:
            params[i].value.b =
                ret_params_val[i].value.remote_typed_param_value_u.b;
            break;
        default:
            remoteError(VIR_ERR_RPC, _("unknown parameter type: %d"),
                        params[i].type);
            goto cleanup;
        }
    }

    rv = 0;

cleanup:
    return rv;
}

static int
remoteDomainGetMemoryParameters (virDomainPtr domain,
                                 virTypedParameterPtr params, int *nparams,
                                 unsigned int flags)
{
    int rv = -1;
    remote_domain_get_memory_parameters_args args;
    remote_domain_get_memory_parameters_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);
    args.nparams = *nparams;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_MEMORY_PARAMETERS,
              (xdrproc_t) xdr_remote_domain_get_memory_parameters_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_get_memory_parameters_ret, (char *) &ret) == -1)
        goto done;

    /* Handle the case when the caller does not know the number of parameters
     * and is asking for the number of parameters supported
     */
    if (*nparams == 0) {
        *nparams = ret.nparams;
        rv = 0;
        goto cleanup;
    }

    if (remoteDeserializeTypedParameters(ret.params.params_val,
                                         ret.params.params_len,
                                         REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX,
                                         params,
                                         nparams) < 0)
        goto cleanup;

    rv = 0;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_domain_get_memory_parameters_ret,
              (char *) &ret);
done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainGetBlkioParameters (virDomainPtr domain,
                                virTypedParameterPtr params, int *nparams,
                                unsigned int flags)
{
    int rv = -1;
    remote_domain_get_blkio_parameters_args args;
    remote_domain_get_blkio_parameters_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);
    args.nparams = *nparams;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_BLKIO_PARAMETERS,
              (xdrproc_t) xdr_remote_domain_get_blkio_parameters_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_get_blkio_parameters_ret, (char *) &ret) == -1)
        goto done;

    /* Handle the case when the caller does not know the number of parameters
     * and is asking for the number of parameters supported
     */
    if (*nparams == 0) {
        *nparams = ret.nparams;
        rv = 0;
        goto cleanup;
    }

    if (remoteDeserializeTypedParameters(ret.params.params_val,
                                         ret.params.params_len,
                                         REMOTE_DOMAIN_BLKIO_PARAMETERS_MAX,
                                         params,
                                         nparams) < 0)
        goto cleanup;

    rv = 0;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_domain_get_blkio_parameters_ret,
              (char *) &ret);
done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainGetVcpuPinInfo (virDomainPtr domain,
                            int ncpumaps,
                            unsigned char *cpumaps,
                            int maplen,
                            unsigned int flags)
{
    int rv = -1;
    int i;
    remote_domain_get_vcpu_pin_info_args args;
    remote_domain_get_vcpu_pin_info_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    if (ncpumaps > REMOTE_VCPUINFO_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("vCPU count exceeds maximum: %d > %d"),
                    ncpumaps, REMOTE_VCPUINFO_MAX);
        goto done;
    }

    if (INT_MULTIPLY_OVERFLOW(ncpumaps, maplen) ||
        ncpumaps * maplen > REMOTE_CPUMAPS_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("vCPU map buffer length exceeds maximum: %d > %d"),
                    ncpumaps * maplen, REMOTE_CPUMAPS_MAX);
        goto done;
    }

    make_nonnull_domain (&args.dom, domain);
    args.ncpumaps = ncpumaps;
    args.maplen = maplen;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_VCPU_PIN_INFO,
              (xdrproc_t) xdr_remote_domain_get_vcpu_pin_info_args,
              (char *) &args,
              (xdrproc_t) xdr_remote_domain_get_vcpu_pin_info_ret,
              (char *) &ret) == -1)
        goto done;

    if (ret.num > ncpumaps) {
        remoteError(VIR_ERR_RPC,
                    _("host reports too many vCPUs: %d > %d"),
                    ret.num, ncpumaps);
        goto cleanup;
    }

    if (ret.cpumaps.cpumaps_len > ncpumaps * maplen) {
        remoteError(VIR_ERR_RPC,
                    _("host reports map buffer length exceeds maximum: %d > %d"),
                    ret.cpumaps.cpumaps_len, ncpumaps * maplen);
        goto cleanup;
    }

    memset (cpumaps, 0, ncpumaps * maplen);

    for (i = 0; i < ret.cpumaps.cpumaps_len; ++i)
        cpumaps[i] = ret.cpumaps.cpumaps_val[i];

    rv = ret.num;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_domain_get_vcpu_pin_info_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainGetVcpus (virDomainPtr domain,
                      virVcpuInfoPtr info,
                      int maxinfo,
                      unsigned char *cpumaps,
                      int maplen)
{
    int rv = -1;
    int i;
    remote_domain_get_vcpus_args args;
    remote_domain_get_vcpus_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    if (maxinfo > REMOTE_VCPUINFO_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("vCPU count exceeds maximum: %d > %d"),
                    maxinfo, REMOTE_VCPUINFO_MAX);
        goto done;
    }
    if (INT_MULTIPLY_OVERFLOW(maxinfo, maplen) ||
        maxinfo * maplen > REMOTE_CPUMAPS_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("vCPU map buffer length exceeds maximum: %d > %d"),
                    maxinfo * maplen, REMOTE_CPUMAPS_MAX);
        goto done;
    }

    make_nonnull_domain (&args.dom, domain);
    args.maxinfo = maxinfo;
    args.maplen = maplen;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_VCPUS,
              (xdrproc_t) xdr_remote_domain_get_vcpus_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_get_vcpus_ret, (char *) &ret) == -1)
        goto done;

    if (ret.info.info_len > maxinfo) {
        remoteError(VIR_ERR_RPC,
                    _("host reports too many vCPUs: %d > %d"),
                    ret.info.info_len, maxinfo);
        goto cleanup;
    }
    if (ret.cpumaps.cpumaps_len > maxinfo * maplen) {
        remoteError(VIR_ERR_RPC,
                    _("host reports map buffer length exceeds maximum: %d > %d"),
                    ret.cpumaps.cpumaps_len, maxinfo * maplen);
        goto cleanup;
    }

    memset (info, 0, sizeof (virVcpuInfo) * maxinfo);
    memset (cpumaps, 0, maxinfo * maplen);

    for (i = 0; i < ret.info.info_len; ++i) {
        info[i].number = ret.info.info_val[i].number;
        info[i].state = ret.info.info_val[i].state;
        info[i].cpuTime = ret.info.info_val[i].cpu_time;
        info[i].cpu = ret.info.info_val[i].cpu;
    }

    for (i = 0; i < ret.cpumaps.cpumaps_len; ++i)
        cpumaps[i] = ret.cpumaps.cpumaps_val[i];

    rv = ret.info.info_len;

cleanup:
    xdr_free ((xdrproc_t) xdr_remote_domain_get_vcpus_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainGetSecurityLabel (virDomainPtr domain, virSecurityLabelPtr seclabel)
{
    remote_domain_get_security_label_args args;
    remote_domain_get_security_label_ret ret;
    struct private_data *priv = domain->conn->privateData;
    int rv = -1;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);
    memset (&ret, 0, sizeof ret);
    memset (seclabel, 0, sizeof (*seclabel));

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_SECURITY_LABEL,
              (xdrproc_t) xdr_remote_domain_get_security_label_args, (char *)&args,
              (xdrproc_t) xdr_remote_domain_get_security_label_ret, (char *)&ret) == -1) {
        goto done;
    }

    if (ret.label.label_val != NULL) {
        if (strlen (ret.label.label_val) >= sizeof seclabel->label) {
            remoteError(VIR_ERR_RPC, _("security label exceeds maximum: %zd"),
                        sizeof seclabel->label - 1);
            goto cleanup;
        }
        strcpy (seclabel->label, ret.label.label_val);
        seclabel->enforcing = ret.enforcing;
    }

    rv = 0;

cleanup:
    xdr_free((xdrproc_t) xdr_remote_domain_get_security_label_ret, (char *)&ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainGetState(virDomainPtr domain,
                     int *state,
                     int *reason,
                     unsigned int flags)
{
    int rv = -1;
    remote_domain_get_state_args args;
    remote_domain_get_state_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain(&args.dom, domain);
    args.flags = flags;

    memset(&ret, 0, sizeof ret);
    if (call(domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_STATE,
             (xdrproc_t) xdr_remote_domain_get_state_args, (char *) &args,
             (xdrproc_t) xdr_remote_domain_get_state_ret, (char *) &ret) == -1)
        goto done;

    *state = ret.state;
    if (reason)
        *reason = ret.reason;

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeGetSecurityModel (virConnectPtr conn, virSecurityModelPtr secmodel)
{
    remote_node_get_security_model_ret ret;
    struct private_data *priv = conn->privateData;
    int rv = -1;

    remoteDriverLock(priv);

    memset (&ret, 0, sizeof ret);
    memset (secmodel, 0, sizeof (*secmodel));

    if (call (conn, priv, 0, REMOTE_PROC_NODE_GET_SECURITY_MODEL,
              (xdrproc_t) xdr_void, NULL,
              (xdrproc_t) xdr_remote_node_get_security_model_ret, (char *)&ret) == -1) {
        goto done;
    }

    if (ret.model.model_val != NULL) {
        if (strlen (ret.model.model_val) >= sizeof secmodel->model) {
            remoteError(VIR_ERR_RPC, _("security model exceeds maximum: %zd"),
                        sizeof secmodel->model - 1);
            goto cleanup;
        }
        strcpy (secmodel->model, ret.model.model_val);
    }

    if (ret.doi.doi_val != NULL) {
        if (strlen (ret.doi.doi_val) >= sizeof secmodel->doi) {
            remoteError(VIR_ERR_RPC, _("security doi exceeds maximum: %zd"),
                        sizeof secmodel->doi - 1);
            goto cleanup;
        }
        strcpy (secmodel->doi, ret.doi.doi_val);
    }

    rv = 0;

cleanup:
    xdr_free((xdrproc_t) xdr_remote_node_get_security_model_ret, (char *)&ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainMigratePrepare (virConnectPtr dconn,
                            char **cookie, int *cookielen,
                            const char *uri_in, char **uri_out,
                            unsigned long flags, const char *dname,
                            unsigned long resource)
{
    int rv = -1;
    remote_domain_migrate_prepare_args args;
    remote_domain_migrate_prepare_ret ret;
    struct private_data *priv = dconn->privateData;

    remoteDriverLock(priv);

    args.uri_in = uri_in == NULL ? NULL : (char **) &uri_in;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.resource = resource;

    memset (&ret, 0, sizeof ret);
    if (call (dconn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PREPARE,
              (xdrproc_t) xdr_remote_domain_migrate_prepare_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_prepare_ret, (char *) &ret) == -1)
        goto done;

    if (ret.cookie.cookie_len > 0) {
        *cookie = ret.cookie.cookie_val; /* Caller frees. */
        *cookielen = ret.cookie.cookie_len;
    }
    if (ret.uri_out)
        *uri_out = *ret.uri_out; /* Caller frees. */

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainMigratePrepare2 (virConnectPtr dconn,
                             char **cookie, int *cookielen,
                             const char *uri_in, char **uri_out,
                             unsigned long flags, const char *dname,
                             unsigned long resource,
                             const char *dom_xml)
{
    int rv = -1;
    remote_domain_migrate_prepare2_args args;
    remote_domain_migrate_prepare2_ret ret;
    struct private_data *priv = dconn->privateData;

    remoteDriverLock(priv);

    args.uri_in = uri_in == NULL ? NULL : (char **) &uri_in;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.resource = resource;
    args.dom_xml = (char *) dom_xml;

    memset (&ret, 0, sizeof ret);
    if (call (dconn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PREPARE2,
              (xdrproc_t) xdr_remote_domain_migrate_prepare2_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_prepare2_ret, (char *) &ret) == -1)
        goto done;

    if (ret.cookie.cookie_len > 0) {
        if (!cookie || !cookielen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookie or cookielen"));
            goto error;
        }
        *cookie = ret.cookie.cookie_val; /* Caller frees. */
        *cookielen = ret.cookie.cookie_len;
    }
    if (ret.uri_out) {
        if (!uri_out) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores uri_out"));
            goto error;
        }
        *uri_out = *ret.uri_out; /* Caller frees. */
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
error:
    if (ret.cookie.cookie_len)
        VIR_FREE(ret.cookie.cookie_val);
    if (ret.uri_out)
        VIR_FREE(*ret.uri_out);
    goto done;
}

static int
remoteDomainCreate (virDomainPtr domain)
{
    int rv = -1;
    remote_domain_create_args args;
    remote_domain_lookup_by_uuid_args args2;
    remote_domain_lookup_by_uuid_ret ret2;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_CREATE,
              (xdrproc_t) xdr_remote_domain_create_args, (char *) &args,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        goto done;

    /* Need to do a lookup figure out ID of newly started guest, because
     * bug in design of REMOTE_PROC_DOMAIN_CREATE means we aren't getting
     * it returned.
     */
    memcpy (args2.uuid, domain->uuid, VIR_UUID_BUFLEN);
    memset (&ret2, 0, sizeof ret2);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_LOOKUP_BY_UUID,
              (xdrproc_t) xdr_remote_domain_lookup_by_uuid_args, (char *) &args2,
              (xdrproc_t) xdr_remote_domain_lookup_by_uuid_ret, (char *) &ret2) == -1)
        goto done;

    domain->id = ret2.dom.id;
    xdr_free ((xdrproc_t) &xdr_remote_domain_lookup_by_uuid_ret, (char *) &ret2);

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static char *
remoteDomainGetSchedulerType (virDomainPtr domain, int *nparams)
{
    char *rv = NULL;
    remote_domain_get_scheduler_type_args args;
    remote_domain_get_scheduler_type_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_SCHEDULER_TYPE,
              (xdrproc_t) xdr_remote_domain_get_scheduler_type_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_get_scheduler_type_ret, (char *) &ret) == -1)
        goto done;

    if (nparams) *nparams = ret.nparams;

    /* Caller frees this. */
    rv = ret.type;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainMemoryStats (virDomainPtr domain,
                         struct _virDomainMemoryStat *stats,
                         unsigned int nr_stats,
                         unsigned int flags)
{
    int rv = -1;
    remote_domain_memory_stats_args args;
    remote_domain_memory_stats_ret ret;
    struct private_data *priv = domain->conn->privateData;
    unsigned int i;

    remoteDriverLock(priv);

    make_nonnull_domain (&args.dom, domain);
    if (nr_stats > REMOTE_DOMAIN_MEMORY_STATS_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("too many memory stats requested: %d > %d"), nr_stats,
                    REMOTE_DOMAIN_MEMORY_STATS_MAX);
        goto done;
    }
    args.maxStats = nr_stats;
    args.flags = flags;
    memset (&ret, 0, sizeof ret);

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_MEMORY_STATS,
              (xdrproc_t) xdr_remote_domain_memory_stats_args,
                (char *) &args,
              (xdrproc_t) xdr_remote_domain_memory_stats_ret,
                (char *) &ret) == -1)
        goto done;

    for (i = 0; i < ret.stats.stats_len; i++) {
        stats[i].tag = ret.stats.stats_val[i].tag;
        stats[i].val = ret.stats.stats_val[i].val;
    }
    rv = ret.stats.stats_len;
    xdr_free((xdrproc_t) xdr_remote_domain_memory_stats_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainBlockPeek (virDomainPtr domain,
                       const char *path,
                       unsigned long long offset,
                       size_t size,
                       void *buffer,
                       unsigned int flags)
{
    int rv = -1;
    remote_domain_block_peek_args args;
    remote_domain_block_peek_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    if (size > REMOTE_DOMAIN_BLOCK_PEEK_BUFFER_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("block peek request too large for remote protocol, %zi > %d"),
                    size, REMOTE_DOMAIN_BLOCK_PEEK_BUFFER_MAX);
        goto done;
    }

    make_nonnull_domain (&args.dom, domain);
    args.path = (char *) path;
    args.offset = offset;
    args.size = size;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_BLOCK_PEEK,
              (xdrproc_t) xdr_remote_domain_block_peek_args,
                (char *) &args,
              (xdrproc_t) xdr_remote_domain_block_peek_ret,
                (char *) &ret) == -1)
        goto done;

    if (ret.buffer.buffer_len != size) {
        remoteError(VIR_ERR_RPC, "%s",
                    _("returned buffer is not same size as requested"));
        goto cleanup;
    }

    memcpy (buffer, ret.buffer.buffer_val, size);
    rv = 0;

cleanup:
    VIR_FREE(ret.buffer.buffer_val);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteDomainMemoryPeek (virDomainPtr domain,
                        unsigned long long offset,
                        size_t size,
                        void *buffer,
                        unsigned int flags)
{
    int rv = -1;
    remote_domain_memory_peek_args args;
    remote_domain_memory_peek_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    if (size > REMOTE_DOMAIN_MEMORY_PEEK_BUFFER_MAX) {
        remoteError(VIR_ERR_RPC,
                    _("memory peek request too large for remote protocol, %zi > %d"),
                    size, REMOTE_DOMAIN_MEMORY_PEEK_BUFFER_MAX);
        goto done;
    }

    make_nonnull_domain (&args.dom, domain);
    args.offset = offset;
    args.size = size;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_MEMORY_PEEK,
              (xdrproc_t) xdr_remote_domain_memory_peek_args,
                (char *) &args,
              (xdrproc_t) xdr_remote_domain_memory_peek_ret,
                (char *) &ret) == -1)
        goto done;

    if (ret.buffer.buffer_len != size) {
        remoteError(VIR_ERR_RPC, "%s",
                    _("returned buffer is not same size as requested"));
        goto cleanup;
    }

    memcpy (buffer, ret.buffer.buffer_val, size);
    rv = 0;

cleanup:
    VIR_FREE(ret.buffer.buffer_val);

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int remoteDomainGetBlockJobInfo(virDomainPtr domain,
                                       const char *path,
                                       virDomainBlockJobInfoPtr info,
                                       unsigned int flags)
{
    int rv = -1;
    remote_domain_get_block_job_info_args args;
    remote_domain_get_block_job_info_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain(&args.dom, domain);
    args.path = (char *)path;
    args.flags = flags;

    if (call(domain->conn, priv, 0, REMOTE_PROC_DOMAIN_GET_BLOCK_JOB_INFO,
             (xdrproc_t)xdr_remote_domain_get_block_job_info_args,
               (char *)&args,
             (xdrproc_t)xdr_remote_domain_get_block_job_info_ret,
               (char *)&ret) == -1)
        goto done;

    if (ret.found) {
        info->type = ret.type;
        info->bandwidth = ret.bandwidth;
        info->cur = ret.cur;
        info->end = ret.end;
        rv = 1;
    } else {
        rv = 0;
    }

done:
    remoteDriverUnlock(priv);
    return rv;
}

/*----------------------------------------------------------------------*/

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteGenericOpen(virConnectPtr conn, virConnectAuthPtr auth,
                  unsigned int flags, void **genericPrivateData)
{
    if (inside_daemon)
        return VIR_DRV_OPEN_DECLINED;

    if (conn->driver &&
        STREQ (conn->driver->name, "remote")) {
        struct private_data *priv;

        /* If we're here, the remote driver is already
         * in use due to a) a QEMU uri, or b) a remote
         * URI. So we can re-use existing connection */
        priv = conn->privateData;
        remoteDriverLock(priv);
        priv->localUses++;
        *genericPrivateData = priv;
        remoteDriverUnlock(priv);
        return VIR_DRV_OPEN_SUCCESS;
    } else if (conn->networkDriver &&
               STREQ (conn->networkDriver->name, "remote")) {
        struct private_data *priv = conn->networkPrivateData;
        remoteDriverLock(priv);
        *genericPrivateData = priv;
        priv->localUses++;
        remoteDriverUnlock(priv);
        return VIR_DRV_OPEN_SUCCESS;
    } else {
        /* Using a non-remote driver, so we need to open a
         * new connection for network APIs, forcing it to
         * use the UNIX transport. This handles Xen driver
         * which doesn't have its own impl of the network APIs. */
        struct private_data *priv;
        int ret = remoteOpenSecondaryDriver(conn, auth, flags, &priv);
        *genericPrivateData = priv;
        return ret;
    }
}

static int
remoteGenericClose(virConnectPtr conn, void **genericPrivateData)
{
    int rv = 0;
    struct private_data *priv = *genericPrivateData;

    remoteDriverLock(priv);
    priv->localUses--;
    if (!priv->localUses) {
        rv = doRemoteClose(conn, priv);
        *genericPrivateData = NULL;
        remoteDriverUnlock(priv);
        virMutexDestroy(&priv->lock);
        VIR_FREE(priv);
    }
    if (priv)
        remoteDriverUnlock(priv);
    return rv;
}

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteNetworkOpen(virConnectPtr conn, virConnectAuthPtr auth,
                  unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->networkPrivateData);
}

static int
remoteNetworkClose(virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->networkPrivateData);
}

/*----------------------------------------------------------------------*/

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteInterfaceOpen(virConnectPtr conn, virConnectAuthPtr auth,
                    unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->interfacePrivateData);
}

static int
remoteInterfaceClose(virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->interfacePrivateData);
}

/*----------------------------------------------------------------------*/

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteStorageOpen(virConnectPtr conn, virConnectAuthPtr auth,
                  unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->storagePrivateData);
}

static int
remoteStorageClose(virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->storagePrivateData);
}

static char *
remoteFindStoragePoolSources (virConnectPtr conn,
                              const char *type,
                              const char *srcSpec,
                              unsigned int flags)
{
    char *rv = NULL;
    remote_find_storage_pool_sources_args args;
    remote_find_storage_pool_sources_ret ret;
    struct private_data *priv = conn->storagePrivateData;
    const char *emptyString = "";

    remoteDriverLock(priv);

    args.type = (char*)type;
    /*
     * I'd think the following would work here:
     *    args.srcSpec = (char**)&srcSpec;
     * since srcSpec is a remote_string (not a remote_nonnull_string).
     *
     * But when srcSpec is NULL, this yields:
     *    libvir: Remote error : marshaling args
     *
     * So for now I'm working around this by turning NULL srcSpecs
     * into empty strings.
     */
    args.srcSpec = srcSpec ? (char **)&srcSpec : (char **)&emptyString;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_FIND_STORAGE_POOL_SOURCES,
              (xdrproc_t) xdr_remote_find_storage_pool_sources_args, (char *) &args,
              (xdrproc_t) xdr_remote_find_storage_pool_sources_ret, (char *) &ret) == -1)
        goto done;

    rv = ret.xml;
    ret.xml = NULL; /* To stop xdr_free free'ing it */

    xdr_free ((xdrproc_t) xdr_remote_find_storage_pool_sources_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}

/*----------------------------------------------------------------------*/

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteDevMonOpen(virConnectPtr conn, virConnectAuthPtr auth,
                 unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->devMonPrivateData);
}

static int
remoteDevMonClose(virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->devMonPrivateData);
}

static int
remoteNodeDeviceDettach (virNodeDevicePtr dev)
{
    int rv = -1;
    remote_node_device_dettach_args args;
    /* This method is unusual in that it uses the HV driver, not the devMon driver
     * hence its use of privateData, instead of devMonPrivateData */
    struct private_data *priv = dev->conn->privateData;

    remoteDriverLock(priv);

    args.name = dev->name;

    if (call (dev->conn, priv, 0, REMOTE_PROC_NODE_DEVICE_DETTACH,
              (xdrproc_t) xdr_remote_node_device_dettach_args, (char *) &args,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        goto done;

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeDeviceReAttach (virNodeDevicePtr dev)
{
    int rv = -1;
    remote_node_device_re_attach_args args;
    /* This method is unusual in that it uses the HV driver, not the devMon driver
     * hence its use of privateData, instead of devMonPrivateData */
    struct private_data *priv = dev->conn->privateData;

    remoteDriverLock(priv);

    args.name = dev->name;

    if (call (dev->conn, priv, 0, REMOTE_PROC_NODE_DEVICE_RE_ATTACH,
              (xdrproc_t) xdr_remote_node_device_re_attach_args, (char *) &args,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        goto done;

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int
remoteNodeDeviceReset (virNodeDevicePtr dev)
{
    int rv = -1;
    remote_node_device_reset_args args;
    /* This method is unusual in that it uses the HV driver, not the devMon driver
     * hence its use of privateData, instead of devMonPrivateData */
    struct private_data *priv = dev->conn->privateData;

    remoteDriverLock(priv);

    args.name = dev->name;

    if (call (dev->conn, priv, 0, REMOTE_PROC_NODE_DEVICE_RESET,
              (xdrproc_t) xdr_remote_node_device_reset_args, (char *) &args,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        goto done;

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

/* ------------------------------------------------------------- */

static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteNWFilterOpen(virConnectPtr conn, virConnectAuthPtr auth,
                   unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->nwfilterPrivateData);
}

static int
remoteNWFilterClose(virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->nwfilterPrivateData);
}

/*----------------------------------------------------------------------*/

static int
remoteAuthenticate (virConnectPtr conn, struct private_data *priv,
                    virConnectAuthPtr auth ATTRIBUTE_UNUSED,
                    const char *authtype)
{
    struct remote_auth_list_ret ret;
    int err, type = REMOTE_AUTH_NONE;

    memset(&ret, 0, sizeof ret);
    err = call (conn, priv, 0,
                REMOTE_PROC_AUTH_LIST,
                (xdrproc_t) xdr_void, (char *) NULL,
                (xdrproc_t) xdr_remote_auth_list_ret, (char *) &ret);
    if (err < 0) {
        virErrorPtr verr = virGetLastError();
        if (verr && verr->code == VIR_ERR_NO_SUPPORT) {
            /* Missing RPC - old server - ignore */
            virResetLastError();
            return 0;
        }
        return -1;
    }

    if (ret.types.types_len == 0)
        return 0;

    if (authtype) {
        int want, i;
        if (STRCASEEQ(authtype, "sasl") ||
            STRCASEEQLEN(authtype, "sasl.", 5)) {
            want = REMOTE_AUTH_SASL;
        } else if (STRCASEEQ(authtype, "polkit")) {
            want = REMOTE_AUTH_POLKIT;
        } else {
            remoteError(VIR_ERR_AUTH_FAILED,
                        _("unknown authentication type %s"), authtype);
            return -1;
        }
        for (i = 0 ; i < ret.types.types_len ; i++) {
            if (ret.types.types_val[i] == want)
                type = want;
        }
        if (type == REMOTE_AUTH_NONE) {
            remoteError(VIR_ERR_AUTH_FAILED,
                        _("requested authentication type %s rejected"),
                        authtype);
            return -1;
        }
    } else {
        type = ret.types.types_val[0];
    }

    switch (type) {
#if HAVE_SASL
    case REMOTE_AUTH_SASL: {
        const char *mech = NULL;
        if (authtype &&
            STRCASEEQLEN(authtype, "sasl.", 5))
            mech = authtype + 5;

        if (remoteAuthSASL(conn, priv, auth, mech) < 0) {
            VIR_FREE(ret.types.types_val);
            return -1;
        }
        break;
    }
#endif

#if HAVE_POLKIT
    case REMOTE_AUTH_POLKIT:
        if (remoteAuthPolkit(conn, priv, auth) < 0) {
            VIR_FREE(ret.types.types_val);
            return -1;
        }
        break;
#endif

    case REMOTE_AUTH_NONE:
        /* Nothing todo, hurrah ! */
        break;

    default:
        remoteError(VIR_ERR_AUTH_FAILED,
                    _("unsupported authentication type %d"),
                    ret.types.types_val[0]);
        VIR_FREE(ret.types.types_val);
        return -1;
    }

    VIR_FREE(ret.types.types_val);

    return 0;
}



#if HAVE_SASL
static int remoteAuthCredVir2SASL(int vircred)
{
    switch (vircred) {
    case VIR_CRED_USERNAME:
        return SASL_CB_USER;

    case VIR_CRED_AUTHNAME:
        return SASL_CB_AUTHNAME;

    case VIR_CRED_LANGUAGE:
        return SASL_CB_LANGUAGE;

    case VIR_CRED_CNONCE:
        return SASL_CB_CNONCE;

    case VIR_CRED_PASSPHRASE:
        return SASL_CB_PASS;

    case VIR_CRED_ECHOPROMPT:
        return SASL_CB_ECHOPROMPT;

    case VIR_CRED_NOECHOPROMPT:
        return SASL_CB_NOECHOPROMPT;

    case VIR_CRED_REALM:
        return SASL_CB_GETREALM;
    }

    return 0;
}

static int remoteAuthCredSASL2Vir(int vircred)
{
    switch (vircred) {
    case SASL_CB_USER:
        return VIR_CRED_USERNAME;

    case SASL_CB_AUTHNAME:
        return VIR_CRED_AUTHNAME;

    case SASL_CB_LANGUAGE:
        return VIR_CRED_LANGUAGE;

    case SASL_CB_CNONCE:
        return VIR_CRED_CNONCE;

    case SASL_CB_PASS:
        return VIR_CRED_PASSPHRASE;

    case SASL_CB_ECHOPROMPT:
        return VIR_CRED_ECHOPROMPT;

    case SASL_CB_NOECHOPROMPT:
        return VIR_CRED_NOECHOPROMPT;

    case SASL_CB_GETREALM:
        return VIR_CRED_REALM;
    }

    return 0;
}

/*
 * @param credtype array of credential types client supports
 * @param ncredtype size of credtype array
 * @return the SASL callback structure, or NULL on error
 *
 * Build up the SASL callback structure. We register one callback for
 * each credential type that the libvirt client indicated they support.
 * We explicitly leav the callback function pointer at NULL though,
 * because we don't actually want to get SASL callbacks triggered.
 * Instead, we want the start/step functions to return SASL_INTERACT.
 * This lets us give the libvirt client a list of all required
 * credentials in one go, rather than triggering the callback one
 * credential at a time,
 */
static sasl_callback_t *remoteAuthMakeCallbacks(int *credtype, int ncredtype)
{
    sasl_callback_t *cbs;
    int i, n;
    if (VIR_ALLOC_N(cbs, ncredtype+1) < 0) {
        return NULL;
    }

    for (i = 0, n = 0 ; i < ncredtype ; i++) {
        int id = remoteAuthCredVir2SASL(credtype[i]);
        if (id != 0)
            cbs[n++].id = id;
        /* Don't fill proc or context fields of sasl_callback_t
         * because we want to use interactions instead */
    }
    cbs[n].id = 0;
    return cbs;
}


/*
 * @param interact SASL interactions required
 * @param cred populated with libvirt credential metadata
 * @return the size of the cred array returned
 *
 * Builds up an array of libvirt credential structs, populating
 * with data from the SASL interaction struct. These two structs
 * are basically a 1-to-1 copy of each other.
 */
static int remoteAuthMakeCredentials(sasl_interact_t *interact,
                                     virConnectCredentialPtr *cred)
{
    int ninteract;
    if (!cred)
        return -1;

    for (ninteract = 0 ; interact[ninteract].id != 0 ; ninteract++)
        ; /* empty */

    if (VIR_ALLOC_N(*cred, ninteract) < 0)
        return -1;

    for (ninteract = 0 ; interact[ninteract].id != 0 ; ninteract++) {
        (*cred)[ninteract].type = remoteAuthCredSASL2Vir(interact[ninteract].id);
        if (!(*cred)[ninteract].type) {
            VIR_FREE(*cred);
            return -1;
        }
        if (interact[ninteract].challenge)
            (*cred)[ninteract].challenge = interact[ninteract].challenge;
        (*cred)[ninteract].prompt = interact[ninteract].prompt;
        if (interact[ninteract].defresult)
            (*cred)[ninteract].defresult = interact[ninteract].defresult;
        (*cred)[ninteract].result = NULL;
    }

    return ninteract;
}

static void remoteAuthFreeCredentials(virConnectCredentialPtr cred,
                                      int ncred)
{
    int i;
    for (i = 0 ; i < ncred ; i++)
        VIR_FREE(cred[i].result);
    VIR_FREE(cred);
}


/*
 * @param cred the populated libvirt credentials
 * @param interact the SASL interactions to fill in results for
 *
 * Fills the SASL interactions with the result from the libvirt
 * callbacks
 */
static void remoteAuthFillInteract(virConnectCredentialPtr cred,
                                   sasl_interact_t *interact)
{
    int ninteract;
    for (ninteract = 0 ; interact[ninteract].id != 0 ; ninteract++) {
        interact[ninteract].result = cred[ninteract].result;
        interact[ninteract].len = cred[ninteract].resultlen;
    }
}

/* Perform the SASL authentication process
 */
static int
remoteAuthSASL (virConnectPtr conn, struct private_data *priv,
                virConnectAuthPtr auth, const char *wantmech)
{
    remote_auth_sasl_init_ret iret;
    remote_auth_sasl_start_args sargs;
    remote_auth_sasl_start_ret sret;
    remote_auth_sasl_step_args pargs;
    remote_auth_sasl_step_ret pret;
    const char *clientout;
    char *serverin = NULL;
    size_t clientoutlen, serverinlen;
    const char *mech;
    int err, complete;
    int ssf;
    sasl_callback_t *saslcb = NULL;
    sasl_interact_t *interact = NULL;
    virConnectCredentialPtr cred = NULL;
    int ncred = 0;
    int ret = -1;
    const char *mechlist;
    virNetSASLContextPtr saslCtxt;
    virNetSASLSessionPtr sasl = NULL;

    VIR_DEBUG("Client initialize SASL authentication");

    if (!(saslCtxt = virNetSASLContextNewClient()))
        goto cleanup;

    if (auth) {
        if ((saslcb = remoteAuthMakeCallbacks(auth->credtype, auth->ncredtype)) == NULL)
            goto cleanup;
    } else {
        saslcb = NULL;
    }

    /* Setup a handle for being a client */
    if (!(sasl = virNetSASLSessionNewClient(saslCtxt,
                                            "libvirt",
                                            priv->hostname,
                                            virNetClientLocalAddrString(priv->client),
                                            virNetClientRemoteAddrString(priv->client),
                                            saslcb)))
        goto cleanup;

    /* Initialize some connection props we care about */
    if (priv->tls) {
        if ((ssf = virNetClientGetTLSKeySize(priv->client)) < 0)
            goto cleanup;

        ssf *= 8; /* key size is bytes, sasl wants bits */

        VIR_DEBUG("Setting external SSF %d", ssf);
        if (virNetSASLSessionExtKeySize(sasl, ssf) < 0)
            goto cleanup;
    }

    /* If we've got a secure channel (TLS or UNIX sock), we don't care about SSF */
    /* If we're not secure, then forbid any anonymous or trivially crackable auth */
    if (virNetSASLSessionSecProps(sasl,
                                  priv->is_secure ? 0 : 56, /* Equiv to DES supported by all Kerberos */
                                  priv->is_secure ? 0 : 100000, /* Very strong ! AES == 256 */
                                  priv->is_secure ? true : false) < 0)
        goto cleanup;

    /* First call is to inquire about supported mechanisms in the server */
    memset (&iret, 0, sizeof iret);
    if (call (conn, priv, 0, REMOTE_PROC_AUTH_SASL_INIT,
              (xdrproc_t) xdr_void, (char *)NULL,
              (xdrproc_t) xdr_remote_auth_sasl_init_ret, (char *) &iret) != 0)
        goto cleanup;


    mechlist = iret.mechlist;
    if (wantmech) {
        if (strstr(mechlist, wantmech) == NULL) {
            remoteError(VIR_ERR_AUTH_FAILED,
                        _("SASL mechanism %s not supported by server"),
                        wantmech);
            VIR_FREE(iret.mechlist);
            goto cleanup;
        }
        mechlist = wantmech;
    }
 restart:
    /* Start the auth negotiation on the client end first */
    VIR_DEBUG("Client start negotiation mechlist '%s'", mechlist);
    if ((err = virNetSASLSessionClientStart(sasl,
                                            mechlist,
                                            &interact,
                                            &clientout,
                                            &clientoutlen,
                                            &mech)) < 0)
        goto cleanup;

    /* Need to gather some credentials from the client */
    if (err == VIR_NET_SASL_INTERACT) {
        const char *msg;
        if (cred) {
            remoteAuthFreeCredentials(cred, ncred);
            cred = NULL;
        }
        if ((ncred = remoteAuthMakeCredentials(interact, &cred)) < 0) {
            remoteError(VIR_ERR_AUTH_FAILED, "%s",
                        _("Failed to make auth credentials"));
            VIR_FREE(iret.mechlist);
            goto cleanup;
        }
        /* Run the authentication callback */
        if (auth && auth->cb) {
            if ((*(auth->cb))(cred, ncred, auth->cbdata) >= 0) {
                remoteAuthFillInteract(cred, interact);
                goto restart;
            }
            msg = "Failed to collect auth credentials";
        } else {
            msg = "No authentication callback available";
        }
        remoteError(VIR_ERR_AUTH_FAILED, "%s", msg);
        goto cleanup;
    }
    VIR_FREE(iret.mechlist);

    if (clientoutlen > REMOTE_AUTH_SASL_DATA_MAX) {
        remoteError(VIR_ERR_AUTH_FAILED,
                    _("SASL negotiation data too long: %zu bytes"),
                    clientoutlen);
        goto cleanup;
    }
    /* NB, distinction of NULL vs "" is *critical* in SASL */
    memset(&sargs, 0, sizeof sargs);
    sargs.nil = clientout ? 0 : 1;
    sargs.data.data_val = (char*)clientout;
    sargs.data.data_len = clientoutlen;
    sargs.mech = (char*)mech;
    VIR_DEBUG("Server start negotiation with mech %s. Data %zu bytes %p",
              mech, clientoutlen, clientout);

    /* Now send the initial auth data to the server */
    memset (&sret, 0, sizeof sret);
    if (call (conn, priv, 0, REMOTE_PROC_AUTH_SASL_START,
              (xdrproc_t) xdr_remote_auth_sasl_start_args, (char *) &sargs,
              (xdrproc_t) xdr_remote_auth_sasl_start_ret, (char *) &sret) != 0)
        goto cleanup;

    complete = sret.complete;
    /* NB, distinction of NULL vs "" is *critical* in SASL */
    serverin = sret.nil ? NULL : sret.data.data_val;
    serverinlen = sret.data.data_len;
    VIR_DEBUG("Client step result complete: %d. Data %zu bytes %p",
              complete, serverinlen, serverin);

    /* Loop-the-loop...
     * Even if the server has completed, the client must *always* do at least one step
     * in this loop to verify the server isn't lying about something. Mutual auth */
    for (;;) {
    restep:
        if ((err = virNetSASLSessionClientStep(sasl,
                                               serverin,
                                               serverinlen,
                                               &interact,
                                               &clientout,
                                               &clientoutlen)) < 0)
            goto cleanup;

        /* Need to gather some credentials from the client */
        if (err == VIR_NET_SASL_INTERACT) {
            const char *msg;
            if (cred) {
                remoteAuthFreeCredentials(cred, ncred);
                cred = NULL;
            }
            if ((ncred = remoteAuthMakeCredentials(interact, &cred)) < 0) {
                remoteError(VIR_ERR_AUTH_FAILED, "%s",
                            _("Failed to make auth credentials"));
                goto cleanup;
            }
            /* Run the authentication callback */
            if (auth && auth->cb) {
                if ((*(auth->cb))(cred, ncred, auth->cbdata) >= 0) {
                    remoteAuthFillInteract(cred, interact);
                    goto restep;
                }
                msg = _("Failed to collect auth credentials");
            } else {
                msg = _("No authentication callback available");
            }
            remoteError(VIR_ERR_AUTH_FAILED, "%s", msg);
            goto cleanup;
        }

        VIR_FREE(serverin);
        VIR_DEBUG("Client step result %d. Data %zu bytes %p",
                  err, clientoutlen, clientout);

        /* Previous server call showed completion & we're now locally complete too */
        if (complete && err == VIR_NET_SASL_COMPLETE)
            break;

        /* Not done, prepare to talk with the server for another iteration */
        /* NB, distinction of NULL vs "" is *critical* in SASL */
        memset(&pargs, 0, sizeof pargs);
        pargs.nil = clientout ? 0 : 1;
        pargs.data.data_val = (char*)clientout;
        pargs.data.data_len = clientoutlen;
        VIR_DEBUG("Server step with %zu bytes %p",
                  clientoutlen, clientout);

        memset (&pret, 0, sizeof pret);
        if (call (conn, priv, 0, REMOTE_PROC_AUTH_SASL_STEP,
                  (xdrproc_t) xdr_remote_auth_sasl_step_args, (char *) &pargs,
                  (xdrproc_t) xdr_remote_auth_sasl_step_ret, (char *) &pret) != 0)
            goto cleanup;

        complete = pret.complete;
        /* NB, distinction of NULL vs "" is *critical* in SASL */
        serverin = pret.nil ? NULL : pret.data.data_val;
        serverinlen = pret.data.data_len;

        VIR_DEBUG("Client step result complete: %d. Data %zu bytes %p",
                  complete, serverinlen, serverin);

        /* This server call shows complete, and earlier client step was OK */
        if (complete && err == VIR_NET_SASL_COMPLETE) {
            VIR_FREE(serverin);
            break;
        }
    }

    /* Check for suitable SSF if not already secure (TLS or UNIX sock) */
    if (!priv->is_secure) {
        if ((ssf = virNetSASLSessionGetKeySize(sasl)) < 0)
            goto cleanup;

        VIR_DEBUG("SASL SSF value %d", ssf);
        if (ssf < 56) { /* 56 == DES level, good for Kerberos */
            remoteError(VIR_ERR_AUTH_FAILED,
                        _("negotiation SSF %d was not strong enough"), ssf);
            goto cleanup;
        }
        priv->is_secure = 1;
    }

    VIR_DEBUG("SASL authentication complete");
    virNetClientSetSASLSession(priv->client, sasl);
    ret = 0;

 cleanup:
    VIR_FREE(serverin);

    VIR_FREE(saslcb);
    remoteAuthFreeCredentials(cred, ncred);
    virNetSASLSessionFree(sasl);
    virNetSASLContextFree(saslCtxt);

    return ret;
}
#endif /* HAVE_SASL */


#if HAVE_POLKIT
# if HAVE_POLKIT1
static int
remoteAuthPolkit (virConnectPtr conn, struct private_data *priv,
                  virConnectAuthPtr auth ATTRIBUTE_UNUSED)
{
    remote_auth_polkit_ret ret;
    VIR_DEBUG("Client initialize PolicyKit-1 authentication");

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_AUTH_POLKIT,
              (xdrproc_t) xdr_void, (char *)NULL,
              (xdrproc_t) xdr_remote_auth_polkit_ret, (char *) &ret) != 0) {
        return -1; /* virError already set by call */
    }

    VIR_DEBUG("PolicyKit-1 authentication complete");
    return 0;
}
# elif HAVE_POLKIT0
/* Perform the PolicyKit authentication process
 */
static int
remoteAuthPolkit (virConnectPtr conn, struct private_data *priv,
                  virConnectAuthPtr auth)
{
    remote_auth_polkit_ret ret;
    int i, allowcb = 0;
    virConnectCredential cred = {
        VIR_CRED_EXTERNAL,
        conn->flags & VIR_CONNECT_RO ? "org.libvirt.unix.monitor" : "org.libvirt.unix.manage",
        "PolicyKit",
        NULL,
        NULL,
        0,
    };
    VIR_DEBUG("Client initialize PolicyKit-0 authentication");

    if (auth && auth->cb) {
        /* Check if the necessary credential type for PolicyKit is supported */
        for (i = 0 ; i < auth->ncredtype ; i++) {
            if (auth->credtype[i] == VIR_CRED_EXTERNAL)
                allowcb = 1;
        }

        if (allowcb) {
            VIR_DEBUG("Client run callback for PolicyKit authentication");
            /* Run the authentication callback */
            if ((*(auth->cb))(&cred, 1, auth->cbdata) < 0) {
                remoteError(VIR_ERR_AUTH_FAILED, "%s",
                            _("Failed to collect auth credentials"));
                return -1;
            }
        } else {
            VIR_DEBUG("Client auth callback does not support PolicyKit");
        }
    } else {
        VIR_DEBUG("No auth callback provided");
    }

    memset (&ret, 0, sizeof ret);
    if (call (conn, priv, 0, REMOTE_PROC_AUTH_POLKIT,
              (xdrproc_t) xdr_void, (char *)NULL,
              (xdrproc_t) xdr_remote_auth_polkit_ret, (char *) &ret) != 0) {
        return -1; /* virError already set by call */
    }

    VIR_DEBUG("PolicyKit-0 authentication complete");
    return 0;
}
# endif /* HAVE_POLKIT0 */
#endif /* HAVE_POLKIT */
/*----------------------------------------------------------------------*/

static int remoteDomainEventRegister(virConnectPtr conn,
                                     virConnectDomainEventCallback callback,
                                     void *opaque,
                                     virFreeCallback freecb)
{
    int rv = -1;
    struct private_data *priv = conn->privateData;

    remoteDriverLock(priv);

    if (priv->domainEventState->timer < 0) {
         remoteError(VIR_ERR_NO_SUPPORT, "%s", _("no event support"));
         goto done;
    }

    if (virDomainEventCallbackListAdd(conn, priv->domainEventState->callbacks,
                                      callback, opaque, freecb) < 0) {
         remoteError(VIR_ERR_RPC, "%s", _("adding cb to list"));
         goto done;
    }

    if (virDomainEventCallbackListCountID(conn,
                                          priv->domainEventState->callbacks,
                                          VIR_DOMAIN_EVENT_ID_LIFECYCLE) == 1) {
        /* Tell the server when we are the first callback deregistering */
        if (call (conn, priv, 0, REMOTE_PROC_DOMAIN_EVENTS_REGISTER,
                (xdrproc_t) xdr_void, (char *) NULL,
                (xdrproc_t) xdr_void, (char *) NULL) == -1)
            goto done;
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}

static int remoteDomainEventDeregister(virConnectPtr conn,
                                       virConnectDomainEventCallback callback)
{
    struct private_data *priv = conn->privateData;
    int rv = -1;

    remoteDriverLock(priv);

    if (virDomainEventStateDeregister(conn,
                                      priv->domainEventState,
                                      callback) < 0)
        goto done;

    if (virDomainEventCallbackListCountID(conn,
                                          priv->domainEventState->callbacks,
                                          VIR_DOMAIN_EVENT_ID_LIFECYCLE) == 0) {
        /* Tell the server when we are the last callback deregistering */
        if (call (conn, priv, 0, REMOTE_PROC_DOMAIN_EVENTS_DEREGISTER,
                  (xdrproc_t) xdr_void, (char *) NULL,
                  (xdrproc_t) xdr_void, (char *) NULL) == -1)
            goto done;
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}


static void
remoteDomainBuildEventLifecycle(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                                virNetClientPtr client ATTRIBUTE_UNUSED,
                                void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_lifecycle_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventNewFromDom(dom, msg->event, msg->detail);
    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventReboot(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                             virNetClientPtr client ATTRIBUTE_UNUSED,
                             void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_reboot_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventRebootNewFromDom(dom);
    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventRTCChange(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                                virNetClientPtr client ATTRIBUTE_UNUSED,
                                void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_rtc_change_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventRTCChangeNewFromDom(dom, msg->offset);
    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventWatchdog(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                               virNetClientPtr client ATTRIBUTE_UNUSED,
                               void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_watchdog_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventWatchdogNewFromDom(dom, msg->action);
    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventIOError(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                              virNetClientPtr client ATTRIBUTE_UNUSED,
                              void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_io_error_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventIOErrorNewFromDom(dom,
                                            msg->srcPath,
                                            msg->devAlias,
                                            msg->action);
    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventIOErrorReason(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                                    virNetClientPtr client ATTRIBUTE_UNUSED,
                                    void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_io_error_reason_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn,msg->dom);
    if (!dom)
        return;

    event = virDomainEventIOErrorReasonNewFromDom(dom,
                                                  msg->srcPath,
                                                  msg->devAlias,
                                                  msg->action,
                                                  msg->reason);

    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static void
remoteDomainBuildEventGraphics(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                               virNetClientPtr client ATTRIBUTE_UNUSED,
                               void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_graphics_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;
    virDomainEventGraphicsAddressPtr localAddr = NULL;
    virDomainEventGraphicsAddressPtr remoteAddr = NULL;
    virDomainEventGraphicsSubjectPtr subject = NULL;
    int i;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    if (VIR_ALLOC(localAddr) < 0)
        goto no_memory;
    localAddr->family = msg->local.family;
    if (!(localAddr->service = strdup(msg->local.service)) ||
        !(localAddr->node = strdup(msg->local.node)))
        goto no_memory;

    if (VIR_ALLOC(remoteAddr) < 0)
        goto no_memory;
    remoteAddr->family = msg->remote.family;
    if (!(remoteAddr->service = strdup(msg->remote.service)) ||
        !(remoteAddr->node = strdup(msg->remote.node)))
        goto no_memory;

    if (VIR_ALLOC(subject) < 0)
        goto no_memory;
    if (VIR_ALLOC_N(subject->identities, msg->subject.subject_len) < 0)
        goto no_memory;
    subject->nidentity = msg->subject.subject_len;
    for (i = 0 ; i < subject->nidentity ; i++) {
        if (!(subject->identities[i].type = strdup(msg->subject.subject_val[i].type)) ||
            !(subject->identities[i].name = strdup(msg->subject.subject_val[i].name)))
            goto no_memory;
    }

    event = virDomainEventGraphicsNewFromDom(dom,
                                             msg->phase,
                                             localAddr,
                                             remoteAddr,
                                             msg->authScheme,
                                             subject);

    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
    return;

no_memory:
    if (localAddr) {
        VIR_FREE(localAddr->service);
        VIR_FREE(localAddr->node);
        VIR_FREE(localAddr);
    }
    if (remoteAddr) {
        VIR_FREE(remoteAddr->service);
        VIR_FREE(remoteAddr->node);
        VIR_FREE(remoteAddr);
    }
    if (subject) {
        for (i = 0 ; i < subject->nidentity ; i++) {
            VIR_FREE(subject->identities[i].type);
            VIR_FREE(subject->identities[i].name);
        }
        VIR_FREE(subject->identities);
        VIR_FREE(subject);
    }
    return;
}


static void
remoteDomainBuildEventControlError(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
                                   virNetClientPtr client ATTRIBUTE_UNUSED,
                                   void *evdata, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;
    remote_domain_event_control_error_msg *msg = evdata;
    virDomainPtr dom;
    virDomainEventPtr event = NULL;

    dom = get_nonnull_domain(conn, msg->dom);
    if (!dom)
        return;

    event = virDomainEventControlErrorNewFromDom(dom);
    xdr_free ((xdrproc_t) &xdr_remote_domain_event_control_error_msg, (char *) &msg);

    virDomainFree(dom);

    remoteDomainEventQueue(priv, event);
}


static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteSecretOpen(virConnectPtr conn, virConnectAuthPtr auth,
                 unsigned int flags)
{
    return remoteGenericOpen(conn, auth, flags, &conn->secretPrivateData);
}

static int
remoteSecretClose (virConnectPtr conn)
{
    return remoteGenericClose(conn, &conn->secretPrivateData);
}

static unsigned char *
remoteSecretGetValue (virSecretPtr secret, size_t *value_size,
                      unsigned int flags, unsigned int internalFlags)
{
    unsigned char *rv = NULL;
    remote_secret_get_value_args args;
    remote_secret_get_value_ret ret;
    struct private_data *priv = secret->conn->secretPrivateData;

    remoteDriverLock (priv);

    /* internalFlags intentionally do not go over the wire */
    if (internalFlags) {
        remoteError(VIR_ERR_NO_SUPPORT, "%s", _("no internalFlags support"));
        goto done;
    }

    make_nonnull_secret (&args.secret, secret);
    args.flags = flags;

    memset (&ret, 0, sizeof (ret));
    if (call (secret->conn, priv, 0, REMOTE_PROC_SECRET_GET_VALUE,
              (xdrproc_t) xdr_remote_secret_get_value_args, (char *) &args,
              (xdrproc_t) xdr_remote_secret_get_value_ret, (char *) &ret) == -1)
        goto done;

    *value_size = ret.value.value_len;
    rv = (unsigned char *) ret.value.value_val; /* Caller frees. */

done:
    remoteDriverUnlock (priv);
    return rv;
}


static int
remoteStreamSend(virStreamPtr st,
                 const char *data,
                 size_t nbytes)
{
    VIR_DEBUG("st=%p data=%p nbytes=%zu", st, data, nbytes);
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int rv = -1;

    remoteDriverLock(priv);

    if (virNetClientStreamRaiseError(privst))
        goto cleanup;

    rv = virNetClientStreamSendPacket(privst,
                                      priv->client,
                                      VIR_NET_CONTINUE,
                                      data,
                                      nbytes);

cleanup:
    remoteDriverUnlock(priv);

    return rv;
}


static int
remoteStreamRecv(virStreamPtr st,
                 char *data,
                 size_t nbytes)
{
    VIR_DEBUG("st=%p data=%p nbytes=%zu", st, data, nbytes);
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int rv = -1;

    remoteDriverLock(priv);

    if (virNetClientStreamRaiseError(privst))
        goto cleanup;

    rv = virNetClientStreamRecvPacket(privst,
                                      priv->client,
                                      data,
                                      nbytes,
                                      (st->flags & VIR_STREAM_NONBLOCK));

    VIR_DEBUG("Done %d", rv);

cleanup:
    remoteDriverUnlock(priv);

    return rv;
}

struct remoteStreamCallbackData {
    virStreamPtr st;
    virStreamEventCallback cb;
    void *opaque;
    virFreeCallback ff;
};

static void remoteStreamEventCallback(virNetClientStreamPtr stream ATTRIBUTE_UNUSED,
                                      int events,
                                      void *opaque)
{
    struct remoteStreamCallbackData *cbdata = opaque;

    (cbdata->cb)(cbdata->st, events, cbdata->opaque);
}


static void remoteStreamCallbackFree(void *opaque)
{
    struct remoteStreamCallbackData *cbdata = opaque;

    if (!cbdata->cb && cbdata->ff)
        (cbdata->ff)(cbdata->opaque);

    virStreamFree(cbdata->st);
    VIR_FREE(opaque);
}


static int
remoteStreamEventAddCallback(virStreamPtr st,
                             int events,
                             virStreamEventCallback cb,
                             void *opaque,
                             virFreeCallback ff)
{
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int ret = -1;
    struct remoteStreamCallbackData *cbdata;

    if (VIR_ALLOC(cbdata) < 0) {
        virReportOOMError();
        return -1;
    }
    cbdata->cb = cb;
    cbdata->opaque = opaque;
    cbdata->ff = ff;
    cbdata->st = st;
    virStreamRef(st);

    remoteDriverLock(priv);

    if ((ret = virNetClientStreamEventAddCallback(privst,
                                                  events,
                                                  remoteStreamEventCallback,
                                                  cbdata,
                                                  remoteStreamCallbackFree)) < 0) {
        VIR_FREE(cbdata);
        goto cleanup;
    }

cleanup:
    remoteDriverUnlock(priv);
    return ret;
}


static int
remoteStreamEventUpdateCallback(virStreamPtr st,
                                int events)
{
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int ret = -1;

    remoteDriverLock(priv);

    ret = virNetClientStreamEventUpdateCallback(privst, events);

    remoteDriverUnlock(priv);
    return ret;
}


static int
remoteStreamEventRemoveCallback(virStreamPtr st)
{
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int ret = -1;

    remoteDriverLock(priv);

    ret = virNetClientStreamEventRemoveCallback(privst);

    remoteDriverUnlock(priv);
    return ret;
}


static int
remoteStreamFinish(virStreamPtr st)
{
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int ret = -1;

    remoteDriverLock(priv);

    if (virNetClientStreamRaiseError(privst))
        goto cleanup;

    ret = virNetClientStreamSendPacket(privst,
                                       priv->client,
                                       VIR_NET_OK,
                                       NULL,
                                       0);

cleanup:
    virNetClientRemoveStream(priv->client, privst);
    virNetClientStreamFree(privst);
    st->privateData = NULL;
    st->driver = NULL;

    remoteDriverUnlock(priv);
    return ret;
}


static int
remoteStreamAbort(virStreamPtr st)
{
    struct private_data *priv = st->conn->privateData;
    virNetClientStreamPtr privst = st->privateData;
    int ret = -1;

    remoteDriverLock(priv);

    if (virNetClientStreamRaiseError(privst))
        goto cleanup;

    ret = virNetClientStreamSendPacket(privst,
                                       priv->client,
                                       VIR_NET_ERROR,
                                       NULL,
                                       0);

cleanup:
    virNetClientRemoveStream(priv->client, privst);
    virNetClientStreamFree(privst);
    st->privateData = NULL;
    st->driver = NULL;

    remoteDriverUnlock(priv);
    return ret;
}


static virStreamDriver remoteStreamDrv = {
    .streamRecv = remoteStreamRecv,
    .streamSend = remoteStreamSend,
    .streamFinish = remoteStreamFinish,
    .streamAbort = remoteStreamAbort,
    .streamAddCallback = remoteStreamEventAddCallback,
    .streamUpdateCallback = remoteStreamEventUpdateCallback,
    .streamRemoveCallback = remoteStreamEventRemoveCallback,
};


static int remoteDomainEventRegisterAny(virConnectPtr conn,
                                        virDomainPtr dom,
                                        int eventID,
                                        virConnectDomainEventGenericCallback callback,
                                        void *opaque,
                                        virFreeCallback freecb)
{
    int rv = -1;
    struct private_data *priv = conn->privateData;
    remote_domain_events_register_any_args args;
    int callbackID;

    remoteDriverLock(priv);

    if (priv->domainEventState->timer < 0) {
         remoteError(VIR_ERR_NO_SUPPORT, "%s", _("no event support"));
         goto done;
    }

    if ((callbackID = virDomainEventCallbackListAddID(conn,
                                                      priv->domainEventState->callbacks,
                                                      dom, eventID,
                                                      callback, opaque, freecb)) < 0) {
         remoteError(VIR_ERR_RPC, "%s", _("adding cb to list"));
         goto done;
    }

    /* If this is the first callback for this eventID, we need to enable
     * events on the server */
    if (virDomainEventCallbackListCountID(conn,
                                          priv->domainEventState->callbacks,
                                          eventID) == 1) {
        args.eventID = eventID;

        if (call (conn, priv, 0, REMOTE_PROC_DOMAIN_EVENTS_REGISTER_ANY,
                  (xdrproc_t) xdr_remote_domain_events_register_any_args, (char *) &args,
                  (xdrproc_t) xdr_void, (char *)NULL) == -1) {
            virDomainEventCallbackListRemoveID(conn,
                                               priv->domainEventState->callbacks,
                                               callbackID);
            goto done;
        }
    }

    rv = callbackID;

done:
    remoteDriverUnlock(priv);
    return rv;
}


static int remoteDomainEventDeregisterAny(virConnectPtr conn,
                                          int callbackID)
{
    struct private_data *priv = conn->privateData;
    int rv = -1;
    remote_domain_events_deregister_any_args args;
    int eventID;

    remoteDriverLock(priv);

    if ((eventID = virDomainEventCallbackListEventID(conn,
                                                     priv->domainEventState->callbacks,
                                                     callbackID)) < 0) {
        remoteError(VIR_ERR_RPC, _("unable to find callback ID %d"), callbackID);
        goto done;
    }

    if (virDomainEventStateDeregisterAny(conn,
                                         priv->domainEventState,
                                         callbackID) < 0)
        goto done;

    /* If that was the last callback for this eventID, we need to disable
     * events on the server */
    if (virDomainEventCallbackListCountID(conn,
                                          priv->domainEventState->callbacks,
                                          eventID) == 0) {
        args.eventID = eventID;

        if (call (conn, priv, 0, REMOTE_PROC_DOMAIN_EVENTS_DEREGISTER_ANY,
                  (xdrproc_t) xdr_remote_domain_events_deregister_any_args, (char *) &args,
                  (xdrproc_t) xdr_void, (char *) NULL) == -1)
            goto done;
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}


/*----------------------------------------------------------------------*/

static int
remoteQemuDomainMonitorCommand (virDomainPtr domain, const char *cmd,
                                char **result, unsigned int flags)
{
    int rv = -1;
    qemu_monitor_command_args args;
    qemu_monitor_command_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    make_nonnull_domain(&args.dom, domain);
    args.cmd = (char *)cmd;
    args.flags = flags;

    memset (&ret, 0, sizeof ret);
    if (call (domain->conn, priv, REMOTE_CALL_QEMU, QEMU_PROC_MONITOR_COMMAND,
              (xdrproc_t) xdr_qemu_monitor_command_args, (char *) &args,
              (xdrproc_t) xdr_qemu_monitor_command_ret, (char *) &ret) == -1)
        goto done;

    *result = strdup(ret.result);
    if (*result == NULL) {
        virReportOOMError();
        goto cleanup;
    }

    rv = 0;

cleanup:
    xdr_free ((xdrproc_t) xdr_qemu_monitor_command_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;
}


static char *
remoteDomainMigrateBegin3(virDomainPtr domain,
                          const char *xmlin,
                          char **cookieout,
                          int *cookieoutlen,
                          unsigned long flags,
                          const char *dname,
                          unsigned long resource)
{
    char *rv = NULL;
    remote_domain_migrate_begin3_args args;
    remote_domain_migrate_begin3_ret ret;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));
    memset(&ret, 0, sizeof(ret));

    make_nonnull_domain (&args.dom, domain);
    args.xmlin = xmlin == NULL ? NULL : (char **) &xmlin;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.resource = resource;

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_BEGIN3,
              (xdrproc_t) xdr_remote_domain_migrate_begin3_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_begin3_ret, (char *) &ret) == -1)
        goto done;

    if (ret.cookie_out.cookie_out_len > 0) {
        if (!cookieout || !cookieoutlen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookieout or cookieoutlen"));
            goto error;
        }
        *cookieout = ret.cookie_out.cookie_out_val; /* Caller frees. */
        *cookieoutlen = ret.cookie_out.cookie_out_len;
    }

    rv = ret.xml; /* caller frees */

done:
    remoteDriverUnlock(priv);
    return rv;

error:
    VIR_FREE(ret.cookie_out.cookie_out_val);
    goto done;
}


static int
remoteDomainMigratePrepare3(virConnectPtr dconn,
                            const char *cookiein,
                            int cookieinlen,
                            char **cookieout,
                            int *cookieoutlen,
                            const char *uri_in,
                            char **uri_out,
                            unsigned long flags,
                            const char *dname,
                            unsigned long resource,
                            const char *dom_xml)
{
    int rv = -1;
    remote_domain_migrate_prepare3_args args;
    remote_domain_migrate_prepare3_ret ret;
    struct private_data *priv = dconn->privateData;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));
    memset(&ret, 0, sizeof(ret));

    args.cookie_in.cookie_in_val = (char *)cookiein;
    args.cookie_in.cookie_in_len = cookieinlen;
    args.uri_in = uri_in == NULL ? NULL : (char **) &uri_in;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.resource = resource;
    args.dom_xml = (char *) dom_xml;

    memset (&ret, 0, sizeof ret);
    if (call (dconn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PREPARE3,
              (xdrproc_t) xdr_remote_domain_migrate_prepare3_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_prepare3_ret, (char *) &ret) == -1)
        goto done;

    if (ret.cookie_out.cookie_out_len > 0) {
        if (!cookieout || !cookieoutlen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookieout or cookieoutlen"));
            goto error;
        }
        *cookieout = ret.cookie_out.cookie_out_val; /* Caller frees. */
        *cookieoutlen = ret.cookie_out.cookie_out_len;
    }
    if (ret.uri_out) {
        if (!uri_out) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores uri_out"));
            goto error;
        }
        *uri_out = *ret.uri_out; /* Caller frees. */
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
error:
    VIR_FREE(ret.cookie_out.cookie_out_val);
    if (ret.uri_out)
        VIR_FREE(*ret.uri_out);
    goto done;
}


static int
remoteDomainMigratePrepareTunnel3(virConnectPtr dconn,
                                  virStreamPtr st,
                                  const char *cookiein,
                                  int cookieinlen,
                                  char **cookieout,
                                  int *cookieoutlen,
                                  unsigned long flags,
                                  const char *dname,
                                  unsigned long resource,
                                  const char *dom_xml)
{
    struct private_data *priv = dconn->privateData;
    int rv = -1;
    remote_domain_migrate_prepare_tunnel3_args args;
    remote_domain_migrate_prepare_tunnel3_ret ret;
    virNetClientStreamPtr netst;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));
    memset(&ret, 0, sizeof(ret));

    if (!(netst = virNetClientStreamNew(priv->remoteProgram,
                                        REMOTE_PROC_DOMAIN_MIGRATE_PREPARE_TUNNEL3,
                                        priv->counter)))
        goto done;

    if (virNetClientAddStream(priv->client, netst) < 0) {
        virNetClientStreamFree(netst);
        goto done;
    }

    st->driver = &remoteStreamDrv;
    st->privateData = netst;

    args.cookie_in.cookie_in_val = (char *)cookiein;
    args.cookie_in.cookie_in_len = cookieinlen;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.resource = resource;
    args.dom_xml = (char *) dom_xml;

    if (call(dconn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PREPARE_TUNNEL3,
             (xdrproc_t) xdr_remote_domain_migrate_prepare_tunnel3_args, (char *) &args,
             (xdrproc_t) xdr_remote_domain_migrate_prepare_tunnel3_ret, (char *) &ret) == -1) {
        virNetClientRemoveStream(priv->client, netst);
        virNetClientStreamFree(netst);
        goto done;
    }

    if (ret.cookie_out.cookie_out_len > 0) {
        if (!cookieout || !cookieoutlen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookieout or cookieoutlen"));
            goto error;
        }
        *cookieout = ret.cookie_out.cookie_out_val; /* Caller frees. */
        *cookieoutlen = ret.cookie_out.cookie_out_len;
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;

error:
    VIR_FREE(ret.cookie_out.cookie_out_val);
    goto done;
}


static int
remoteDomainMigratePerform3(virDomainPtr dom,
                            const char *xmlin,
                            const char *cookiein,
                            int cookieinlen,
                            char **cookieout,
                            int *cookieoutlen,
                            const char *dconnuri,
                            const char *uri,
                            unsigned long flags,
                            const char *dname,
                            unsigned long resource)
{
    int rv = -1;
    remote_domain_migrate_perform3_args args;
    remote_domain_migrate_perform3_ret ret;
    struct private_data *priv = dom->conn->privateData;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));
    memset(&ret, 0, sizeof(ret));

    make_nonnull_domain(&args.dom, dom);

    args.xmlin = xmlin == NULL ? NULL : (char **) &xmlin;
    args.cookie_in.cookie_in_val = (char *)cookiein;
    args.cookie_in.cookie_in_len = cookieinlen;
    args.flags = flags;
    args.dname = dname == NULL ? NULL : (char **) &dname;
    args.uri = uri == NULL ? NULL : (char **) &uri;
    args.dconnuri = dconnuri == NULL ? NULL : (char **) &dconnuri;
    args.resource = resource;

    if (call (dom->conn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_PERFORM3,
              (xdrproc_t) xdr_remote_domain_migrate_perform3_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_perform3_ret, (char *) &ret) == -1)
        goto done;

    if (ret.cookie_out.cookie_out_len > 0) {
        if (!cookieout || !cookieoutlen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookieout or cookieoutlen"));
            goto error;
        }
        *cookieout = ret.cookie_out.cookie_out_val; /* Caller frees. */
        *cookieoutlen = ret.cookie_out.cookie_out_len;
    }

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;

error:
    VIR_FREE(ret.cookie_out.cookie_out_val);
    goto done;
}


static virDomainPtr
remoteDomainMigrateFinish3(virConnectPtr dconn,
                           const char *dname,
                           const char *cookiein,
                           int cookieinlen,
                           char **cookieout,
                           int *cookieoutlen,
                           const char *dconnuri,
                           const char *uri,
                           unsigned long flags,
                           int cancelled)
{
    remote_domain_migrate_finish3_args args;
    remote_domain_migrate_finish3_ret ret;
    struct private_data *priv = dconn->privateData;
    virDomainPtr rv = NULL;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));
    memset(&ret, 0, sizeof(ret));

    args.cookie_in.cookie_in_val = (char *)cookiein;
    args.cookie_in.cookie_in_len = cookieinlen;
    args.dname = (char *) dname;
    args.uri = uri == NULL ? NULL : (char **) &uri;
    args.dconnuri = dconnuri == NULL ? NULL : (char **) &dconnuri;
    args.flags = flags;
    args.cancelled = cancelled;

    if (call (dconn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_FINISH3,
              (xdrproc_t) xdr_remote_domain_migrate_finish3_args, (char *) &args,
              (xdrproc_t) xdr_remote_domain_migrate_finish3_ret, (char *) &ret) == -1)
        goto done;

    rv = get_nonnull_domain(dconn, ret.dom);

    if (ret.cookie_out.cookie_out_len > 0) {
        if (!cookieout || !cookieoutlen) {
            remoteError(VIR_ERR_INTERNAL_ERROR, "%s",
                        _("caller ignores cookieout or cookieoutlen"));
            goto error;
        }
        *cookieout = ret.cookie_out.cookie_out_val; /* Caller frees. */
        *cookieoutlen = ret.cookie_out.cookie_out_len;
        ret.cookie_out.cookie_out_val = NULL;
        ret.cookie_out.cookie_out_len = 0;
    }

    xdr_free ((xdrproc_t) &xdr_remote_domain_migrate_finish3_ret, (char *) &ret);

done:
    remoteDriverUnlock(priv);
    return rv;

error:
    VIR_FREE(ret.cookie_out.cookie_out_val);
    goto done;
}


static int
remoteDomainMigrateConfirm3(virDomainPtr domain,
                            const char *cookiein,
                            int cookieinlen,
                            unsigned long flags,
                            int cancelled)
{
    int rv = -1;
    remote_domain_migrate_confirm3_args args;
    struct private_data *priv = domain->conn->privateData;

    remoteDriverLock(priv);

    memset(&args, 0, sizeof(args));

    make_nonnull_domain (&args.dom, domain);
    args.cookie_in.cookie_in_len = cookieinlen;
    args.cookie_in.cookie_in_val = (char *) cookiein;
    args.flags = flags;
    args.cancelled = cancelled;

    if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_MIGRATE_CONFIRM3,
              (xdrproc_t) xdr_remote_domain_migrate_confirm3_args, (char *) &args,
              (xdrproc_t) xdr_void, (char *) NULL) == -1)
        goto done;

    rv = 0;

done:
    remoteDriverUnlock(priv);
    return rv;
}


#include "remote_client_bodies.h"
#include "qemu_client_bodies.h"

/*
 * Serial a set of arguments into a method call message,
 * send that to the server and wait for reply
 */
static int
call (virConnectPtr conn ATTRIBUTE_UNUSED,
      struct private_data *priv,
      unsigned int flags,
      int proc_nr,
      xdrproc_t args_filter, char *args,
      xdrproc_t ret_filter, char *ret)
{
    int rv;
    virNetClientProgramPtr prog = flags & REMOTE_CALL_QEMU ? priv->qemuProgram : priv->remoteProgram;
    int counter = priv->counter++;
    virNetClientPtr client = priv->client;
    priv->localUses++;

    /* Unlock, so that if we get any async events/stream data
     * while processing the RPC, we don't deadlock when our
     * callbacks for those are invoked
     */
    remoteDriverUnlock(priv);
    rv = virNetClientProgramCall(prog,
                                 client,
                                 counter,
                                 proc_nr,
                                 args_filter, args,
                                 ret_filter, ret);
    remoteDriverLock(priv);
    priv->localUses--;

    return rv;
}


static void remoteDomainEventDispatchFunc(virConnectPtr conn,
                                          virDomainEventPtr event,
                                          virConnectDomainEventGenericCallback cb,
                                          void *cbopaque,
                                          void *opaque)
{
    struct private_data *priv = opaque;

    /* Drop the lock whle dispatching, for sake of re-entrancy */
    remoteDriverUnlock(priv);
    VIR_DEBUG("Dispatch event %p %p", event, conn);
    virDomainEventDispatchDefaultFunc(conn, event, cb, cbopaque, NULL);
    remoteDriverLock(priv);
}

static void
remoteDomainEventQueueFlush(int timer ATTRIBUTE_UNUSED, void *opaque)
{
    virConnectPtr conn = opaque;
    struct private_data *priv = conn->privateData;


    remoteDriverLock(priv);
    VIR_DEBUG("Event queue flush %p", conn);

    virDomainEventStateFlush(priv->domainEventState,
                             remoteDomainEventDispatchFunc,
                             priv);
    remoteDriverUnlock(priv);
}

static void
remoteDomainEventQueue(struct private_data *priv, virDomainEventPtr event)
{
    virDomainEventStateQueue(priv->domainEventState, event);
}

/* get_nonnull_domain and get_nonnull_network turn an on-wire
 * (name, uuid) pair into virDomainPtr or virNetworkPtr object.
 * These can return NULL if underlying memory allocations fail,
 * but if they do then virterror_internal.has been set.
 */
static virDomainPtr
get_nonnull_domain (virConnectPtr conn, remote_nonnull_domain domain)
{
    virDomainPtr dom;
    dom = virGetDomain (conn, domain.name, BAD_CAST domain.uuid);
    if (dom) dom->id = domain.id;
    return dom;
}

static virNetworkPtr
get_nonnull_network (virConnectPtr conn, remote_nonnull_network network)
{
    return virGetNetwork (conn, network.name, BAD_CAST network.uuid);
}

static virInterfacePtr
get_nonnull_interface (virConnectPtr conn, remote_nonnull_interface iface)
{
    return virGetInterface (conn, iface.name, iface.mac);
}

static virStoragePoolPtr
get_nonnull_storage_pool (virConnectPtr conn, remote_nonnull_storage_pool pool)
{
    return virGetStoragePool (conn, pool.name, BAD_CAST pool.uuid);
}

static virStorageVolPtr
get_nonnull_storage_vol (virConnectPtr conn, remote_nonnull_storage_vol vol)
{
    return virGetStorageVol (conn, vol.pool, vol.name, vol.key);
}

static virNodeDevicePtr
get_nonnull_node_device (virConnectPtr conn, remote_nonnull_node_device dev)
{
    return virGetNodeDevice(conn, dev.name);
}

static virSecretPtr
get_nonnull_secret (virConnectPtr conn, remote_nonnull_secret secret)
{
    return virGetSecret(conn, BAD_CAST secret.uuid, secret.usageType, secret.usageID);
}

static virNWFilterPtr
get_nonnull_nwfilter (virConnectPtr conn, remote_nonnull_nwfilter nwfilter)
{
    return virGetNWFilter (conn, nwfilter.name, BAD_CAST nwfilter.uuid);
}

static virDomainSnapshotPtr
get_nonnull_domain_snapshot (virDomainPtr domain, remote_nonnull_domain_snapshot snapshot)
{
    return virGetDomainSnapshot(domain, snapshot.name);
}


/* Make remote_nonnull_domain and remote_nonnull_network. */
static void
make_nonnull_domain (remote_nonnull_domain *dom_dst, virDomainPtr dom_src)
{
    dom_dst->id = dom_src->id;
    dom_dst->name = dom_src->name;
    memcpy (dom_dst->uuid, dom_src->uuid, VIR_UUID_BUFLEN);
}

static void
make_nonnull_network (remote_nonnull_network *net_dst, virNetworkPtr net_src)
{
    net_dst->name = net_src->name;
    memcpy (net_dst->uuid, net_src->uuid, VIR_UUID_BUFLEN);
}

static void
make_nonnull_interface (remote_nonnull_interface *interface_dst,
                        virInterfacePtr interface_src)
{
    interface_dst->name = interface_src->name;
    interface_dst->mac = interface_src->mac;
}

static void
make_nonnull_storage_pool (remote_nonnull_storage_pool *pool_dst, virStoragePoolPtr pool_src)
{
    pool_dst->name = pool_src->name;
    memcpy (pool_dst->uuid, pool_src->uuid, VIR_UUID_BUFLEN);
}

static void
make_nonnull_storage_vol (remote_nonnull_storage_vol *vol_dst, virStorageVolPtr vol_src)
{
    vol_dst->pool = vol_src->pool;
    vol_dst->name = vol_src->name;
    vol_dst->key = vol_src->key;
}

static void
make_nonnull_secret (remote_nonnull_secret *secret_dst, virSecretPtr secret_src)
{
    memcpy (secret_dst->uuid, secret_src->uuid, VIR_UUID_BUFLEN);
    secret_dst->usageType = secret_src->usageType;
    secret_dst->usageID = secret_src->usageID;
}

static void
make_nonnull_nwfilter (remote_nonnull_nwfilter *nwfilter_dst, virNWFilterPtr nwfilter_src)
{
    nwfilter_dst->name = nwfilter_src->name;
    memcpy (nwfilter_dst->uuid, nwfilter_src->uuid, VIR_UUID_BUFLEN);
}

static void
make_nonnull_domain_snapshot (remote_nonnull_domain_snapshot *snapshot_dst, virDomainSnapshotPtr snapshot_src)
{
    snapshot_dst->name = snapshot_src->name;
    make_nonnull_domain(&snapshot_dst->dom, snapshot_src->domain);
}

/*----------------------------------------------------------------------*/

unsigned long remoteVersion(void)
{
    return REMOTE_PROTOCOL_VERSION;
}

static virDriver remote_driver = {
    .no = VIR_DRV_REMOTE,
    .name = "remote",
    .open = remoteOpen, /* 0.3.0 */
    .close = remoteClose, /* 0.3.0 */
    .supports_feature = remoteSupportsFeature, /* 0.3.0 */
    .type = remoteType, /* 0.3.0 */
    .version = remoteGetVersion, /* 0.3.0 */
    .libvirtVersion = remoteGetLibVersion, /* 0.7.3 */
    .getHostname = remoteGetHostname, /* 0.3.0 */
    .getSysinfo = remoteGetSysinfo, /* 0.8.8 */
    .getMaxVcpus = remoteGetMaxVcpus, /* 0.3.0 */
    .nodeGetInfo = remoteNodeGetInfo, /* 0.3.0 */
    .getCapabilities = remoteGetCapabilities, /* 0.3.0 */
    .listDomains = remoteListDomains, /* 0.3.0 */
    .numOfDomains = remoteNumOfDomains, /* 0.3.0 */
    .domainCreateXML = remoteDomainCreateXML, /* 0.3.0 */
    .domainLookupByID = remoteDomainLookupByID, /* 0.3.0 */
    .domainLookupByUUID = remoteDomainLookupByUUID, /* 0.3.0 */
    .domainLookupByName = remoteDomainLookupByName, /* 0.3.0 */
    .domainSuspend = remoteDomainSuspend, /* 0.3.0 */
    .domainResume = remoteDomainResume, /* 0.3.0 */
    .domainShutdown = remoteDomainShutdown, /* 0.3.0 */
    .domainReboot = remoteDomainReboot, /* 0.3.0 */
    .domainDestroy = remoteDomainDestroy, /* 0.3.0 */
    .domainDestroyFlags = remoteDomainDestroyFlags, /* 0.9.4 */
    .domainGetOSType = remoteDomainGetOSType, /* 0.3.0 */
    .domainGetMaxMemory = remoteDomainGetMaxMemory, /* 0.3.0 */
    .domainSetMaxMemory = remoteDomainSetMaxMemory, /* 0.3.0 */
    .domainSetMemory = remoteDomainSetMemory, /* 0.3.0 */
    .domainSetMemoryFlags = remoteDomainSetMemoryFlags, /* 0.9.0 */
    .domainSetMemoryParameters = remoteDomainSetMemoryParameters, /* 0.8.5 */
    .domainGetMemoryParameters = remoteDomainGetMemoryParameters, /* 0.8.5 */
    .domainSetBlkioParameters = remoteDomainSetBlkioParameters, /* 0.9.0 */
    .domainGetBlkioParameters = remoteDomainGetBlkioParameters, /* 0.9.0 */
    .domainGetInfo = remoteDomainGetInfo, /* 0.3.0 */
    .domainGetState = remoteDomainGetState, /* 0.9.2 */
    .domainGetControlInfo = remoteDomainGetControlInfo, /* 0.9.3 */
    .domainSave = remoteDomainSave, /* 0.3.0 */
    .domainSaveFlags = remoteDomainSaveFlags, /* 0.9.4 */
    .domainRestore = remoteDomainRestore, /* 0.3.0 */
    .domainRestoreFlags = remoteDomainRestoreFlags, /* 0.9.4 */
    .domainSaveImageGetXMLDesc = remoteDomainSaveImageGetXMLDesc, /* 0.9.4 */
    .domainSaveImageDefineXML = remoteDomainSaveImageDefineXML, /* 0.9.4 */
    .domainCoreDump = remoteDomainCoreDump, /* 0.3.0 */
    .domainScreenshot = remoteDomainScreenshot, /* 0.9.2 */
    .domainSetVcpus = remoteDomainSetVcpus, /* 0.3.0 */
    .domainSetVcpusFlags = remoteDomainSetVcpusFlags, /* 0.8.5 */
    .domainGetVcpusFlags = remoteDomainGetVcpusFlags, /* 0.8.5 */
    .domainPinVcpu = remoteDomainPinVcpu, /* 0.3.0 */
    .domainPinVcpuFlags = remoteDomainPinVcpuFlags, /* 0.9.3 */
    .domainGetVcpuPinInfo = remoteDomainGetVcpuPinInfo, /* 0.9.3 */
    .domainGetVcpus = remoteDomainGetVcpus, /* 0.3.0 */
    .domainGetMaxVcpus = remoteDomainGetMaxVcpus, /* 0.3.0 */
    .domainGetSecurityLabel = remoteDomainGetSecurityLabel, /* 0.6.1 */
    .nodeGetSecurityModel = remoteNodeGetSecurityModel, /* 0.6.1 */
    .domainGetXMLDesc = remoteDomainGetXMLDesc, /* 0.3.0 */
    .domainXMLFromNative = remoteDomainXMLFromNative, /* 0.6.4 */
    .domainXMLToNative = remoteDomainXMLToNative, /* 0.6.4 */
    .listDefinedDomains = remoteListDefinedDomains, /* 0.3.0 */
    .numOfDefinedDomains = remoteNumOfDefinedDomains, /* 0.3.0 */
    .domainCreate = remoteDomainCreate, /* 0.3.0 */
    .domainCreateWithFlags = remoteDomainCreateWithFlags, /* 0.8.2 */
    .domainDefineXML = remoteDomainDefineXML, /* 0.3.0 */
    .domainUndefine = remoteDomainUndefine, /* 0.3.0 */
    .domainUndefineFlags = remoteDomainUndefineFlags, /* 0.9.4 */
    .domainAttachDevice = remoteDomainAttachDevice, /* 0.3.0 */
    .domainAttachDeviceFlags = remoteDomainAttachDeviceFlags, /* 0.7.7 */
    .domainDetachDevice = remoteDomainDetachDevice, /* 0.3.0 */
    .domainDetachDeviceFlags = remoteDomainDetachDeviceFlags, /* 0.7.7 */
    .domainUpdateDeviceFlags = remoteDomainUpdateDeviceFlags, /* 0.8.0 */
    .domainGetAutostart = remoteDomainGetAutostart, /* 0.3.0 */
    .domainSetAutostart = remoteDomainSetAutostart, /* 0.3.0 */
    .domainGetSchedulerType = remoteDomainGetSchedulerType, /* 0.3.0 */
    .domainGetSchedulerParameters = remoteDomainGetSchedulerParameters, /* 0.3.0 */
    .domainGetSchedulerParametersFlags = remoteDomainGetSchedulerParametersFlags, /* 0.9.2 */
    .domainSetSchedulerParameters = remoteDomainSetSchedulerParameters, /* 0.3.0 */
    .domainSetSchedulerParametersFlags = remoteDomainSetSchedulerParametersFlags, /* 0.9.2 */
    .domainMigratePrepare = remoteDomainMigratePrepare, /* 0.3.2 */
    .domainMigratePerform = remoteDomainMigratePerform, /* 0.3.2 */
    .domainMigrateFinish = remoteDomainMigrateFinish, /* 0.3.2 */
    .domainBlockStats = remoteDomainBlockStats, /* 0.3.2 */
    .domainInterfaceStats = remoteDomainInterfaceStats, /* 0.3.2 */
    .domainMemoryStats = remoteDomainMemoryStats, /* 0.7.5 */
    .domainBlockPeek = remoteDomainBlockPeek, /* 0.4.2 */
    .domainMemoryPeek = remoteDomainMemoryPeek, /* 0.4.2 */
    .domainGetBlockInfo = remoteDomainGetBlockInfo, /* 0.8.1 */
    .nodeGetCPUStats = remoteNodeGetCPUStats, /* 0.9.3 */
    .nodeGetMemoryStats = remoteNodeGetMemoryStats, /* 0.9.3 */
    .nodeGetCellsFreeMemory = remoteNodeGetCellsFreeMemory, /* 0.3.3 */
    .nodeGetFreeMemory = remoteNodeGetFreeMemory, /* 0.3.3 */
    .domainEventRegister = remoteDomainEventRegister, /* 0.5.0 */
    .domainEventDeregister = remoteDomainEventDeregister, /* 0.5.0 */
    .domainMigratePrepare2 = remoteDomainMigratePrepare2, /* 0.5.0 */
    .domainMigrateFinish2 = remoteDomainMigrateFinish2, /* 0.5.0 */
    .nodeDeviceDettach = remoteNodeDeviceDettach, /* 0.6.1 */
    .nodeDeviceReAttach = remoteNodeDeviceReAttach, /* 0.6.1 */
    .nodeDeviceReset = remoteNodeDeviceReset, /* 0.6.1 */
    .domainMigratePrepareTunnel = remoteDomainMigratePrepareTunnel, /* 0.7.2 */
    .isEncrypted = remoteIsEncrypted, /* 0.7.3 */
    .isSecure = remoteIsSecure, /* 0.7.3 */
    .domainIsActive = remoteDomainIsActive, /* 0.7.3 */
    .domainIsPersistent = remoteDomainIsPersistent, /* 0.7.3 */
    .domainIsUpdated = remoteDomainIsUpdated, /* 0.8.6 */
    .cpuCompare = remoteCPUCompare, /* 0.7.5 */
    .cpuBaseline = remoteCPUBaseline, /* 0.7.7 */
    .domainGetJobInfo = remoteDomainGetJobInfo, /* 0.7.7 */
    .domainAbortJob = remoteDomainAbortJob, /* 0.7.7 */
    .domainMigrateSetMaxDowntime = remoteDomainMigrateSetMaxDowntime, /* 0.8.0 */
    .domainMigrateSetMaxSpeed = remoteDomainMigrateSetMaxSpeed, /* 0.9.0 */
    .domainEventRegisterAny = remoteDomainEventRegisterAny, /* 0.8.0 */
    .domainEventDeregisterAny = remoteDomainEventDeregisterAny, /* 0.8.0 */
    .domainManagedSave = remoteDomainManagedSave, /* 0.8.0 */
    .domainHasManagedSaveImage = remoteDomainHasManagedSaveImage, /* 0.8.0 */
    .domainManagedSaveRemove = remoteDomainManagedSaveRemove, /* 0.8.0 */
    .domainSnapshotCreateXML = remoteDomainSnapshotCreateXML, /* 0.8.0 */
    .domainSnapshotGetXMLDesc = remoteDomainSnapshotGetXMLDesc, /* 0.8.0 */
    .domainSnapshotNum = remoteDomainSnapshotNum, /* 0.8.0 */
    .domainSnapshotListNames = remoteDomainSnapshotListNames, /* 0.8.0 */
    .domainSnapshotLookupByName = remoteDomainSnapshotLookupByName, /* 0.8.0 */
    .domainHasCurrentSnapshot = remoteDomainHasCurrentSnapshot, /* 0.8.0 */
    .domainSnapshotCurrent = remoteDomainSnapshotCurrent, /* 0.8.0 */
    .domainRevertToSnapshot = remoteDomainRevertToSnapshot, /* 0.8.0 */
    .domainSnapshotDelete = remoteDomainSnapshotDelete, /* 0.8.0 */
    .qemuDomainMonitorCommand = remoteQemuDomainMonitorCommand, /* 0.8.3 */
    .qemuDomainAttach = qemuDomainAttach, /* 0.9.4 */
    .domainOpenConsole = remoteDomainOpenConsole, /* 0.8.6 */
    .domainInjectNMI = remoteDomainInjectNMI, /* 0.9.2 */
    .domainMigrateBegin3 = remoteDomainMigrateBegin3, /* 0.9.2 */
    .domainMigratePrepare3 = remoteDomainMigratePrepare3, /* 0.9.2 */
    .domainMigratePrepareTunnel3 = remoteDomainMigratePrepareTunnel3, /* 0.9.2 */
    .domainMigratePerform3 = remoteDomainMigratePerform3, /* 0.9.2 */
    .domainMigrateFinish3 = remoteDomainMigrateFinish3, /* 0.9.2 */
    .domainMigrateConfirm3 = remoteDomainMigrateConfirm3, /* 0.9.2 */
    .domainSendKey = remoteDomainSendKey, /* 0.9.3 */
    .domainBlockJobAbort = remoteDomainBlockJobAbort, /* 0.9.4 */
    .domainGetBlockJobInfo = remoteDomainGetBlockJobInfo, /* 0.9.4 */
    .domainBlockJobSetSpeed = remoteDomainBlockJobSetSpeed, /* 0.9.4 */
    .domainBlockPull = remoteDomainBlockPull, /* 0.9.4 */
};

static virNetworkDriver network_driver = {
    .name = "remote",
    .open = remoteNetworkOpen, /* 0.3.0 */
    .close = remoteNetworkClose, /* 0.3.0 */
    .numOfNetworks = remoteNumOfNetworks, /* 0.3.0 */
    .listNetworks = remoteListNetworks, /* 0.3.0 */
    .numOfDefinedNetworks = remoteNumOfDefinedNetworks, /* 0.3.0 */
    .listDefinedNetworks = remoteListDefinedNetworks, /* 0.3.0 */
    .networkLookupByUUID = remoteNetworkLookupByUUID, /* 0.3.0 */
    .networkLookupByName = remoteNetworkLookupByName, /* 0.3.0 */
    .networkCreateXML = remoteNetworkCreateXML, /* 0.3.0 */
    .networkDefineXML = remoteNetworkDefineXML, /* 0.3.0 */
    .networkUndefine = remoteNetworkUndefine, /* 0.3.0 */
    .networkCreate = remoteNetworkCreate, /* 0.3.0 */
    .networkDestroy = remoteNetworkDestroy, /* 0.3.0 */
    .networkGetXMLDesc = remoteNetworkGetXMLDesc, /* 0.3.0 */
    .networkGetBridgeName = remoteNetworkGetBridgeName, /* 0.3.0 */
    .networkGetAutostart = remoteNetworkGetAutostart, /* 0.3.0 */
    .networkSetAutostart = remoteNetworkSetAutostart, /* 0.3.0 */
    .networkIsActive = remoteNetworkIsActive, /* 0.7.3 */
    .networkIsPersistent = remoteNetworkIsPersistent, /* 0.7.3 */
};

static virInterfaceDriver interface_driver = {
    .name = "remote",
    .open = remoteInterfaceOpen, /* 0.7.2 */
    .close = remoteInterfaceClose, /* 0.7.2 */
    .numOfInterfaces = remoteNumOfInterfaces, /* 0.7.2 */
    .listInterfaces = remoteListInterfaces, /* 0.7.2 */
    .numOfDefinedInterfaces = remoteNumOfDefinedInterfaces, /* 0.7.2 */
    .listDefinedInterfaces = remoteListDefinedInterfaces, /* 0.7.2 */
    .interfaceLookupByName = remoteInterfaceLookupByName, /* 0.7.2 */
    .interfaceLookupByMACString = remoteInterfaceLookupByMACString, /* 0.7.2 */
    .interfaceGetXMLDesc = remoteInterfaceGetXMLDesc, /* 0.7.2 */
    .interfaceDefineXML = remoteInterfaceDefineXML, /* 0.7.2 */
    .interfaceUndefine = remoteInterfaceUndefine, /* 0.7.2 */
    .interfaceCreate = remoteInterfaceCreate, /* 0.7.2 */
    .interfaceDestroy = remoteInterfaceDestroy, /* 0.7.2 */
    .interfaceIsActive = remoteInterfaceIsActive, /* 0.7.3 */
    .interfaceChangeBegin = remoteInterfaceChangeBegin, /* 0.9.2 */
    .interfaceChangeCommit = remoteInterfaceChangeCommit, /* 0.9.2 */
    .interfaceChangeRollback = remoteInterfaceChangeRollback, /* 0.9.2 */
};

static virStorageDriver storage_driver = {
    .name = "remote",
    .open = remoteStorageOpen, /* 0.4.1 */
    .close = remoteStorageClose, /* 0.4.1 */
    .numOfPools = remoteNumOfStoragePools, /* 0.4.1 */
    .listPools = remoteListStoragePools, /* 0.4.1 */
    .numOfDefinedPools = remoteNumOfDefinedStoragePools, /* 0.4.1 */
    .listDefinedPools = remoteListDefinedStoragePools, /* 0.4.1 */
    .findPoolSources = remoteFindStoragePoolSources, /* 0.4.5 */
    .poolLookupByName = remoteStoragePoolLookupByName, /* 0.4.1 */
    .poolLookupByUUID = remoteStoragePoolLookupByUUID, /* 0.4.1 */
    .poolLookupByVolume = remoteStoragePoolLookupByVolume, /* 0.4.1 */
    .poolCreateXML = remoteStoragePoolCreateXML, /* 0.4.1 */
    .poolDefineXML = remoteStoragePoolDefineXML, /* 0.4.1 */
    .poolBuild = remoteStoragePoolBuild, /* 0.4.1 */
    .poolUndefine = remoteStoragePoolUndefine, /* 0.4.1 */
    .poolCreate = remoteStoragePoolCreate, /* 0.4.1 */
    .poolDestroy = remoteStoragePoolDestroy, /* 0.4.1 */
    .poolDelete = remoteStoragePoolDelete, /* 0.4.1 */
    .poolRefresh = remoteStoragePoolRefresh, /* 0.4.1 */
    .poolGetInfo = remoteStoragePoolGetInfo, /* 0.4.1 */
    .poolGetXMLDesc = remoteStoragePoolGetXMLDesc, /* 0.4.1 */
    .poolGetAutostart = remoteStoragePoolGetAutostart, /* 0.4.1 */
    .poolSetAutostart = remoteStoragePoolSetAutostart, /* 0.4.1 */
    .poolNumOfVolumes = remoteStoragePoolNumOfVolumes, /* 0.4.1 */
    .poolListVolumes = remoteStoragePoolListVolumes, /* 0.4.1 */

    .volLookupByName = remoteStorageVolLookupByName, /* 0.4.1 */
    .volLookupByKey = remoteStorageVolLookupByKey, /* 0.4.1 */
    .volLookupByPath = remoteStorageVolLookupByPath, /* 0.4.1 */
    .volCreateXML = remoteStorageVolCreateXML, /* 0.4.1 */
    .volCreateXMLFrom = remoteStorageVolCreateXMLFrom, /* 0.6.4 */
    .volDownload = remoteStorageVolDownload, /* 0.9.0 */
    .volUpload = remoteStorageVolUpload, /* 0.9.0 */
    .volDelete = remoteStorageVolDelete, /* 0.4.1 */
    .volWipe = remoteStorageVolWipe, /* 0.8.0 */
    .volGetInfo = remoteStorageVolGetInfo, /* 0.4.1 */
    .volGetXMLDesc = remoteStorageVolGetXMLDesc, /* 0.4.1 */
    .volGetPath = remoteStorageVolGetPath, /* 0.4.1 */
    .poolIsActive = remoteStoragePoolIsActive, /* 0.7.3 */
    .poolIsPersistent = remoteStoragePoolIsPersistent, /* 0.7.3 */
};

static virSecretDriver secret_driver = {
    .name = "remote",
    .open = remoteSecretOpen, /* 0.7.1 */
    .close = remoteSecretClose, /* 0.7.1 */
    .numOfSecrets = remoteNumOfSecrets, /* 0.7.1 */
    .listSecrets = remoteListSecrets, /* 0.7.1 */
    .lookupByUUID = remoteSecretLookupByUUID, /* 0.7.1 */
    .lookupByUsage = remoteSecretLookupByUsage, /* 0.7.1 */
    .defineXML = remoteSecretDefineXML, /* 0.7.1 */
    .getXMLDesc = remoteSecretGetXMLDesc, /* 0.7.1 */
    .setValue = remoteSecretSetValue, /* 0.7.1 */
    .getValue = remoteSecretGetValue, /* 0.7.1 */
    .undefine = remoteSecretUndefine /* 0.7.1 */
};

static virDeviceMonitor dev_monitor = {
    .name = "remote",
    .open = remoteDevMonOpen, /* 0.5.0 */
    .close = remoteDevMonClose, /* 0.5.0 */
    .numOfDevices = remoteNodeNumOfDevices, /* 0.5.0 */
    .listDevices = remoteNodeListDevices, /* 0.5.0 */
    .deviceLookupByName = remoteNodeDeviceLookupByName, /* 0.5.0 */
    .deviceGetXMLDesc = remoteNodeDeviceGetXMLDesc, /* 0.5.0 */
    .deviceGetParent = remoteNodeDeviceGetParent, /* 0.5.0 */
    .deviceNumOfCaps = remoteNodeDeviceNumOfCaps, /* 0.5.0 */
    .deviceListCaps = remoteNodeDeviceListCaps, /* 0.5.0 */
    .deviceCreateXML = remoteNodeDeviceCreateXML, /* 0.6.3 */
    .deviceDestroy = remoteNodeDeviceDestroy /* 0.6.3 */
};

static virNWFilterDriver nwfilter_driver = {
    .name = "remote",
    .open = remoteNWFilterOpen, /* 0.8.0 */
    .close = remoteNWFilterClose, /* 0.8.0 */
    .nwfilterLookupByUUID = remoteNWFilterLookupByUUID, /* 0.8.0 */
    .nwfilterLookupByName = remoteNWFilterLookupByName, /* 0.8.0 */
    .getXMLDesc           = remoteNWFilterGetXMLDesc, /* 0.8.0 */
    .defineXML            = remoteNWFilterDefineXML, /* 0.8.0 */
    .undefine             = remoteNWFilterUndefine, /* 0.8.0 */
    .numOfNWFilters       = remoteNumOfNWFilters, /* 0.8.0 */
    .listNWFilters        = remoteListNWFilters, /* 0.8.0 */
};


#ifdef WITH_LIBVIRTD
static virStateDriver state_driver = {
    .name = "Remote",
    .initialize = remoteStartup,
};
#endif


/** remoteRegister:
 *
 * Register driver with libvirt driver system.
 *
 * Returns -1 on error.
 */
int
remoteRegister (void)
{
    if (virRegisterDriver (&remote_driver) == -1) return -1;
    if (virRegisterNetworkDriver (&network_driver) == -1) return -1;
    if (virRegisterInterfaceDriver (&interface_driver) == -1) return -1;
    if (virRegisterStorageDriver (&storage_driver) == -1) return -1;
    if (virRegisterDeviceMonitor (&dev_monitor) == -1) return -1;
    if (virRegisterSecretDriver (&secret_driver) == -1) return -1;
    if (virRegisterNWFilterDriver(&nwfilter_driver) == -1) return -1;
#ifdef WITH_LIBVIRTD
    if (virRegisterStateDriver (&state_driver) == -1) return -1;
#endif

    return 0;
}