* Returns the size of the returned payload data or a negative error code.
*/
int lttng_add_context(struct lttng_handle *handle,
- struct lttng_event_context *ctx, const char *event_name,
+ struct lttng_event_context *ctx,
+ const char *event_name __attribute__((unused)),
const char *channel_name)
{
int ret;
- size_t len = 0;
- char *buf = NULL;
- struct lttcomm_session_msg lsm;
+ struct lttcomm_session_msg lsm = { .cmd_type = LTTNG_ADD_CONTEXT };
+ struct lttng_payload payload;
+
+ lttng_payload_init(&payload);
/* Safety check. Both are mandatory. */
if (handle == NULL || ctx == NULL) {
goto end;
}
- memset(&lsm, 0, sizeof(lsm));
- lsm.cmd_type = LTTNG_ADD_CONTEXT;
+ ret = lttng_dynamic_buffer_set_size(&payload.buffer, sizeof(lsm));
+ if (ret) {
+ ret = -LTTNG_ERR_NOMEM;
+ goto end;
+ }
/* If no channel name, send empty string. */
ret = lttng_strncpy(lsm.u.context.channel_name, channel_name ?: "",
goto end;
}
- if (ctx->ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) {
- size_t provider_len, ctx_len;
- const char *provider_name = ctx->u.app_ctx.provider_name;
- const char *ctx_name = ctx->u.app_ctx.ctx_name;
+ ret = lttng_event_context_serialize(ctx, &payload);
+ if (ret) {
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
+ }
- if (!provider_name || !ctx_name) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
+ lsm.u.context.length = payload.buffer.size - sizeof(lsm);
- provider_len = strlen(provider_name);
- if (provider_len == 0) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
- lsm.u.context.provider_name_len = provider_len;
+ /* Update message header. */
+ memcpy(payload.buffer.data, &lsm, sizeof(lsm));
- ctx_len = strlen(ctx_name);
- if (ctx_len == 0) {
- ret = -LTTNG_ERR_INVALID;
- goto end;
- }
- lsm.u.context.context_name_len = ctx_len;
-
- len = provider_len + ctx_len;
- buf = (char *) zmalloc(len);
- if (!buf) {
- ret = -LTTNG_ERR_NOMEM;
+ {
+ struct lttng_payload reply;
+ struct lttng_payload_view payload_view =
+ lttng_payload_view_from_payload(&payload, 0,
+ -1);
+
+ lttng_payload_init(&reply);
+ ret = lttng_ctl_ask_sessiond_payload(&payload_view, &reply);
+ lttng_payload_reset(&reply);
+ if (ret) {
goto end;
}
-
- memcpy(buf, provider_name, provider_len);
- memcpy(buf + provider_len, ctx_name, ctx_len);
}
- memcpy(&lsm.u.context.ctx, ctx, sizeof(struct lttng_event_context));
- if (ctx->ctx == LTTNG_EVENT_CONTEXT_APP_CONTEXT) {
- /*
- * Don't leak application addresses to the sessiond.
- * This is only necessary when ctx is for an app ctx otherwise
- * the values inside the union (type & config) are overwritten.
- */
- lsm.u.context.ctx.u.app_ctx.provider_name = NULL;
- lsm.u.context.ctx.u.app_ctx.ctx_name = NULL;
- }
-
- ret = lttng_ctl_ask_sessiond_varlen_no_cmd_header(&lsm, buf, len, NULL);
end:
- free(buf);
+ lttng_payload_reset(&payload);
return ret;
}
int lttng_list_tracepoint_fields(struct lttng_handle *handle,
struct lttng_event_field **fields)
{
+ enum lttng_error_code ret_code;
int ret;
struct lttcomm_session_msg lsm;
+ const struct lttcomm_list_command_header *cmd_header = NULL;
+ unsigned int nb_event_fields = 0;
+ struct lttng_payload reply;
if (handle == NULL) {
- return -LTTNG_ERR_INVALID;
+ ret = -LTTNG_ERR_INVALID;
+ goto end;
}
+ lttng_payload_init(&reply);
+
memset(&lsm, 0, sizeof(lsm));
lsm.cmd_type = LTTNG_LIST_TRACEPOINT_FIELDS;
COPY_DOMAIN_PACKED(lsm.domain, handle->domain);
- ret = lttng_ctl_ask_sessiond(&lsm, (void **) fields);
- if (ret < 0) {
- return ret;
+ {
+ lttng_payload_view message_view =
+ lttng_payload_view_init_from_buffer(
+ (const char *) &lsm, 0,
+ sizeof(lsm));
+
+ ret = lttng_ctl_ask_sessiond_payload(&message_view, &reply);
+ if (ret < 0) {
+ goto end;
+ }
}
- return ret / sizeof(struct lttng_event_field);
+ {
+ const lttng_buffer_view cmd_header_view =
+ lttng_buffer_view_from_dynamic_buffer(
+ &reply.buffer, 0, sizeof(*cmd_header));
+
+ if (!lttng_buffer_view_is_valid(&cmd_header_view)) {
+ ret = -LTTNG_ERR_INVALID_PROTOCOL;
+ goto end;
+ }
+
+ cmd_header = (struct lttcomm_list_command_header *)
+ cmd_header_view.data;
+ }
+
+ if (cmd_header->count > INT_MAX) {
+ ret = -LTTNG_ERR_OVERFLOW;
+ goto end;
+ }
+
+ nb_event_fields = cmd_header->count;
+
+ {
+ lttng_payload_view reply_view =
+ lttng_payload_view_from_payload(&reply,
+ sizeof(*cmd_header), -1);
+
+ ret_code = lttng_event_fields_create_and_flatten_from_payload(
+ &reply_view, nb_event_fields, fields);
+ if (ret_code != LTTNG_OK) {
+ ret = -ret_code;
+ goto end;
+ }
+ }
+
+ ret = nb_event_fields;
+
+end:
+ return ret;
}
/*
(const char *) &lsm, 0, sizeof(lsm));
unsigned int nb_events = 0;
+ lttng_payload_init(&reply);
+
/* Safety check. An handle and channel name are mandatory. */
if (handle == NULL || channel_name == NULL) {
ret = -LTTNG_ERR_INVALID;
goto end;
}
- lttng_payload_init(&reply);
-
/* Initialize command parameters. */
lsm.cmd_type = LTTNG_LIST_EVENTS;
ret = lttng_strncpy(lsm.session.name, handle->session_name,
return ret;
}
-int lttng_calibrate(struct lttng_handle *handle,
- struct lttng_calibrate *calibrate)
+int lttng_calibrate(struct lttng_handle *handle __attribute__((unused)),
+ struct lttng_calibrate *calibrate __attribute__((unused)))
{
/*
* This command was removed in LTTng 2.9.
*/
extern "C"
LTTNG_EXPORT int lttng_enable_consumer(struct lttng_handle *handle);
-int lttng_enable_consumer(struct lttng_handle *handle)
+int lttng_enable_consumer(struct lttng_handle *handle __attribute__((unused)))
{
return -ENOSYS;
}
*/
extern "C"
LTTNG_EXPORT int lttng_disable_consumer(struct lttng_handle *handle);
-int lttng_disable_consumer(struct lttng_handle *handle)
+int lttng_disable_consumer(struct lttng_handle *handle __attribute__((unused)))
{
return -ENOSYS;
}
extern "C"
LTTNG_EXPORT int _lttng_create_session_ext(const char *name, const char *url,
const char *datetime);
-int _lttng_create_session_ext(const char *name, const char *url,
- const char *datetime)
+int _lttng_create_session_ext(const char *name __attribute__((unused)),
+ const char *url __attribute__((unused)),
+ const char *datetime __attribute__((unused)))
{
return -ENOSYS;
}
projects / lttng-tools.git / blobdiff