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util: Export remoteDeserializeTypedParameters internally via util
Currently, the deserializer is hardcoded into remote_driver which makes it impossible for admin to use it. One way to achieve a shared implementation (besides moving the code to another module) would be pass @ret_params_val as a void pointer as opposed to the remote_typed_param pointer and add a new extra argument specifying which of those two protocols is being used and typecast the pointer at the function entry. An example from remote_protocol: struct remote_typed_param_value { int type; union { int i; u_int ui; int64_t l; uint64_t ul; double d; int b; remote_nonnull_string s; } remote_typed_param_value_u; }; typedef struct remote_typed_param_value remote_typed_param_value; struct remote_typed_param { remote_nonnull_string field; remote_typed_param_value value; }; That would leave us with a bunch of if-then-elses that needed to be used across the method. This patch takes the other approach using the new datatype introduced in one of earlier commits.
This commit is contained in:
parent
41a459947f
commit
0472cef685
108
daemon/remote.c
108
daemon/remote.c
@ -101,12 +101,6 @@ static void make_nonnull_secret(remote_nonnull_secret *secret_dst, virSecretPtr
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static void make_nonnull_nwfilter(remote_nonnull_nwfilter *net_dst, virNWFilterPtr nwfilter_src);
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static void make_nonnull_domain_snapshot(remote_nonnull_domain_snapshot *snapshot_dst, virDomainSnapshotPtr snapshot_src);
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static virTypedParameterPtr
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remoteDeserializeTypedParameters(remote_typed_param *args_params_val,
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u_int args_params_len,
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int limit,
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int *nparams);
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static int
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remoteSerializeTypedParameters(virTypedParameterPtr params,
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int nparams,
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@ -1495,84 +1489,6 @@ remoteSerializeTypedParameters(virTypedParameterPtr params,
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return rv;
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}
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/* Helper to deserialize typed parameters. */
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static virTypedParameterPtr
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remoteDeserializeTypedParameters(remote_typed_param *args_params_val,
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u_int args_params_len,
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int limit,
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int *nparams)
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{
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size_t i = 0;
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int rv = -1;
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virTypedParameterPtr params = NULL;
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/* Check the length of the returned list carefully. */
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if (limit && args_params_len > limit) {
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virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
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goto cleanup;
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}
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if (VIR_ALLOC_N(params, args_params_len) < 0)
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goto cleanup;
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*nparams = args_params_len;
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/* Deserialise the result. */
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for (i = 0; i < args_params_len; ++i) {
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if (virStrcpyStatic(params[i].field,
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args_params_val[i].field) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Parameter %s too big for destination"),
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args_params_val[i].field);
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goto cleanup;
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}
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params[i].type = args_params_val[i].value.type;
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switch (params[i].type) {
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case VIR_TYPED_PARAM_INT:
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params[i].value.i =
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args_params_val[i].value.remote_typed_param_value_u.i;
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break;
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case VIR_TYPED_PARAM_UINT:
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params[i].value.ui =
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args_params_val[i].value.remote_typed_param_value_u.ui;
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break;
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case VIR_TYPED_PARAM_LLONG:
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params[i].value.l =
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args_params_val[i].value.remote_typed_param_value_u.l;
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break;
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case VIR_TYPED_PARAM_ULLONG:
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params[i].value.ul =
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args_params_val[i].value.remote_typed_param_value_u.ul;
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break;
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case VIR_TYPED_PARAM_DOUBLE:
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params[i].value.d =
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args_params_val[i].value.remote_typed_param_value_u.d;
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break;
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case VIR_TYPED_PARAM_BOOLEAN:
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params[i].value.b =
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args_params_val[i].value.remote_typed_param_value_u.b;
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break;
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case VIR_TYPED_PARAM_STRING:
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if (VIR_STRDUP(params[i].value.s,
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args_params_val[i].value.remote_typed_param_value_u.s) < 0)
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goto cleanup;
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break;
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default:
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virReportError(VIR_ERR_INTERNAL_ERROR, _("unknown parameter type: %d"),
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params[i].type);
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goto cleanup;
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}
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}
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rv = 0;
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cleanup:
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if (rv < 0) {
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virTypedParamsFree(params, i);
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params = NULL;
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}
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return params;
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}
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static int
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remoteDispatchDomainGetSchedulerParameters(virNetServerPtr server ATTRIBUTE_UNUSED,
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virNetServerClientPtr client ATTRIBUTE_UNUSED,
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@ -5392,9 +5308,9 @@ remoteDispatchDomainMigrateBegin3Params(virNetServerPtr server ATTRIBUTE_UNUSED,
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if (!(dom = get_nonnull_domain(priv->conn, args->dom)))
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goto cleanup;
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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if (!(xml = virDomainMigrateBegin3Params(dom, params, nparams,
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@ -5445,9 +5361,9 @@ remoteDispatchDomainMigratePrepare3Params(virNetServerPtr server ATTRIBUTE_UNUSE
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goto cleanup;
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}
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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/* Wacky world of XDR ... */
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@ -5506,9 +5422,9 @@ remoteDispatchDomainMigratePrepareTunnel3Params(virNetServerPtr server ATTRIBUTE
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goto cleanup;
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}
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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if (!(st = virStreamNew(priv->conn, VIR_STREAM_NONBLOCK)) ||
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@ -5579,9 +5495,9 @@ remoteDispatchDomainMigratePerform3Params(virNetServerPtr server ATTRIBUTE_UNUSE
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if (!(dom = get_nonnull_domain(priv->conn, args->dom)))
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goto cleanup;
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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dconnuri = args->dconnuri == NULL ? NULL : *args->dconnuri;
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@ -5636,9 +5552,9 @@ remoteDispatchDomainMigrateFinish3Params(virNetServerPtr server ATTRIBUTE_UNUSED
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goto cleanup;
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}
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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dom = virDomainMigrateFinish3Params(priv->conn, params, nparams,
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@ -5696,9 +5612,9 @@ remoteDispatchDomainMigrateConfirm3Params(virNetServerPtr server ATTRIBUTE_UNUSE
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if (!(dom = get_nonnull_domain(priv->conn, args->dom)))
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goto cleanup;
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if (!(params = remoteDeserializeTypedParameters(args->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->params.params_val,
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args->params.params_len,
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0, &nparams)))
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0, ¶ms, &nparams) < 0)
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goto cleanup;
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if (virDomainMigrateConfirm3Params(dom, params, nparams,
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@ -2350,6 +2350,7 @@ virTypedParameterTypeFromString;
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virTypedParameterTypeToString;
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virTypedParamsCheck;
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virTypedParamsCopy;
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virTypedParamsDeserialize;
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virTypedParamsFilter;
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virTypedParamsGetStringList;
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virTypedParamsReplaceString;
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@ -72,11 +72,6 @@ VIR_LOG_INIT("remote.remote_driver");
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# define HYPER_TO_ULONG(_to, _from) (_to) = (_from)
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#endif
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#define remoteDeserializeTypedParameters(ret_params_val, ret_params_len, \
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limit, params, nparams) \
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deserializeTypedParameters(__FUNCTION__, ret_params_val, ret_params_len, \
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limit, params, nparams)
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static bool inside_daemon;
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struct private_data {
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@ -1747,105 +1742,6 @@ remoteSerializeTypedParameters(virTypedParameterPtr params,
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return rv;
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}
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/* Helper to deserialize typed parameters. */
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static int
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deserializeTypedParameters(const char *funcname,
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remote_typed_param *ret_params_val,
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u_int ret_params_len,
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int limit,
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virTypedParameterPtr *params,
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int *nparams)
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{
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size_t i = 0;
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int rv = -1;
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bool userAllocated = *params != NULL;
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if (ret_params_len > limit) {
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virReportError(VIR_ERR_RPC,
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_("%s: too many parameters '%u' for limit '%d'"),
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funcname, ret_params_len, limit);
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goto cleanup;
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}
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if (userAllocated) {
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/* Check the length of the returned list carefully. */
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if (ret_params_len > *nparams) {
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virReportError(VIR_ERR_RPC,
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_("%s: too many parameters '%u' for nparams '%d'"),
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funcname, ret_params_len, *nparams);
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goto cleanup;
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}
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} else {
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if (VIR_ALLOC_N(*params, ret_params_len) < 0)
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goto cleanup;
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}
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*nparams = ret_params_len;
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/* Deserialise the result. */
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for (i = 0; i < ret_params_len; ++i) {
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virTypedParameterPtr param = *params + i;
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remote_typed_param *ret_param = ret_params_val + i;
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if (virStrcpyStatic(param->field,
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ret_param->field) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("%s: parameter %s too big for destination"),
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funcname, ret_param->field);
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goto cleanup;
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}
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param->type = ret_param->value.type;
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switch (param->type) {
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case VIR_TYPED_PARAM_INT:
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param->value.i =
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ret_param->value.remote_typed_param_value_u.i;
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break;
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case VIR_TYPED_PARAM_UINT:
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param->value.ui =
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ret_param->value.remote_typed_param_value_u.ui;
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break;
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case VIR_TYPED_PARAM_LLONG:
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param->value.l =
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ret_param->value.remote_typed_param_value_u.l;
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break;
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case VIR_TYPED_PARAM_ULLONG:
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param->value.ul =
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ret_param->value.remote_typed_param_value_u.ul;
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break;
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case VIR_TYPED_PARAM_DOUBLE:
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param->value.d =
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ret_param->value.remote_typed_param_value_u.d;
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break;
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case VIR_TYPED_PARAM_BOOLEAN:
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param->value.b =
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ret_param->value.remote_typed_param_value_u.b;
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break;
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case VIR_TYPED_PARAM_STRING:
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if (VIR_STRDUP(param->value.s,
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ret_param->value.remote_typed_param_value_u.s) < 0)
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goto cleanup;
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break;
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default:
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virReportError(VIR_ERR_RPC, _("%s: unknown parameter type: %d"),
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funcname, param->type);
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goto cleanup;
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}
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}
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rv = 0;
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cleanup:
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if (rv < 0) {
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if (userAllocated) {
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virTypedParamsClear(*params, i);
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} else {
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virTypedParamsFree(*params, i);
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*params = NULL;
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}
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}
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return rv;
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}
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static int
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remoteDeserializeDomainDiskErrors(remote_domain_disk_error *ret_errors_val,
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u_int ret_errors_len,
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@ -1922,8 +1818,8 @@ remoteDomainBlockStatsFlags(virDomainPtr domain,
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*nparams = ret.params.params_len;
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/* Deserialise the result. */
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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/* Deserialize the result. */
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX,
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¶ms,
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@ -1971,7 +1867,7 @@ remoteDomainGetMemoryParameters(virDomainPtr domain,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX,
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¶ms,
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@ -2019,7 +1915,7 @@ remoteDomainGetNumaParameters(virDomainPtr domain,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_NUMA_PARAMETERS_MAX,
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¶ms,
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@ -2067,7 +1963,7 @@ remoteDomainGetBlkioParameters(virDomainPtr domain,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_BLKIO_PARAMETERS_MAX,
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¶ms,
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@ -2991,7 +2887,7 @@ static int remoteDomainGetBlockIoTune(virDomainPtr domain,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX,
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¶ms,
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@ -3081,7 +2977,8 @@ static int remoteDomainGetCPUStats(virDomainPtr domain,
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virTypedParameterPtr cpu_params = ¶ms[cpu * nparams];
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remote_typed_param *stride = &ret.params.params_val[cpu * ret.nparams];
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if (remoteDeserializeTypedParameters(stride, ret.nparams,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) stride,
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ret.nparams,
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REMOTE_NODE_CPU_STATS_MAX,
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&cpu_params, &tmp) < 0)
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goto cleanup;
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@ -5480,7 +5377,7 @@ remoteDomainBuildEventCallbackTunable(virNetClientProgramPtr prog ATTRIBUTE_UNUS
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int nparams = 0;
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virObjectEventPtr event = NULL;
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if (remoteDeserializeTypedParameters(msg->params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) msg->params.params_val,
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msg->params.params_len,
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REMOTE_DOMAIN_EVENT_TUNABLE_MAX,
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¶ms, &nparams) < 0)
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@ -6720,7 +6617,7 @@ remoteDomainGetInterfaceParameters(virDomainPtr domain,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_INTERFACE_PARAMETERS_MAX,
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¶ms,
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@ -6900,7 +6797,7 @@ remoteNodeGetMemoryParameters(virConnectPtr conn,
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goto cleanup;
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}
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_NODE_MEMORY_PARAMETERS_MAX,
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¶ms,
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@ -7021,7 +6918,7 @@ remoteDomainGetJobStats(virDomainPtr domain,
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*type = ret.type;
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if (remoteDeserializeTypedParameters(ret.params.params_val,
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.params.params_val,
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ret.params.params_len,
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REMOTE_DOMAIN_JOB_STATS_MAX,
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params, nparams) < 0)
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@ -7802,7 +7699,7 @@ remoteConnectGetAllDomainStats(virConnectPtr conn,
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if (!(elem->dom = get_nonnull_domain(conn, rec->dom)))
|
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goto cleanup;
|
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|
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if (remoteDeserializeTypedParameters(rec->params.params_val,
|
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if (virTypedParamsDeserialize((virTypedParameterRemotePtr) rec->params.params_val,
|
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rec->params.params_len,
|
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REMOTE_CONNECT_GET_ALL_DOMAIN_STATS_MAX,
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&elem->params,
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|
@ -557,10 +557,11 @@ elsif ($mode eq "server") {
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}
|
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push(@args_list, "$1");
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push(@args_list, "n$1");
|
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push(@getters_list, " if (($1 = remoteDeserializeTypedParameters(args->$1.$1_val,\n" .
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push(@getters_list, " if (virTypedParamsDeserialize((virTypedParameterRemotePtr) args->$1.$1_val,\n" .
|
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" args->$1.$1_len,\n" .
|
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" $2,\n" .
|
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" &n$1)) == NULL)\n" .
|
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" &$1,\n" .
|
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" &n$1) < 0)\n" .
|
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" goto cleanup;\n");
|
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push(@free_list, " virTypedParamsFree($1, n$1);");
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} elsif ($args_member =~ m/<\S+>;/ or $args_member =~ m/\[\S+\];/) {
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||||
@ -1356,7 +1357,7 @@ elsif ($mode eq "client") {
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||||
}
|
||||
} elsif ($ret_member =~ m/^remote_typed_param (\S+)<(\S+)>;\s*\/\*\s*insert@(\d+)\s*\*\//) {
|
||||
splice(@args_list, int($3), 0, ("virTypedParameterPtr $1"));
|
||||
push(@ret_list2, "if (remoteDeserializeTypedParameters(ret.$1.$1_val,\n" .
|
||||
push(@ret_list2, "if (virTypedParamsDeserialize((virTypedParameterRemotePtr) ret.$1.$1_val,\n" .
|
||||
" ret.$1.$1_len,\n" .
|
||||
" $2,\n" .
|
||||
" &$1,\n" .
|
||||
|
@ -1315,3 +1315,128 @@ virTypedParamsFree(virTypedParameterPtr params,
|
||||
virTypedParamsClear(params, nparams);
|
||||
VIR_FREE(params);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* virTypedParamsDeserialize:
|
||||
* @remote_params: protocol data to be deserialized (obtained from remote side)
|
||||
* @remote_params_len: number of parameters returned in @remote_params
|
||||
* @limit: user specified maximum limit to @remote_params_len
|
||||
* @params: pointer which will hold the deserialized @remote_params data
|
||||
* @nparams: number of entries in @params
|
||||
*
|
||||
* This function will attempt to deserialize protocol-encoded data obtained
|
||||
* from remote side. Two modes of operation are supported, depending on the
|
||||
* caller's design:
|
||||
* 1) Older APIs do not rely on deserializer allocating memory for @params,
|
||||
* thus calling the deserializer twice, once to find out the actual number of
|
||||
* parameters for @params to hold, followed by an allocation of @params and
|
||||
* a second call to the deserializer to actually retrieve the data.
|
||||
* 2) Newer APIs rely completely on the deserializer to allocate the right
|
||||
* ammount of memory for @params to hold all the data obtained in
|
||||
* @remote_params.
|
||||
*
|
||||
* If used with model 1, two checks are performed, first one comparing the user
|
||||
* specified limit to the actual size of remote data and the second one
|
||||
* verifying the user allocated amount of memory is indeed capable of holding
|
||||
* remote data @remote_params.
|
||||
* With model 2, only the first check against @limit is performed.
|
||||
*
|
||||
* Returns 0 on success or -1 in case of an error.
|
||||
*/
|
||||
int
|
||||
virTypedParamsDeserialize(virTypedParameterRemotePtr remote_params,
|
||||
unsigned int remote_params_len,
|
||||
int limit,
|
||||
virTypedParameterPtr *params,
|
||||
int *nparams)
|
||||
{
|
||||
size_t i = 0;
|
||||
int rv = -1;
|
||||
bool userAllocated = *params != NULL;
|
||||
|
||||
if (limit && remote_params_len > limit) {
|
||||
virReportError(VIR_ERR_RPC,
|
||||
_("too many parameters '%u' for limit '%d'"),
|
||||
remote_params_len, limit);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
if (userAllocated) {
|
||||
/* Check the length of the returned list carefully. */
|
||||
if (remote_params_len > *nparams) {
|
||||
virReportError(VIR_ERR_RPC,
|
||||
_("too many parameters '%u' for nparams '%d'"),
|
||||
remote_params_len, *nparams);
|
||||
goto cleanup;
|
||||
}
|
||||
} else {
|
||||
if (VIR_ALLOC_N(*params, remote_params_len) < 0)
|
||||
goto cleanup;
|
||||
}
|
||||
*nparams = remote_params_len;
|
||||
|
||||
/* Deserialize the result. */
|
||||
for (i = 0; i < remote_params_len; ++i) {
|
||||
virTypedParameterPtr param = *params + i;
|
||||
virTypedParameterRemotePtr remote_param = remote_params + i;
|
||||
|
||||
if (virStrcpyStatic(param->field,
|
||||
remote_param->field) == NULL) {
|
||||
virReportError(VIR_ERR_INTERNAL_ERROR,
|
||||
_("parameter %s too big for destination"),
|
||||
remote_param->field);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
param->type = remote_param->value.type;
|
||||
switch (param->type) {
|
||||
case VIR_TYPED_PARAM_INT:
|
||||
param->value.i =
|
||||
remote_param->value.remote_typed_param_value.i;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_UINT:
|
||||
param->value.ui =
|
||||
remote_param->value.remote_typed_param_value.ui;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_LLONG:
|
||||
param->value.l =
|
||||
remote_param->value.remote_typed_param_value.l;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_ULLONG:
|
||||
param->value.ul =
|
||||
remote_param->value.remote_typed_param_value.ul;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_DOUBLE:
|
||||
param->value.d =
|
||||
remote_param->value.remote_typed_param_value.d;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_BOOLEAN:
|
||||
param->value.b =
|
||||
remote_param->value.remote_typed_param_value.b;
|
||||
break;
|
||||
case VIR_TYPED_PARAM_STRING:
|
||||
if (VIR_STRDUP(param->value.s,
|
||||
remote_param->value.remote_typed_param_value.s) < 0)
|
||||
goto cleanup;
|
||||
break;
|
||||
default:
|
||||
virReportError(VIR_ERR_RPC, _("unknown parameter type: %d"),
|
||||
param->type);
|
||||
goto cleanup;
|
||||
}
|
||||
}
|
||||
|
||||
rv = 0;
|
||||
|
||||
cleanup:
|
||||
if (rv < 0) {
|
||||
if (userAllocated) {
|
||||
virTypedParamsClear(*params, i);
|
||||
} else {
|
||||
virTypedParamsFree(*params, i);
|
||||
*params = NULL;
|
||||
}
|
||||
}
|
||||
return rv;
|
||||
}
|
||||
|
@ -104,6 +104,12 @@ int virTypedParamsCopy(virTypedParameterPtr *dst,
|
||||
|
||||
char *virTypedParameterToString(virTypedParameterPtr param);
|
||||
|
||||
int virTypedParamsDeserialize(virTypedParameterRemotePtr remote_params,
|
||||
unsigned int remote_params_len,
|
||||
int limit,
|
||||
virTypedParameterPtr *params,
|
||||
int *nparams);
|
||||
|
||||
VIR_ENUM_DECL(virTypedParameter)
|
||||
|
||||
# define VIR_TYPED_PARAMS_DEBUG(params, nparams) \
|
||||
|
Loading…
Reference in New Issue
Block a user