mirror of
https://gitlab.com/libvirt/libvirt.git
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1a38fbaa86
Enable libvirt users to modify logging filters of a daemon from outside. Signed-off-by: Erik Skultety <eskultet@redhat.com>
491 lines
15 KiB
C
491 lines
15 KiB
C
/*
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* admin.c: handlers for admin RPC method calls
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*
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* Copyright (C) 2014-2016 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* Author: Martin Kletzander <mkletzan@redhat.com>
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*/
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#include <config.h>
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#include "internal.h"
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#include "libvirtd.h"
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#include "libvirt_internal.h"
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#include "admin_protocol.h"
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#include "admin.h"
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#include "admin_server.h"
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#include "datatypes.h"
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#include "viralloc.h"
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#include "virerror.h"
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#include "virlog.h"
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#include "virnetdaemon.h"
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#include "virnetserver.h"
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#include "virstring.h"
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#include "virthreadjob.h"
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#include "virtypedparam.h"
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#define VIR_FROM_THIS VIR_FROM_ADMIN
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VIR_LOG_INIT("daemon.admin");
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void
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remoteAdmClientFreeFunc(void *data)
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{
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struct daemonAdmClientPrivate *priv = data;
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virMutexDestroy(&priv->lock);
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virObjectUnref(priv->dmn);
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VIR_FREE(priv);
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}
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void *
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remoteAdmClientInitHook(virNetServerClientPtr client ATTRIBUTE_UNUSED,
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void *opaque)
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{
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struct daemonAdmClientPrivate *priv;
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if (VIR_ALLOC(priv) < 0)
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return NULL;
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if (virMutexInit(&priv->lock) < 0) {
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VIR_FREE(priv);
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virReportSystemError(errno, "%s", _("unable to init mutex"));
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return NULL;
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}
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/*
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* We don't necessarily need to ref this object right now as there
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* must be one ref being held throughout the life of the daemon,
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* but let's just be safe for future.
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*/
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priv->dmn = virObjectRef(opaque);
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return priv;
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}
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/* Helpers */
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static virNetServerPtr
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get_nonnull_server(virNetDaemonPtr dmn, admin_nonnull_server srv)
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{
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return virNetDaemonGetServer(dmn, srv.name);
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}
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static void
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make_nonnull_server(admin_nonnull_server *srv_dst,
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virNetServerPtr srv_src)
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{
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ignore_value(VIR_STRDUP_QUIET(srv_dst->name, virNetServerGetName(srv_src)));
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}
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static virNetServerClientPtr
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get_nonnull_client(virNetServerPtr srv, admin_nonnull_client clnt)
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{
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return virNetServerGetClient(srv, clnt.id);
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}
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static void
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make_nonnull_client(admin_nonnull_client *clt_dst,
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virNetServerClientPtr clt_src)
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{
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clt_dst->id = virNetServerClientGetID(clt_src);
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clt_dst->timestamp = virNetServerClientGetTimestamp(clt_src);
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clt_dst->transport = virNetServerClientGetTransport(clt_src);
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}
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/* Functions */
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static int
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adminDispatchConnectOpen(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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struct admin_connect_open_args *args)
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{
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unsigned int flags;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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int ret = -1;
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VIR_DEBUG("priv=%p dmn=%p", priv, priv->dmn);
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virMutexLock(&priv->lock);
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flags = args->flags;
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virCheckFlagsGoto(0, cleanup);
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ret = 0;
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cleanup:
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if (ret < 0)
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virNetMessageSaveError(rerr);
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virMutexUnlock(&priv->lock);
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return ret;
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}
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static int
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adminDispatchConnectClose(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED)
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{
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virNetServerClientDelayedClose(client);
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return 0;
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}
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static int
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adminConnectGetLibVersion(virNetDaemonPtr dmn ATTRIBUTE_UNUSED,
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unsigned long long *libVer)
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{
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if (libVer)
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*libVer = LIBVIR_VERSION_NUMBER;
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return 0;
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}
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static int
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adminDispatchServerGetThreadpoolParameters(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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struct admin_server_get_threadpool_parameters_args *args,
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struct admin_server_get_threadpool_parameters_ret *ret)
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{
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int rv = -1;
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virNetServerPtr srv = NULL;
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virTypedParameterPtr params = NULL;
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int nparams = 0;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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if (!(srv = virNetDaemonGetServer(priv->dmn, args->srv.name)))
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goto cleanup;
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if (adminServerGetThreadPoolParameters(srv, ¶ms, &nparams,
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args->flags) < 0)
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goto cleanup;
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if (nparams > ADMIN_SERVER_THREADPOOL_PARAMETERS_MAX) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Number of threadpool parameters %d exceeds max "
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"allowed limit: %d"), nparams,
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ADMIN_SERVER_THREADPOOL_PARAMETERS_MAX);
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goto cleanup;
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}
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if (virTypedParamsSerialize(params, nparams,
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(virTypedParameterRemotePtr *) &ret->params.params_val,
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&ret->params.params_len, 0) < 0)
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goto cleanup;
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rv = 0;
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cleanup:
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if (rv < 0)
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virNetMessageSaveError(rerr);
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virTypedParamsFree(params, nparams);
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virObjectUnref(srv);
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return rv;
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}
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static int
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adminDispatchServerSetThreadpoolParameters(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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struct admin_server_set_threadpool_parameters_args *args)
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{
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int rv = -1;
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virNetServerPtr srv = NULL;
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virTypedParameterPtr params = NULL;
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int nparams = 0;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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if (!(srv = virNetDaemonGetServer(priv->dmn, args->srv.name))) {
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virReportError(VIR_ERR_NO_SERVER,
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_("no server with matching name '%s' found"),
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args->srv.name);
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goto cleanup;
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}
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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ADMIN_SERVER_THREADPOOL_PARAMETERS_MAX,
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¶ms,
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&nparams) < 0)
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goto cleanup;
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if (adminServerSetThreadPoolParameters(srv, params,
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nparams, args->flags) < 0)
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goto cleanup;
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rv = 0;
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cleanup:
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if (rv < 0)
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virNetMessageSaveError(rerr);
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virTypedParamsFree(params, nparams);
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virObjectUnref(srv);
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return rv;
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}
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static int
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adminDispatchClientGetInfo(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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struct admin_client_get_info_args *args,
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struct admin_client_get_info_ret *ret)
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{
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int rv = -1;
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virNetServerPtr srv = NULL;
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virNetServerClientPtr clnt = NULL;
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virTypedParameterPtr params = NULL;
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int nparams = 0;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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if (!(srv = virNetDaemonGetServer(priv->dmn, args->clnt.srv.name))) {
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virReportError(VIR_ERR_NO_SERVER,
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_("no server with matching name '%s' found"),
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args->clnt.srv.name);
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goto cleanup;
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}
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if (!(clnt = virNetServerGetClient(srv, args->clnt.id))) {
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virReportError(VIR_ERR_NO_CLIENT,
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_("no client with matching id '%llu' found"),
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(unsigned long long) args->clnt.id);
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goto cleanup;
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}
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if (adminClientGetInfo(clnt, ¶ms, &nparams, args->flags) < 0)
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goto cleanup;
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if (nparams > ADMIN_CLIENT_INFO_PARAMETERS_MAX) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Number of client info parameters %d exceeds max "
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"allowed limit: %d"), nparams,
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ADMIN_CLIENT_INFO_PARAMETERS_MAX);
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goto cleanup;
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}
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if (virTypedParamsSerialize(params, nparams,
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(virTypedParameterRemotePtr *) &ret->params.params_val,
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&ret->params.params_len,
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VIR_TYPED_PARAM_STRING_OKAY) < 0)
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goto cleanup;
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rv = 0;
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cleanup:
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if (rv < 0)
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virNetMessageSaveError(rerr);
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virTypedParamsFree(params, nparams);
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virObjectUnref(clnt);
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virObjectUnref(srv);
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return rv;
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}
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static int
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adminDispatchServerGetClientLimits(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
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admin_server_get_client_limits_args *args,
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admin_server_get_client_limits_ret *ret)
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{
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int rv = -1;
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virNetServerPtr srv = NULL;
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virTypedParameterPtr params = NULL;
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int nparams = 0;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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if (!(srv = virNetDaemonGetServer(priv->dmn, args->srv.name)))
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goto cleanup;
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if (adminServerGetClientLimits(srv, ¶ms, &nparams, args->flags) < 0)
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goto cleanup;
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if (nparams > ADMIN_SERVER_CLIENT_LIMITS_MAX) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Number of client processing parameters %d exceeds "
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"max allowed limit: %d"), nparams,
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ADMIN_SERVER_CLIENT_LIMITS_MAX);
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goto cleanup;
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}
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if (virTypedParamsSerialize(params, nparams,
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(virTypedParameterRemotePtr *) &ret->params.params_val,
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&ret->params.params_len, 0) < 0)
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goto cleanup;
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rv = 0;
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cleanup:
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if (rv < 0)
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virNetMessageSaveError(rerr);
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virTypedParamsFree(params, nparams);
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virObjectUnref(srv);
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return rv;
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}
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static int
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adminDispatchServerSetClientLimits(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr ATTRIBUTE_UNUSED,
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admin_server_set_client_limits_args *args)
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{
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int rv = -1;
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virNetServerPtr srv = NULL;
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virTypedParameterPtr params = NULL;
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int nparams = 0;
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struct daemonAdmClientPrivate *priv =
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virNetServerClientGetPrivateData(client);
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if (!(srv = virNetDaemonGetServer(priv->dmn, args->srv.name))) {
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virReportError(VIR_ERR_NO_SERVER,
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_("no server with matching name '%s' found"),
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args->srv.name);
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goto cleanup;
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}
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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ADMIN_SERVER_CLIENT_LIMITS_MAX, ¶ms, &nparams) < 0)
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goto cleanup;
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if (adminServerSetClientLimits(srv, params, nparams, args->flags) < 0)
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goto cleanup;
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rv = 0;
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cleanup:
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if (rv < 0)
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virNetMessageSaveError(rerr);
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virTypedParamsFree(params, nparams);
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virObjectUnref(srv);
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return rv;
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}
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/* Returns the number of outputs stored in @outputs */
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static int
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adminConnectGetLoggingOutputs(char **outputs, unsigned int flags)
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{
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char *tmp = NULL;
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virCheckFlags(0, -1);
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if (!(tmp = virLogGetOutputs()))
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return -1;
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*outputs = tmp;
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return virLogGetNbOutputs();
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}
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/* Returns the number of defined filters or -1 in case of an error */
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static int
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adminConnectGetLoggingFilters(char **filters, unsigned int flags)
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{
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char *tmp = NULL;
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int ret = 0;
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virCheckFlags(0, -1);
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if ((ret = virLogGetNbFilters()) > 0 && !(tmp = virLogGetFilters()))
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return -1;
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*filters = tmp;
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return ret;
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}
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static int
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adminConnectSetLoggingOutputs(virNetDaemonPtr dmn ATTRIBUTE_UNUSED,
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const char *outputs,
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unsigned int flags)
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{
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virCheckFlags(0, -1);
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return virLogSetOutputs(outputs);
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}
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static int
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adminConnectSetLoggingFilters(virNetDaemonPtr dmn ATTRIBUTE_UNUSED,
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const char *filters,
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unsigned int flags)
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{
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virCheckFlags(0, -1);
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return virLogSetFilters(filters);
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}
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static int
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adminDispatchConnectGetLoggingOutputs(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client ATTRIBUTE_UNUSED,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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admin_connect_get_logging_outputs_args *args,
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admin_connect_get_logging_outputs_ret *ret)
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{
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char *outputs = NULL;
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int noutputs = 0;
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if ((noutputs = adminConnectGetLoggingOutputs(&outputs, args->flags) < 0)) {
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virNetMessageSaveError(rerr);
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return -1;
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}
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VIR_STEAL_PTR(ret->outputs, outputs);
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ret->noutputs = noutputs;
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return 0;
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}
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static int
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adminDispatchConnectGetLoggingFilters(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client ATTRIBUTE_UNUSED,
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virNetMessagePtr msg ATTRIBUTE_UNUSED,
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virNetMessageErrorPtr rerr,
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admin_connect_get_logging_filters_args *args,
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admin_connect_get_logging_filters_ret *ret)
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{
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char *filters = NULL;
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int nfilters = 0;
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if ((nfilters = adminConnectGetLoggingFilters(&filters, args->flags)) < 0) {
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virNetMessageSaveError(rerr);
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return -1;
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}
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if (nfilters == 0) {
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ret->filters = NULL;
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} else {
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char **ret_filters = NULL;
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if (VIR_ALLOC(ret_filters) < 0)
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return -1;
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*ret_filters = filters;
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ret->filters = ret_filters;
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}
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ret->nfilters = nfilters;
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return 0;
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}
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#include "admin_dispatch.h"
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